gemini-cli / docs /reference /configuration.md

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	# Gemini CLI configuration

	Gemini CLI offers several ways to configure its behavior, including environment
	variables, command-line arguments, and settings files. This document outlines
	the different configuration methods and available settings.

	## Configuration layers

	Configuration is applied in the following order of precedence (lower numbers are
	overridden by higher numbers):

	1. Default values: Hardcoded defaults within the application.
	2. System defaults file: System-wide default settings that can be
	overridden by other settings files.
	3. User settings file: Global settings for the current user.
	4. Project settings file: Project-specific settings.
	5. System settings file: System-wide settings that override all other
	settings files.
	6. Environment variables: System-wide or session-specific variables,
	potentially loaded from `.env` files.
	7. Command-line arguments: Values passed when launching the CLI.

	## Settings files

	Gemini CLI uses JSON settings files for persistent configuration. There are four
	locations for these files:

	<!-- prettier-ignore -->
	> [!TIP]
	> JSON-aware editors can use autocomplete and validation by pointing to
	> the generated schema at `schemas/settings.schema.json` in this repository.
	> When working outside the repo, reference the hosted schema at
	> `https://raw.githubusercontent.com/google-gemini/gemini-cli/main/schemas/settings.schema.json`.

	- System defaults file:
	- Location: `/etc/gemini-cli/system-defaults.json` (Linux),
	`C:\ProgramData\gemini-cli\system-defaults.json` (Windows) or
	`/Library/Application Support/GeminiCli/system-defaults.json` (macOS). The
	path can be overridden using the `GEMINI_CLI_SYSTEM_DEFAULTS_PATH`
	environment variable.
	- Scope: Provides a base layer of system-wide default settings. These
	settings have the lowest precedence and are intended to be overridden by
	user, project, or system override settings.
	- User settings file:
	- Location: `~/.gemini/settings.json` (where `~` is your home directory).
	- Scope: Applies to all Gemini CLI sessions for the current user. User
	settings override system defaults.
	- Project settings file:
	- Location: `.gemini/settings.json` within your project's root directory.
	- Scope: Applies only when running Gemini CLI from that specific project.
	Project settings override user settings and system defaults.
	- System settings file:
	- Location: `/etc/gemini-cli/settings.json` (Linux),
	`C:\ProgramData\gemini-cli\settings.json` (Windows) or
	`/Library/Application Support/GeminiCli/settings.json` (macOS). The path can
	be overridden using the `GEMINI_CLI_SYSTEM_SETTINGS_PATH` environment
	variable.
	- Scope: Applies to all Gemini CLI sessions on the system, for all users.
	System settings act as overrides, taking precedence over all other settings
	files. May be useful for system administrators at enterprises to have
	controls over users' Gemini CLI setups.

	Note on environment variables in settings: String values within your
	`settings.json` and `gemini-extension.json` files can reference environment
	variables using `$VAR_NAME`, `${VAR_NAME}`, or `${VAR_NAME:-DEFAULT_VALUE}`
	syntax. These variables will be automatically resolved when the settings are
	loaded. For example, if you have an environment variable `MY_API_TOKEN`, you
	could use it in `settings.json` like this: `"apiKey": "$MY_API_TOKEN"`. If you
	want to provide a fallback value, use `${MY_API_TOKEN:-default-token}`.
	Additionally, each extension can have its own `.env` file in its directory,
	which will be loaded automatically.

	Note for Enterprise Users: For guidance on deploying and managing Gemini CLI
	in a corporate environment, see the
	[Enterprise Configuration](../cli/enterprise.md) documentation.

	### The `.gemini` directory in your project

	In addition to a project settings file, a project's `.gemini` directory can
	contain other project-specific files related to Gemini CLI's operation, such as:

	- [Custom sandbox profiles](#sandboxing) (for example,
	`.gemini/sandbox-macos-custom.sb`, `.gemini/sandbox.Dockerfile`).

	### Available settings in `settings.json`

	Settings are organized into categories. All settings should be placed within
	their corresponding top-level category object in your `settings.json` file.

	<!-- SETTINGS-AUTOGEN:START -->

	#### `policyPaths`

	- `policyPaths` (array):
	- Description: Additional policy files or directories to load.
	- Default: `[]`
	- Requires restart: Yes

	#### `adminPolicyPaths`

	- `adminPolicyPaths` (array):
	- Description: Additional admin policy files or directories to load.
	- Default: `[]`
	- Requires restart: Yes

	#### `general`

	- `general.preferredEditor` (enum):

	- Description: The preferred editor to open files in. Must be one of the
	built-in supported identifiers. Use /editor in the CLI to pick
	interactively, or leave unset to use $VISUAL/$EDITOR.
	- Default: `undefined`
	- Values: `"vscode"`, `"vscodium"`, `"windsurf"`, `"cursor"`, `"zed"`,
	`"antigravity"`, `"sublimetext"`, `"lapce"`, `"nova"`, `"bbedit"`, `"vim"`,
	`"neovim"`, `"emacs"`, `"hx"`, `"emacsclient"`, `"micro"`

	- `general.openEditorInNewWindow` (boolean):

	- Description: Open VS Code-family editors in a new window when editing
	files.
	- Default: `false`

	- `general.vimMode` (boolean):

	- Description: Enable Vim keybindings
	- Default: `false`

	- `general.defaultApprovalMode` (enum):

	- Description: The default approval mode for tool execution. 'default'
	prompts for approval, 'auto_edit' auto-approves edit tools, and 'plan' is
	read-only mode. YOLO mode (auto-approve all actions) can only be enabled via
	command line (--yolo or --approval-mode=yolo).
	- Default: `"default"`
	- Values: `"default"`, `"auto_edit"`, `"plan"`

	- `general.devtools` (boolean):

	- Description: Enable DevTools inspector on launch.
	- Default: `false`

	- `general.enableAutoUpdate` (boolean):

	- Description: Enable automatic updates.
	- Default: `true`

	- `general.enableAutoUpdateNotification` (boolean):

	- Description: Enable update notification prompts.
	- Default: `true`

	- `general.enableNotifications` (boolean):

	- Description: Enable terminal run-event notifications for action-required
	prompts and session completion.
	- Default: `false`

	- `general.notificationMethod` (enum):

	- Description: How to send terminal notifications.
	- Default: `"auto"`
	- Values: `"auto"`, `"osc9"`, `"osc777"`, `"bell"`

	- `general.checkpointing.enabled` (boolean):

	- Description: Enable session checkpointing for recovery
	- Default: `false`
	- Requires restart: Yes

	- `general.plan.enabled` (boolean):

	- Description: Enable Plan Mode for read-only safety during planning.
	- Default: `true`
	- Requires restart: Yes

	- `general.plan.directory` (string):

	- Description: The directory where planning artifacts are stored. If not
	specified, defaults to the system temporary directory. A custom directory
	requires a policy to allow write access in Plan Mode.
	- Default: `undefined`
	- Requires restart: Yes

	- `general.plan.modelRouting` (boolean):

	- Description: Automatically switch between Pro and Flash models based on
	Plan Mode status. Uses Pro for the planning phase and Flash for the
	implementation phase.
	- Default: `true`

	- `general.retryFetchErrors` (boolean):

	- Description: Retry on "exception TypeError: fetch failed sending
	request" errors.
	- Default: `true`

	- `general.maxAttempts` (number):

	- Description: Maximum number of attempts for requests to the main chat
	model. Cannot exceed 10.
	- Default: `10`

	- `general.debugKeystrokeLogging` (boolean):

	- Description: Enable debug logging of keystrokes to the console.
	- Default: `false`

	- `general.sessionRetention.enabled` (boolean):

	- Description: Enable automatic session cleanup
	- Default: `true`

	- `general.sessionRetention.maxAge` (string):

	- Description: Automatically delete chats older than this time period
	(e.g., "30d", "7d", "24h", "1w")
	- Default: `"30d"`

	- `general.sessionRetention.maxCount` (number):

	- Description: Alternative: Maximum number of sessions to keep (most
	recent)
	- Default: `undefined`

	- `general.sessionRetention.minRetention` (string):

	- Description: Minimum retention period (safety limit, defaults to "1d")
	- Default: `"1d"`

	- `general.topicUpdateNarration` (boolean):

	- Description: Enable the Topic & Update communication model for reduced
	chattiness and structured progress reporting.
	- Default: `true`

	- `general.logRagSnippets` (boolean):
	- Description: Log full Code Customization (RAG) retrieved snippets to a
	local file for debugging.
	- Default: `false`

	#### `output`

	- `output.format` (enum):
	- Description: The format of the CLI output. Can be `text` or `json`.
	- Default: `"text"`
	- Values: `"text"`, `"json"`

	#### `ui`

	- `ui.debugRainbow` (boolean):

	- Description: Enable debug rainbow rendering. Only useful for debugging
	rendering bugs and performance issues.
	- Default: `false`
	- Requires restart: Yes

	- `ui.theme` (string):

	- Description: The color theme for the UI. See the CLI themes guide for
	available options.
	- Default: `undefined`

	- `ui.autoThemeSwitching` (boolean):

	- Description: Automatically switch between default light and dark themes
	based on terminal background color.
	- Default: `true`

	- `ui.terminalBackgroundPollingInterval` (number):

	- Description: Interval in seconds to poll the terminal background color.
	- Default: `60`

	- `ui.customThemes` (object):

	- Description: Custom theme definitions.
	- Default: `{}`

	- `ui.hideWindowTitle` (boolean):

	- Description: Hide the window title bar
	- Default: `false`
	- Requires restart: Yes

	- `ui.inlineThinkingMode` (enum):

	- Description: Display model thinking inline: off or full.
	- Default: `"off"`
	- Values: `"off"`, `"full"`

	- `ui.showStatusInTitle` (boolean):

	- Description: Show Gemini CLI model thoughts in the terminal window title
	during the working phase
	- Default: `false`

	- `ui.dynamicWindowTitle` (boolean):

	- Description: Update the terminal window title with current status icons
	(Ready: ◇, Action Required: ✋, Working: ✦)
	- Default: `true`

	- `ui.showHomeDirectoryWarning` (boolean):

	- Description: Show a warning when running Gemini CLI in the home
	directory.
	- Default: `true`
	- Requires restart: Yes

	- `ui.showCompatibilityWarnings` (boolean):

	- Description: Show warnings about terminal or OS compatibility issues.
	- Default: `true`
	- Requires restart: Yes

	- `ui.hideTips` (boolean):

	- Description: Hide helpful tips in the UI
	- Default: `false`

	- `ui.escapePastedAtSymbols` (boolean):

	- Description: When enabled, @ symbols in pasted text are escaped to
	prevent unintended @path expansion.
	- Default: `false`

	- `ui.showShortcutsHint` (boolean):

	- Description: Show the "? for shortcuts" hint above the input.
	- Default: `true`

	- `ui.compactToolOutput` (boolean):

	- Description: Display tool outputs (like directory listings and file
	reads) in a compact, structured format.
	- Default: `true`

	- `ui.hideBanner` (boolean):

	- Description: Hide the application banner
	- Default: `false`

	- `ui.hideContextSummary` (boolean):

	- Description: Hide the context summary (GEMINI.md, MCP servers) above the
	input.
	- Default: `false`

	- `ui.footer.items` (array):

	- Description: List of item IDs to display in the footer. Rendered in
	order
	- Default: `undefined`

	- `ui.footer.showLabels` (boolean):

	- Description: Display a second line above the footer items with
	descriptive headers (e.g., /model).
	- Default: `true`

	- `ui.footer.hideCWD` (boolean):

	- Description: Hide the current working directory in the footer.
	- Default: `false`

	- `ui.footer.hideSandboxStatus` (boolean):

	- Description: Hide the sandbox status indicator in the footer.
	- Default: `false`

	- `ui.footer.hideModelInfo` (boolean):

	- Description: Hide the model name and context usage in the footer.
	- Default: `false`

	- `ui.footer.hideContextPercentage` (boolean):

	- Description: Hides the context window usage percentage.
	- Default: `true`

	- `ui.hideFooter` (boolean):

	- Description: Hide the footer from the UI
	- Default: `false`

	- `ui.collapseDrawerDuringApproval` (boolean):

	- Description: Whether to collapse the UI drawer when a tool is awaiting
	confirmation.
	- Default: `true`

	- `ui.showMemoryUsage` (boolean):

	- Description: Display memory usage information in the UI
	- Default: `false`

	- `ui.showLineNumbers` (boolean):

	- Description: Show line numbers in the chat.
	- Default: `true`

	- `ui.showCitations` (boolean):

	- Description: Show citations for generated text in the chat.
	- Default: `false`

	- `ui.showModelInfoInChat` (boolean):

	- Description: Show the model name in the chat for each model turn.
	- Default: `false`

	- `ui.showUserIdentity` (boolean):

	- Description: Show the signed-in user's identity (e.g. email) in the UI.
	- Default: `true`

	- `ui.useAlternateBuffer` (boolean):

	- Description: Use an alternate screen buffer for the UI, preserving shell
	history.
	- Default: `false`
	- Requires restart: Yes

	- `ui.renderProcess` (boolean):

	- Description: Enable Ink render process for the UI.
	- Default: `true`
	- Requires restart: Yes

	- `ui.terminalBuffer` (boolean):

	- Description: Use the new terminal buffer architecture for rendering.
	- Default: `false`
	- Requires restart: Yes

	- `ui.useBackgroundColor` (boolean):

	- Description: Whether to use background colors in the UI.
	- Default: `true`

	- `ui.incrementalRendering` (boolean):

	- Description: Enable incremental rendering for the UI. This option will
	reduce flickering but may cause rendering artifacts. Only supported when
	useAlternateBuffer is enabled.
	- Default: `true`
	- Requires restart: Yes

	- `ui.showSpinner` (boolean):

	- Description: Show the spinner during operations.
	- Default: `true`

	- `ui.loadingPhrases` (enum):

	- Description: What to show while the model is working: tips, witty
	comments, all, or off.
	- Default: `"off"`
	- Values: `"tips"`, `"witty"`, `"all"`, `"off"`

	- `ui.errorVerbosity` (enum):

	- Description: Controls whether recoverable errors are hidden (low) or
	fully shown (full).
	- Default: `"low"`
	- Values: `"low"`, `"full"`

	- `ui.customWittyPhrases` (array):

	- Description: Custom witty phrases to display during loading. When
	provided, the CLI cycles through these instead of the defaults.
	- Default: `[]`

	- `ui.accessibility.enableLoadingPhrases` (boolean):

	- Description: @deprecated Use ui.loadingPhrases instead. Enable loading
	phrases during operations.
	- Default: `true`
	- Requires restart: Yes

	- `ui.accessibility.screenReader` (boolean):
	- Description: Render output in plain-text to be more screen reader
	accessible
	- Default: `false`
	- Requires restart: Yes

	#### `ide`

	- `ide.enabled` (boolean):

	- Description: Enable IDE integration mode.
	- Default: `false`
	- Requires restart: Yes

	- `ide.hasSeenNudge` (boolean):
	- Description: Whether the user has seen the IDE integration nudge.
	- Default: `false`

	#### `privacy`

	- `privacy.usageStatisticsEnabled` (boolean):
	- Description: Enable collection of usage statistics
	- Default: `true`
	- Requires restart: Yes

	#### `billing`

	- `billing.overageStrategy` (enum):

	- Description: How to handle quota exhaustion when AI credits are
	available. 'ask' prompts each time, 'always' automatically uses credits,
	'never' disables credit usage.
	- Default: `"ask"`
	- Values: `"ask"`, `"always"`, `"never"`

	- `billing.vertexAi.requestType` (enum):

	- Description: Sets the X-Vertex-AI-LLM-Request-Type header for Vertex AI
	requests.
	- Default: `undefined`
	- Values: `"dedicated"`, `"shared"`
	- Requires restart: Yes

	- `billing.vertexAi.sharedRequestType` (enum):
	- Description: Sets the X-Vertex-AI-LLM-Shared-Request-Type header for
	Vertex AI requests.
	- Default: `undefined`
	- Values: `"priority"`, `"flex"`
	- Requires restart: Yes

	#### `model`

	- `model.name` (string):

	- Description: The Gemini model to use for conversations.
	- Default: `undefined`

	- `model.maxSessionTurns` (number):

	- Description: Maximum number of user/model/tool turns to keep in a
	session. -1 means unlimited.
	- Default: `-1`

	- `model.summarizeToolOutput` (object):

	- Description: Enables or disables summarization of tool output. Configure
	per-tool token budgets (for example {"run_shell_command": {"tokenBudget":
	2000}}). Currently only the run_shell_command tool supports summarization.
	- Default: `undefined`

	- `model.compressionThreshold` (number):

	- Description: The fraction of context usage at which to trigger context
	compression (e.g. 0.2, 0.3).
	- Default: `0.5`
	- Requires restart: Yes

	- `model.disableLoopDetection` (boolean):

	- Description: Disable automatic detection and prevention of infinite
	loops.
	- Default: `false`
	- Requires restart: Yes

	- `model.skipNextSpeakerCheck` (boolean):
	- Description: Skip the next speaker check.
	- Default: `true`

	#### `modelConfigs`

	- `modelConfigs.aliases` (object):

	- Description: Named presets for model configs. Can be used in place of a
	model name and can inherit from other aliases using an `extends` property.
	- Default:

	```json
	{
	"base": {
	"modelConfig": {
	"generateContentConfig": {
	"temperature": 0,
	"topP": 1
	}
	}
	},
	"chat-base": {
	"extends": "base",
	"modelConfig": {
	"generateContentConfig": {
	"thinkingConfig": {
	"includeThoughts": true
	},
	"temperature": 1,
	"topP": 0.95,
	"topK": 64
	}
	}
	},
	"chat-base-2.5": {
	"extends": "chat-base",
	"modelConfig": {
	"generateContentConfig": {
	"thinkingConfig": {
	"thinkingBudget": 8192
	}
	}
	}
	},
	"chat-base-3": {
	"extends": "chat-base",
	"modelConfig": {
	"generateContentConfig": {
	"thinkingConfig": {
	"thinkingLevel": "HIGH"
	}
	}
	}
	},
	"gemini-3-pro-preview": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemini-3-pro-preview"
	}
	},
	"gemini-3-flash-preview": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemini-3-flash-preview"
	}
	},
	"gemini-3.1-pro-preview": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemini-3.1-pro-preview"
	}
	},
	"gemini-3.1-pro-preview-customtools": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemini-3.1-pro-preview-customtools"
	}
	},
	"gemini-3.1-flash-lite-preview": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemini-3.1-flash-lite-preview"
	}
	},
	"gemini-2.5-pro": {
	"extends": "chat-base-2.5",
	"modelConfig": {
	"model": "gemini-2.5-pro"
	}
	},
	"gemini-2.5-flash": {
	"extends": "chat-base-2.5",
	"modelConfig": {
	"model": "gemini-2.5-flash"
	}
	},
	"gemini-2.5-flash-lite": {
	"extends": "chat-base-2.5",
	"modelConfig": {
	"model": "gemini-2.5-flash-lite"
	}
	},
	"gemini-3.1-flash-lite": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemini-3.1-flash-lite"
	}
	},
	"gemini-3.5-flash": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemini-3.5-flash"
	}
	},
	"gemma-4-31b-it": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemma-4-31b-it"
	}
	},
	"gemma-4-26b-a4b-it": {
	"extends": "chat-base-3",
	"modelConfig": {
	"model": "gemma-4-26b-a4b-it"
	}
	},
	"gemini-2.5-flash-base": {
	"extends": "base",
	"modelConfig": {
	"model": "gemini-2.5-flash"
	}
	},
	"gemini-3-flash-base": {
	"extends": "base",
	"modelConfig": {
	"model": "gemini-3-flash-preview"
	}
	},
	"gemini-3.5-flash-base": {
	"extends": "base",
	"modelConfig": {
	"model": "gemini-3.5-flash"
	}
	},
	"classifier": {
	"extends": "base",
	"modelConfig": {
	"model": "flash-lite",
	"generateContentConfig": {
	"maxOutputTokens": 1024,
	"thinkingConfig": {
	"thinkingBudget": 512
	}
	}
	}
	},
	"prompt-completion": {
	"extends": "base",
	"modelConfig": {
	"model": "flash-lite",
	"generateContentConfig": {
	"temperature": 0.3,
	"maxOutputTokens": 16000,
	"thinkingConfig": {
	"thinkingBudget": 0
	}
	}
	}
	},
	"fast-ack-helper": {
	"extends": "base",
	"modelConfig": {
	"model": "flash-lite",
	"generateContentConfig": {
	"temperature": 0.2,
	"maxOutputTokens": 120,
	"thinkingConfig": {
	"thinkingBudget": 0
	}
	}
	}
	},
	"edit-corrector": {
	"extends": "base",
	"modelConfig": {
	"model": "flash-lite",
	"generateContentConfig": {
	"thinkingConfig": {
	"thinkingBudget": 0
	}
	}
	}
	},
	"summarizer-default": {
	"extends": "base",
	"modelConfig": {
	"model": "flash-lite",
	"generateContentConfig": {
	"maxOutputTokens": 2000
	}
	}
	},
	"summarizer-shell": {
	"extends": "base",
	"modelConfig": {
	"model": "flash-lite",
	"generateContentConfig": {
	"maxOutputTokens": 2000
	}
	}
	},
	"web-search": {
	"extends": "gemini-3-flash-base",
	"modelConfig": {
	"generateContentConfig": {
	"tools": [
	{
	"googleSearch": {}
	}
	]
	}
	}
	},
	"web-fetch": {
	"extends": "gemini-3-flash-base",
	"modelConfig": {
	"generateContentConfig": {
	"tools": [
	{
	"urlContext": {}
	}
	]
	}
	}
	},
	"web-fetch-fallback": {
	"extends": "gemini-3-flash-base",
	"modelConfig": {}
	},
	"loop-detection": {
	"extends": "gemini-3-flash-base",
	"modelConfig": {}
	},
	"loop-detection-double-check": {
	"extends": "base",
	"modelConfig": {
	"model": "gemini-3-pro-preview"
	}
	},
	"llm-edit-fixer": {
	"extends": "gemini-3-flash-base",
	"modelConfig": {}
	},
	"next-speaker-checker": {
	"extends": "gemini-3-flash-base",
	"modelConfig": {}
	},
	"context-snapshotter": {
	"extends": "gemini-3-flash-base",
	"modelConfig": {
	"generateContentConfig": {
	"thinkingConfig": {
	"thinkingLevel": "HIGH"
	},
	"temperature": 1,
	"topP": 0.95,
	"topK": 64
	}
	}
	},
	"chat-compression-3-pro": {
	"modelConfig": {
	"model": "gemini-3-pro-preview"
	}
	},
	"chat-compression-3-flash": {
	"modelConfig": {
	"model": "gemini-3-flash-preview"
	}
	},
	"chat-compression-3.1-flash-lite": {
	"modelConfig": {
	"model": "gemini-3.1-flash-lite"
	}
	},
	"chat-compression-2.5-pro": {
	"modelConfig": {
	"model": "gemini-2.5-pro"
	}
	},
	"chat-compression-2.5-flash": {
	"modelConfig": {
	"model": "gemini-2.5-flash"
	}
	},
	"chat-compression-2.5-flash-lite": {
	"modelConfig": {
	"model": "gemini-2.5-flash-lite"
	}
	},
	"chat-compression-default": {
	"modelConfig": {
	"model": "gemini-3-pro-preview"
	}
	},
	"agent-history-provider-summarizer": {
	"modelConfig": {
	"model": "gemini-3-flash-preview"
	}
	}
	}
	```

	- `modelConfigs.customAliases` (object):

	- Description: Custom named presets for model configs. These are merged
	with (and override) the built-in aliases.
	- Default: `{}`

	- `modelConfigs.customOverrides` (array):

	- Description: Custom model config overrides. These are merged with (and
	added to) the built-in overrides.
	- Default: `[]`

	- `modelConfigs.overrides` (array):

	- Description: Apply specific configuration overrides based on matches,
	with a primary key of model (or alias). The most specific match will be
	used.
	- Default: `[]`

	- `modelConfigs.modelDefinitions` (object):

	- Description: Registry of model metadata, including tier, family, and
	features.
	- Default:

	```json
	{
	"gemini-3.1-flash-lite": {
	"tier": "flash-lite",
	"family": "gemini-3",
	"isPreview": false,
	"isVisible": true,
	"features": {
	"thinking": false,
	"multimodalToolUse": true
	}
	},
	"gemini-3.1-pro-preview": {
	"tier": "pro",
	"family": "gemini-3",
	"isPreview": true,
	"isVisible": true,
	"features": {
	"thinking": true,
	"multimodalToolUse": true
	}
	},
	"gemini-3.1-pro-preview-customtools": {
	"tier": "pro",
	"family": "gemini-3",
	"isPreview": true,
	"isVisible": false,
	"features": {
	"thinking": true,
	"multimodalToolUse": true
	}
	},
	"gemini-3-pro-preview": {
	"tier": "pro",
	"family": "gemini-3",
	"isPreview": true,
	"isVisible": true,
	"features": {
	"thinking": true,
	"multimodalToolUse": true
	}
	},
	"gemini-3-flash-preview": {
	"tier": "flash",
	"family": "gemini-3",
	"isPreview": true,
	"isVisible": true,
	"features": {
	"thinking": false,
	"multimodalToolUse": true
	}
	},
	"gemini-3.5-flash": {
	"tier": "flash",
	"family": "gemini-3",
	"isPreview": false,
	"isVisible": true,
	"features": {
	"thinking": false,
	"multimodalToolUse": true
	}
	},
	"gemini-2.5-pro": {
	"tier": "pro",
	"family": "gemini-2.5",
	"isPreview": false,
	"isVisible": true,
	"features": {
	"thinking": false,
	"multimodalToolUse": false
	}
	},
	"gemini-2.5-flash": {
	"tier": "flash",
	"family": "gemini-2.5",
	"isPreview": false,
	"isVisible": true,
	"features": {
	"thinking": false,
	"multimodalToolUse": false
	}
	},
	"gemini-2.5-flash-lite": {
	"tier": "flash-lite",
	"family": "gemini-2.5",
	"isPreview": false,
	"isVisible": true,
	"features": {
	"thinking": false,
	"multimodalToolUse": false
	}
	},
	"gemma-4-31b-it": {
	"displayName": "gemma-4-31b-it",
	"tier": "custom",
	"family": "gemma-4",
	"isPreview": false,
	"isVisible": true,
	"features": {
	"thinking": true,
	"multimodalToolUse": false
	}
	},
	"gemma-4-26b-a4b-it": {
	"displayName": "gemma-4-26b-a4b-it",
	"tier": "custom",
	"family": "gemma-4",
	"isPreview": false,
	"isVisible": true,
	"features": {
	"thinking": true,
	"multimodalToolUse": false
	}
	},
	"auto": {
	"displayName": "Auto",
	"tier": "auto",
	"isPreview": true,
	"isVisible": true,
	"features": {
	"thinking": true,
	"multimodalToolUse": false
	}
	},
	"pro": {
	"tier": "pro",
	"isPreview": false,
	"isVisible": false,
	"features": {
	"thinking": true,
	"multimodalToolUse": false
	}
	},
	"flash": {
	"tier": "flash",
	"isPreview": false,
	"isVisible": false,
	"features": {
	"thinking": false,
	"multimodalToolUse": false
	}
	},
	"flash-lite": {
	"tier": "flash-lite",
	"isPreview": false,
	"isVisible": false,
	"features": {
	"thinking": false,
	"multimodalToolUse": false
	}
	},
	"auto-gemini-3": {
	"tier": "auto",
	"family": "gemini-3",
	"isPreview": true,
	"isVisible": false
	},
	"auto-gemini-2.5": {
	"tier": "auto",
	"family": "gemini-2.5",
	"isPreview": false,
	"isVisible": false
	}
	}
	```

	- Requires restart: Yes

	- `modelConfigs.modelIdResolutions` (object):

	- Description: Rules for resolving requested model names to concrete model
	IDs based on context.
	- Default:

	```json
	{
	"gemma-4-31b-it": {
	"default": "gemma-4-31b-it"
	},
	"gemma-4-26b-a4b-it": {
	"default": "gemma-4-26b-a4b-it"
	},
	"gemini-3.1-pro-preview": {
	"default": "gemini-3.1-pro-preview",
	"contexts": [
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-pro"
	},
	{
	"condition": {
	"useCustomTools": true
	},
	"target": "gemini-3.1-pro-preview-customtools"
	}
	]
	},
	"gemini-3.1-pro-preview-customtools": {
	"default": "gemini-3.1-pro-preview-customtools",
	"contexts": [
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-pro"
	}
	]
	},
	"gemini-3-flash-preview": {
	"default": "gemini-3-flash-preview",
	"contexts": [
	{
	"condition": {
	"hasAccessToPreview": false,
	"useGemini3_5Flash": true
	},
	"target": "gemini-3.5-flash"
	},
	{
	"condition": {
	"hasAccessToPreview": false,
	"useGemini3_5Flash": false
	},
	"target": "gemini-2.5-flash"
	}
	]
	},
	"gemini-3.5-flash": {
	"default": "gemini-3.5-flash",
	"contexts": [
	{
	"condition": {
	"useGemini3_5Flash": false,
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-flash"
	},
	{
	"condition": {
	"useGemini3_5Flash": false
	},
	"target": "gemini-3-flash-preview"
	}
	]
	},
	"gemini-2.5-flash": {
	"default": "gemini-2.5-flash",
	"contexts": [
	{
	"condition": {
	"useGemini3_5Flash": true
	},
	"target": "gemini-3.5-flash"
	}
	]
	},
	"gemini-3-pro-preview": {
	"default": "gemini-3-pro-preview",
	"contexts": [
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-pro"
	},
	{
	"condition": {
	"useGemini3_1": true,
	"useCustomTools": true
	},
	"target": "gemini-3.1-pro-preview-customtools"
	},
	{
	"condition": {
	"useGemini3_1": true
	},
	"target": "gemini-3.1-pro-preview"
	}
	]
	},
	"auto": {
	"default": "gemini-3-pro-preview",
	"contexts": [
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-pro"
	},
	{
	"condition": {
	"useGemini3_1": true,
	"useCustomTools": true
	},
	"target": "gemini-3.1-pro-preview-customtools"
	},
	{
	"condition": {
	"useGemini3_1": true
	},
	"target": "gemini-3.1-pro-preview"
	}
	]
	},
	"pro": {
	"default": "gemini-3-pro-preview",
	"contexts": [
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-pro"
	},
	{
	"condition": {
	"useGemini3_1": true,
	"useCustomTools": true
	},
	"target": "gemini-3.1-pro-preview-customtools"
	},
	{
	"condition": {
	"useGemini3_1": true
	},
	"target": "gemini-3.1-pro-preview"
	}
	]
	},
	"gemini-3.1-flash-lite": {
	"default": "gemini-3.1-flash-lite"
	},
	"flash": {
	"default": "gemini-3-flash-preview",
	"contexts": [
	{
	"condition": {
	"useGemini3_5Flash": true
	},
	"target": "gemini-3.5-flash"
	},
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-flash"
	}
	]
	},
	"flash-lite": {
	"default": "gemini-3.1-flash-lite"
	},
	"auto-gemini-3": {
	"default": "gemini-3-pro-preview",
	"contexts": [
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-pro"
	},
	{
	"condition": {
	"useGemini3_1": true,
	"useCustomTools": true
	},
	"target": "gemini-3.1-pro-preview-customtools"
	},
	{
	"condition": {
	"useGemini3_1": true
	},
	"target": "gemini-3.1-pro-preview"
	}
	]
	},
	"auto-gemini-2.5": {
	"default": "gemini-2.5-pro"
	}
	}
	```

	- Requires restart: Yes

	- `modelConfigs.classifierIdResolutions` (object):

	- Description: Rules for resolving classifier tiers (flash, pro) to
	concrete model IDs.
	- Default:

	```json
	{
	"flash": {
	"default": "gemini-3-flash-preview",
	"contexts": [
	{
	"condition": {
	"useGemini3_5Flash": true
	},
	"target": "gemini-3.5-flash"
	},
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-flash"
	},
	{
	"condition": {
	"requestedModels": ["gemini-2.5-pro", "auto-gemini-2.5"]
	},
	"target": "gemini-2.5-flash"
	}
	]
	},
	"pro": {
	"default": "gemini-3-pro-preview",
	"contexts": [
	{
	"condition": {
	"hasAccessToPreview": false
	},
	"target": "gemini-2.5-pro"
	},
	{
	"condition": {
	"requestedModels": ["gemini-2.5-pro", "auto-gemini-2.5"]
	},
	"target": "gemini-2.5-pro"
	},
	{
	"condition": {
	"useGemini3_1": true,
	"useCustomTools": true
	},
	"target": "gemini-3.1-pro-preview-customtools"
	},
	{
	"condition": {
	"useGemini3_1": true
	},
	"target": "gemini-3.1-pro-preview"
	}
	]
	}
	}
	```

	- Requires restart: Yes

	- `modelConfigs.modelChains` (object):

	- Description: Availability policy chains defining fallback behavior for
	models.
	- Default:

	```json
	{
	"preview": [
	{
	"model": "gemini-3-pro-preview",
	"actions": {
	"terminal": "prompt",
	"transient": "prompt",
	"not_found": "prompt",
	"unknown": "prompt"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "terminal",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	},
	{
	"model": "gemini-3-flash-preview",
	"isLastResort": true,
	"maxAttempts": 10,
	"actions": {
	"terminal": "prompt",
	"transient": "prompt",
	"not_found": "prompt",
	"unknown": "prompt"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "terminal",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	}
	],
	"auto-preview": [
	{
	"model": "gemini-3-pro-preview",
	"maxAttempts": 3,
	"actions": {
	"terminal": "prompt",
	"transient": "silent",
	"not_found": "prompt",
	"unknown": "prompt"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "sticky_retry",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	},
	{
	"model": "gemini-3-flash-preview",
	"isLastResort": true,
	"maxAttempts": 10,
	"actions": {
	"terminal": "prompt",
	"transient": "prompt",
	"not_found": "prompt",
	"unknown": "prompt"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "terminal",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	}
	],
	"default": [
	{
	"model": "gemini-2.5-pro",
	"actions": {
	"terminal": "prompt",
	"transient": "prompt",
	"not_found": "prompt",
	"unknown": "prompt"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "sticky_retry",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	},
	{
	"model": "gemini-2.5-flash",
	"isLastResort": true,
	"maxAttempts": 10,
	"actions": {
	"terminal": "prompt",
	"transient": "prompt",
	"not_found": "prompt",
	"unknown": "prompt"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "terminal",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	}
	],
	"auto-default": [
	{
	"model": "gemini-2.5-pro",
	"maxAttempts": 3,
	"actions": {
	"terminal": "prompt",
	"transient": "silent",
	"not_found": "prompt",
	"unknown": "prompt"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "sticky_retry",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	},
	{
	"model": "gemini-2.5-flash",
	"isLastResort": true,
	"maxAttempts": 10,
	"actions": {
	"terminal": "prompt",
	"transient": "prompt",
	"not_found": "prompt",
	"unknown": "prompt"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "terminal",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	}
	],
	"lite": [
	{
	"model": "flash-lite",
	"actions": {
	"terminal": "silent",
	"transient": "silent",
	"not_found": "silent",
	"unknown": "silent"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "terminal",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	},
	{
	"model": "gemini-2.5-flash",
	"actions": {
	"terminal": "silent",
	"transient": "silent",
	"not_found": "silent",
	"unknown": "silent"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "terminal",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	},
	{
	"model": "gemini-2.5-pro",
	"isLastResort": true,
	"actions": {
	"terminal": "silent",
	"transient": "silent",
	"not_found": "silent",
	"unknown": "silent"
	},
	"stateTransitions": {
	"terminal": "terminal",
	"transient": "terminal",
	"not_found": "terminal",
	"unknown": "terminal"
	}
	}
	]
	}
	```

	- Requires restart: Yes

	#### `agents`

	- `agents.overrides` (object):

	- Description: Override settings for specific agents, e.g. to disable the
	agent, set a custom model config, or run config.
	- Default: `{}`
	- Requires restart: Yes

	- `agents.browser.sessionMode` (enum):

	- Description: Session mode: 'persistent', 'isolated', or 'existing'.
	- Default: `"persistent"`
	- Values: `"persistent"`, `"isolated"`, `"existing"`
	- Requires restart: Yes

	- `agents.browser.headless` (boolean):

	- Description: Run browser in headless mode.
	- Default: `false`
	- Requires restart: Yes

	- `agents.browser.profilePath` (string):

	- Description: Path to browser profile directory for session persistence.
	- Default: `undefined`
	- Requires restart: Yes

	- `agents.browser.visualModel` (string):

	- Description: Model for the visual agent's analyze_screenshot tool. When
	set, enables the tool.
	- Default: `undefined`
	- Requires restart: Yes

	- `agents.browser.allowedDomains` (array):

	- Description: A list of allowed domains for the browser agent (e.g.,
	["github.com", "*.google.com"]).
	- Default:

	```json
	["github.com", "*.google.com", "localhost"]
	```

	- Requires restart: Yes

	- `agents.browser.disableUserInput` (boolean):

	- Description: Disable user input on browser window during automation.
	- Default: `true`

	- `agents.browser.maxActionsPerTask` (number):

	- Description: The maximum number of tool calls allowed per browser task.
	Enforcement is hard: the agent will be terminated when the limit is reached.
	- Default: `100`

	- `agents.browser.confirmSensitiveActions` (boolean):

	- Description: Require manual confirmation for sensitive browser actions
	(e.g., fill_form, evaluate_script).
	- Default: `false`
	- Requires restart: Yes

	- `agents.browser.blockFileUploads` (boolean):
	- Description: Hard-block file upload requests from the browser agent.
	- Default: `false`
	- Requires restart: Yes

	#### `context`

	- `context.fileName` (string \| string[]):

	- Description: The name of the context file or files to load into memory.
	Accepts either a single string or an array of strings.
	- Default: `undefined`

	- `context.importFormat` (string):

	- Description: The format to use when importing memory.
	- Default: `undefined`

	- `context.includeDirectoryTree` (boolean):

	- Description: Whether to include the directory tree of the current
	working directory in the initial request to the model.
	- Default: `true`

	- `context.discoveryMaxDirs` (number):

	- Description: Maximum number of directories to search for memory.
	- Default: `200`

	- `context.memoryBoundaryMarkers` (array):

	- Description: File or directory names that mark the boundary for
	GEMINI.md discovery. The upward traversal stops at the first directory
	containing any of these markers. An empty array disables parent traversal.
	- Default:

	```json
	[".git"]
	```

	- Requires restart: Yes

	- `context.includeDirectories` (array):

	- Description: Additional directories to include in the workspace context.
	Missing directories will be skipped with a warning.
	- Default: `[]`

	- `context.loadMemoryFromIncludeDirectories` (boolean):

	- Description: Controls how /memory reload loads GEMINI.md files. When
	true, include directories are scanned; when false, only the current
	directory is used.
	- Default: `false`

	- `context.fileFiltering.respectGitIgnore` (boolean):

	- Description: Respect .gitignore files when searching.
	- Default: `true`
	- Requires restart: Yes

	- `context.fileFiltering.respectGeminiIgnore` (boolean):

	- Description: Respect .geminiignore files when searching.
	- Default: `true`
	- Requires restart: Yes

	- `context.fileFiltering.enableFileWatcher` (boolean):

	- Description: Enable file watcher updates for @ file suggestions
	(experimental).
	- Default: `false`
	- Requires restart: Yes

	- `context.fileFiltering.enableRecursiveFileSearch` (boolean):

	- Description: Enable recursive file search functionality when completing
	@ references in the prompt.
	- Default: `true`
	- Requires restart: Yes

	- `context.fileFiltering.enableFuzzySearch` (boolean):

	- Description: Enable fuzzy search when searching for files.
	- Default: `true`
	- Requires restart: Yes

	- `context.fileFiltering.customIgnoreFilePaths` (array):
	- Description: Additional ignore file paths to respect. These files take
	precedence over .geminiignore and .gitignore. Files earlier in the array
	take precedence over files later in the array, e.g. the first file takes
	precedence over the second one.
	- Default: `[]`
	- Requires restart: Yes

	#### `tools`

	- `tools.sandbox` (string):

	- Description: Legacy full-process sandbox execution environment. Set to a
	boolean to enable or disable the sandbox, provide a string path to a sandbox
	profile, or specify an explicit sandbox command (e.g., "docker", "podman",
	"lxc", "windows-native").
	- Default: `undefined`
	- Requires restart: Yes

	- `tools.sandboxAllowedPaths` (array):

	- Description: List of additional paths that the sandbox is allowed to
	access.
	- Default: `[]`
	- Requires restart: Yes

	- `tools.sandboxNetworkAccess` (boolean):

	- Description: Whether the sandbox is allowed to access the network.
	- Default: `false`
	- Requires restart: Yes

	- `tools.shell.enableInteractiveShell` (boolean):

	- Description: Use node-pty for an interactive shell experience. Fallback
	to child_process still applies.
	- Default: `true`
	- Requires restart: Yes

	- `tools.shell.backgroundCompletionBehavior` (enum):

	- Description: Controls what happens when a background shell command
	finishes. 'silent' (default): quietly exits in background. 'inject':
	automatically returns output to agent. 'notify': shows brief message in
	chat.
	- Default: `"silent"`
	- Values: `"silent"`, `"inject"`, `"notify"`

	- `tools.shell.pager` (string):

	- Description: The pager command to use for shell output. Defaults to
	`cat`.
	- Default: `"cat"`

	- `tools.shell.showColor` (boolean):

	- Description: Show color in shell output.
	- Default: `true`

	- `tools.shell.inactivityTimeout` (number):

	- Description: The maximum time in seconds allowed without output from the
	shell command. Defaults to 5 minutes.
	- Default: `300`

	- `tools.shell.enableShellOutputEfficiency` (boolean):

	- Description: Enable shell output efficiency optimizations for better
	performance.
	- Default: `true`

	- `tools.core` (array):

	- Description: Restrict the set of built-in tools with an allowlist. Match
	semantics mirror tools.allowed; see the built-in tools documentation for
	available names.
	- Default: `undefined`
	- Requires restart: Yes

	- `tools.allowed` (array):

	- Description: Tool names that bypass the confirmation dialog. Useful for
	trusted commands (for example ["run_shell_command(git)",
	"run_shell_command(npm test)"]). See shell tool command restrictions for
	matching details.
	- Default: `undefined`
	- Requires restart: Yes

	- `tools.confirmationRequired` (array):

	- Description: Tool names that always require user confirmation. Takes
	precedence over allowed tools and core tool allowlists.
	- Default: `undefined`
	- Requires restart: Yes

	- `tools.exclude` (array):

	- Description: Tool names to exclude from discovery.
	- Default: `undefined`
	- Requires restart: Yes

	- `tools.discoveryCommand` (string):

	- Description: Command to run for tool discovery.
	- Default: `undefined`
	- Requires restart: Yes

	- `tools.callCommand` (string):

	- Description: Defines a custom shell command for invoking discovered
	tools. The command must take the tool name as the first argument, read JSON
	arguments from stdin, and emit JSON results on stdout.
	- Default: `undefined`
	- Requires restart: Yes

	- `tools.useRipgrep` (boolean):

	- Description: Use ripgrep for file content search instead of the fallback
	implementation. Provides faster search performance.
	- Default: `true`

	- `tools.truncateToolOutputThreshold` (number):

	- Description: Maximum characters to show when truncating large tool
	outputs. Set to 0 or negative to disable truncation.
	- Default: `40000`
	- Requires restart: Yes

	- `tools.disableLLMCorrection` (boolean):
	- Description: Disable LLM-based error correction for edit tools. When
	enabled, tools will fail immediately if exact string matches are not found,
	instead of attempting to self-correct.
	- Default: `true`
	- Requires restart: Yes

	#### `mcp`

	- `mcp.serverCommand` (string):

	- Description: Command to start an MCP server.
	- Default: `undefined`
	- Requires restart: Yes

	- `mcp.allowed` (array):

	- Description: A list of MCP servers to allow.
	- Default: `undefined`
	- Requires restart: Yes

	- `mcp.excluded` (array):
	- Description: A list of MCP servers to exclude.
	- Default: `undefined`
	- Requires restart: Yes

	#### `useWriteTodos`

	- `useWriteTodos` (boolean):
	- Description: Enable the write_todos tool.
	- Default: `true`

	#### `security`

	- `security.toolSandboxing` (boolean):

	- Description: Tool-level sandboxing. Isolates individual tools instead of
	the entire CLI process.
	- Default: `false`
	- Requires restart: Yes

	- `security.disableYoloMode` (boolean):

	- Description: Disable YOLO mode, even if enabled by a flag.
	- Default: `false`
	- Requires restart: Yes

	- `security.disableAlwaysAllow` (boolean):

	- Description: Disable "Always allow" options in tool confirmation
	dialogs.
	- Default: `false`
	- Requires restart: Yes

	- `security.enablePermanentToolApproval` (boolean):

	- Description: Enable the "Allow for all future sessions" option in tool
	confirmation dialogs.
	- Default: `false`

	- `security.autoAddToPolicyByDefault` (boolean):

	- Description: When enabled, the "Allow for all future sessions" option
	becomes the default choice for low-risk tools in trusted workspaces.
	- Default: `false`

	- `security.blockGitExtensions` (boolean):

	- Description: Blocks installing and loading extensions from Git.
	- Default: `false`
	- Requires restart: Yes

	- `security.allowedExtensions` (array):

	- Description: List of Regex patterns for allowed extensions. If nonempty,
	only extensions that match the patterns in this list are allowed. Overrides
	the blockGitExtensions setting.
	- Default: `[]`
	- Requires restart: Yes

	- `security.folderTrust.enabled` (boolean):

	- Description: Setting to track whether Folder trust is enabled.
	- Default: `true`
	- Requires restart: Yes

	- `security.environmentVariableRedaction.allowed` (array):

	- Description: Environment variables to always allow (bypass redaction).
	- Default: `[]`
	- Requires restart: Yes

	- `security.environmentVariableRedaction.blocked` (array):

	- Description: Environment variables to always redact.
	- Default: `[]`
	- Requires restart: Yes

	- `security.environmentVariableRedaction.enabled` (boolean):

	- Description: Enable redaction of environment variables that may contain
	secrets.
	- Default: `false`
	- Requires restart: Yes

	- `security.auth.selectedType` (string):

	- Description: The currently selected authentication type.
	- Default: `undefined`
	- Requires restart: Yes

	- `security.auth.enforcedType` (string):

	- Description: The required auth type. If this does not match the selected
	auth type, the user will be prompted to re-authenticate.
	- Default: `undefined`
	- Requires restart: Yes

	- `security.auth.useExternal` (boolean):

	- Description: Whether to use an external authentication flow.
	- Default: `undefined`
	- Requires restart: Yes

	- `security.enableConseca` (boolean):
	- Description: Enable the context-aware security checker. This feature
	uses an LLM to dynamically generate and enforce security policies for tool
	use based on your prompt, providing an additional layer of protection
	against unintended actions.
	- Default: `false`
	- Requires restart: Yes

	#### `advanced`

	- `advanced.autoConfigureMemory` (boolean):

	- Description: Automatically configure Node.js memory limits. Note:
	Because memory is allocated during the initial process boot, this setting is
	only read from the global user settings file and ignores workspace-level
	overrides.
	- Default: `true`
	- Requires restart: Yes

	- `advanced.dnsResolutionOrder` (string):

	- Description: The DNS resolution order.
	- Default: `undefined`
	- Requires restart: Yes

	- `advanced.excludedEnvVars` (array):

	- Description: Environment variables to exclude from project context.
	- Default:

	```json
	["DEBUG", "DEBUG_MODE"]
	```

	- `advanced.ignoreLocalEnv` (boolean):

	- Description: Whether to ignore generic .env files in the project
	directory.
	- Default: `false`
	- Requires restart: Yes

	- `advanced.bugCommand` (object):
	- Description: Configuration for the bug report command.
	- Default: `undefined`

	#### `experimental`

	- `experimental.gemma` (boolean):

	- Description: Enable access to Gemma 4 models via Gemini API.
	- Default: `true`
	- Requires restart: Yes

	- `experimental.voiceMode` (boolean):

	- Description: Enable experimental voice dictation and commands (/voice,
	/voice model).
	- Default: `false`

	- `experimental.voice.activationMode` (enum):

	- Description: How to trigger voice recording with the Space key.
	- Default: `"push-to-talk"`
	- Values: `"push-to-talk"`, `"toggle"`

	- `experimental.voice.backend` (enum):

	- Description: The backend to use for voice transcription. Note: When
	using the Gemini Live backend, voice recordings are sent to Google Cloud for
	transcription.
	- Default: `"gemini-live"`
	- Values: `"gemini-live"`, `"whisper"`

	- `experimental.voice.whisperModel` (enum):

	- Description: The Whisper model to use for local transcription.
	- Default: `"ggml-base.en.bin"`
	- Values: `"ggml-tiny.en.bin"`, `"ggml-base.en.bin"`,
	`"ggml-large-v3-turbo-q5_0.bin"`, `"ggml-large-v3-turbo-q8_0.bin"`

	- `experimental.voice.stopGracePeriodMs` (number):

	- Description: How long to wait for final transcription after stopping
	recording.
	- Default: `4000`

	- `experimental.adk.agentSessionNoninteractiveEnabled` (boolean):

	- Description: Enable non-interactive agent sessions.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.adk.agentSessionInteractiveEnabled` (boolean):

	- Description: Enable the agent session implementation for the interactive
	CLI.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.adk.agentSessionSubagentEnabled` (boolean):

	- Description: Route subagent invocations through the AgentSession
	protocol instead of legacy executors.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.enableAgents` (boolean):

	- Description: Enable local and remote subagents.
	- Default: `true`
	- Requires restart: Yes

	- `experimental.worktrees` (boolean):

	- Description: Enable automated Git worktree management for parallel work.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.extensionManagement` (boolean):

	- Description: Enable extension management features.
	- Default: `true`
	- Requires restart: Yes

	- `experimental.extensionConfig` (boolean):

	- Description: Enable requesting and fetching of extension settings.
	- Default: `true`
	- Requires restart: Yes

	- `experimental.extensionRegistry` (boolean):

	- Description: Enable extension registry explore UI.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.extensionRegistryURI` (string):

	- Description: The URI (web URL or local file path) of the extension
	registry.
	- Default: `"https://geminicli.com/extensions.json"`
	- Requires restart: Yes

	- `experimental.extensionReloading` (boolean):

	- Description: Enables extension loading/unloading within the CLI session.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.useOSC52Paste` (boolean):

	- Description: Use OSC 52 for pasting. This may be more robust than the
	default system when using remote terminal sessions (if your terminal is
	configured to allow it).
	- Default: `false`

	- `experimental.useOSC52Copy` (boolean):

	- Description: Use OSC 52 for copying. This may be more robust than the
	default system when using remote terminal sessions (if your terminal is
	configured to allow it).
	- Default: `false`

	- `experimental.taskTracker` (boolean):

	- Description: Enable task tracker tools.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.modelSteering` (boolean):

	- Description: Enable model steering (user hints) to guide the model
	during tool execution.
	- Default: `false`

	- `experimental.directWebFetch` (boolean):

	- Description: Enable web fetch behavior that bypasses LLM summarization.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.dynamicModelConfiguration` (boolean):

	- Description: Enable dynamic model configuration (definitions,
	resolutions, and chains) via settings.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.gemmaModelRouter.enabled` (boolean):

	- Description: Enable the Gemma Model Router (experimental). Requires a
	local endpoint serving Gemma via the Gemini API using LiteRT-LM shim.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.gemmaModelRouter.autoStartServer` (boolean):

	- Description: Automatically start the LiteRT-LM server when Gemini CLI
	starts and the Gemma router is enabled.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.gemmaModelRouter.binaryPath` (string):

	- Description: Custom path to the LiteRT-LM binary. Leave empty to use the
	default location (~/.gemini/bin/litert/).
	- Default: `""`
	- Requires restart: Yes

	- `experimental.gemmaModelRouter.classifier.host` (string):

	- Description: The host of the classifier.
	- Default: `"http://localhost:9379"`
	- Requires restart: Yes

	- `experimental.gemmaModelRouter.classifier.model` (string):

	- Description: The model to use for the classifier. Only tested on
	`gemma3-1b-gpu-custom`.
	- Default: `"gemma3-1b-gpu-custom"`
	- Requires restart: Yes

	- `experimental.stressTestProfile` (boolean):

	- Description: Significantly lowers token limits to force early garbage
	collection and distillation for testing purposes.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.autoMemory` (boolean):

	- Description: Automatically extract memory patches and skills from past
	sessions in the background. Every change is written as a unified diff
	`.patch` file under `<projectMemoryDir>/.inbox/<kind>/` and held for review
	in /memory inbox; nothing is applied until you approve it.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.generalistProfile` (boolean):

	- Description: Suitable for general coding and software development tasks.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.powerUserProfile` (boolean):

	- Description: Less cache friendly version of the generalist profile.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.contextManagement` (boolean):

	- Description: Enable logic for context management.
	- Default: `false`
	- Requires restart: Yes

	- `experimental.topicUpdateNarration` (boolean):
	- Description: Deprecated: Use general.topicUpdateNarration instead.
	- Default: `false`

	#### `skills`

	- `skills.enabled` (boolean):

	- Description: Enable Agent Skills.
	- Default: `true`
	- Requires restart: Yes

	- `skills.disabled` (array):
	- Description: List of disabled skills.
	- Default: `[]`
	- Requires restart: Yes

	#### `hooksConfig`

	- `hooksConfig.enabled` (boolean):

	- Description: Canonical toggle for the hooks system. When disabled, no
	hooks will be executed.
	- Default: `true`
	- Requires restart: Yes

	- `hooksConfig.disabled` (array):

	- Description: List of hook names (commands) that should be disabled.
	Hooks in this list will not execute even if configured.
	- Default: `[]`

	- `hooksConfig.notifications` (boolean):
	- Description: Show visual indicators when hooks are executing.
	- Default: `true`

	#### `hooks`

	- `hooks.BeforeTool` (array):

	- Description: Hooks that execute before tool execution. Can intercept,
	validate, or modify tool calls.
	- Default: `[]`

	- `hooks.AfterTool` (array):

	- Description: Hooks that execute after tool execution. Can process
	results, log outputs, or trigger follow-up actions.
	- Default: `[]`

	- `hooks.BeforeAgent` (array):

	- Description: Hooks that execute before agent loop starts. Can set up
	context or initialize resources.
	- Default: `[]`

	- `hooks.AfterAgent` (array):

	- Description: Hooks that execute after agent loop completes. Can perform
	cleanup or summarize results.
	- Default: `[]`

	- `hooks.Notification` (array):

	- Description: Hooks that execute on notification events (errors,
	warnings, info). Can log or alert on specific conditions.
	- Default: `[]`

	- `hooks.SessionStart` (array):

	- Description: Hooks that execute when a session starts. Can initialize
	session-specific resources or state.
	- Default: `[]`

	- `hooks.SessionEnd` (array):

	- Description: Hooks that execute when a session ends. Can perform cleanup
	or persist session data.
	- Default: `[]`

	- `hooks.PreCompress` (array):

	- Description: Hooks that execute before chat history compression. Can
	back up or analyze conversation before compression.
	- Default: `[]`

	- `hooks.BeforeModel` (array):

	- Description: Hooks that execute before LLM requests. Can modify prompts,
	inject context, or control model parameters.
	- Default: `[]`

	- `hooks.AfterModel` (array):

	- Description: Hooks that execute after LLM responses. Can process
	outputs, extract information, or log interactions.
	- Default: `[]`

	- `hooks.BeforeToolSelection` (array):
	- Description: Hooks that execute before tool selection. Can filter or
	prioritize available tools dynamically.
	- Default: `[]`

	#### `contextManagement`

	- `contextManagement.historyWindow.maxTokens` (number):

	- Description: The number of tokens to allow before triggering
	compression.
	- Default: `150000`
	- Requires restart: Yes

	- `contextManagement.historyWindow.retainedTokens` (number):

	- Description: The number of tokens to always retain.
	- Default: `40000`
	- Requires restart: Yes

	- `contextManagement.messageLimits.normalMaxTokens` (number):

	- Description: The target number of tokens to budget for a normal
	conversation turn.
	- Default: `2500`
	- Requires restart: Yes

	- `contextManagement.messageLimits.retainedMaxTokens` (number):

	- Description: The maximum number of tokens a single conversation turn can
	consume before truncation.
	- Default: `12000`
	- Requires restart: Yes

	- `contextManagement.messageLimits.normalizationHeadRatio` (number):

	- Description: The ratio of tokens to retain from the beginning of a
	truncated message (0.0 to 1.0).
	- Default: `0.25`
	- Requires restart: Yes

	- `contextManagement.tools.distillation.maxOutputTokens` (number):

	- Description: Maximum tokens to show to the model when truncating large
	tool outputs.
	- Default: `10000`
	- Requires restart: Yes

	- `contextManagement.tools.distillation.summarizationThresholdTokens`
	(number):

	- Description: Threshold above which truncated tool outputs will be
	summarized by an LLM.
	- Default: `20000`
	- Requires restart: Yes

	- `contextManagement.tools.outputMasking.protectionThresholdTokens`
	(number):

	- Description: Minimum number of tokens to protect from masking (most
	recent tool outputs).
	- Default: `50000`
	- Requires restart: Yes

	- `contextManagement.tools.outputMasking.minPrunableThresholdTokens`
	(number):

	- Description: Minimum prunable tokens required to trigger a masking pass.
	- Default: `30000`
	- Requires restart: Yes

	- `contextManagement.tools.outputMasking.protectLatestTurn` (boolean):
	- Description: Ensures the absolute latest turn is never masked,
	regardless of token count.
	- Default: `true`
	- Requires restart: Yes

	#### `admin`

	- `admin.secureModeEnabled` (boolean):

	- Description: If true, disallows YOLO mode and "Always allow" options
	from being used.
	- Default: `false`

	- `admin.extensions.enabled` (boolean):

	- Description: If false, disallows extensions from being installed or
	used.
	- Default: `true`

	- `admin.mcp.enabled` (boolean):

	- Description: If false, disallows MCP servers from being used.
	- Default: `true`

	- `admin.mcp.config` (object):

	- Description: Admin-configured MCP servers (allowlist).
	- Default: `{}`

	- `admin.mcp.requiredConfig` (object):

	- Description: Admin-required MCP servers that are always injected.
	- Default: `{}`

	- `admin.skills.enabled` (boolean):
	- Description: If false, disallows agent skills from being used.
	- Default: `true`
	<!-- SETTINGS-AUTOGEN:END -->

	#### `mcpServers`

	Configures connections to one or more Model-Context Protocol (MCP) servers for
	discovering and using custom tools. Gemini CLI attempts to connect to each
	configured MCP server to discover available tools. Every discovered tool is
	prepended with the `mcp_` prefix and its server alias to form a fully qualified
	name (FQN) (for example, `mcp_serverAlias_actualToolName`) to avoid conflicts.
	Note that the system might strip certain schema properties from MCP tool
	definitions for compatibility. At least one of `command`, `url`, or `httpUrl`
	must be provided. If multiple are specified, the order of precedence is
	`httpUrl`, then `url`, then `command`.

	<!-- prettier-ignore -->
	> [!WARNING]
	> Avoid using underscores (`_`) in your server aliases (for example, use
	> `my-server` instead of `my_server`). The underlying policy engine parses Fully
	> Qualified Names (`mcp_server_tool`) using the first underscore after the
	> `mcp_` prefix. An underscore in your server alias will cause the parser to
	> misidentify the server name, which can cause security policies to fail
	> silently.

	- `mcpServers.<SERVER_NAME>` (object): The server parameters for the named
	server.
	- `command` (string, optional): The command to execute to start the MCP server
	via standard I/O.
	- `args` (array of strings, optional): Arguments to pass to the command.
	- `env` (object, optional): Environment variables to set for the server
	process.
	- `cwd` (string, optional): The working directory in which to start the
	server.
	- `url` (string, optional): The URL of an MCP server that uses Server-Sent
	Events (SSE) for communication.
	- `httpUrl` (string, optional): The URL of an MCP server that uses streamable
	HTTP for communication.
	- `headers` (object, optional): A map of HTTP headers to send with requests to
	`url` or `httpUrl`.
	- `timeout` (number, optional): Timeout in milliseconds for requests to this
	MCP server.
	- `trust` (boolean, optional): Trust this server and bypass all tool call
	confirmations.
	- `description` (string, optional): A brief description of the server, which
	may be used for display purposes.
	- `includeTools` (array of strings, optional): List of tool names to include
	from this MCP server. When specified, only the tools listed here will be
	available from this server (allowlist behavior). If not specified, all tools
	from the server are enabled by default.
	- `excludeTools` (array of strings, optional): List of tool names to exclude
	from this MCP server. Tools listed here will not be available to the model,
	even if they are exposed by the server. Note: `excludeTools` takes
	precedence over `includeTools` - if a tool is in both lists, it will be
	excluded.

	#### `telemetry`

	Configures logging and metrics collection for Gemini CLI. For more information,
	see [Telemetry](../cli/telemetry.md).

	- Properties:
	- `enabled` (boolean): Whether or not telemetry is enabled.
	- `traces` (boolean): Whether detailed traces with large attributes (like
	tool outputs and file reads) are captured. Defaults to `false`.
	- `target` (string): The destination for collected telemetry. Supported
	values are `local` and `gcp`.
	- `otlpEndpoint` (string): The endpoint for the OTLP Exporter.
	- `otlpProtocol` (string): The protocol for the OTLP Exporter (`grpc` or
	`http`).
	- `logPrompts` (boolean): Whether or not to include the content of user
	prompts in the logs.
	- `outfile` (string): The file to write telemetry to when `target` is
	`local`.
	- `useCollector` (boolean): Whether to use an external OTLP collector.

	### Example `settings.json`

	Here is an example of a `settings.json` file with the nested structure, new as
	of v0.3.0:

	```json
	{
	"general": {
	"vimMode": true,
	"preferredEditor": "code",
	"sessionRetention": {
	"enabled": true,
	"maxAge": "30d",
	"maxCount": 100
	}
	},
	"ui": {
	"theme": "GitHub",
	"hideBanner": true,
	"hideTips": false,
	"customWittyPhrases": [
	"You forget a thousand things every day. Make sure this is one of ’em",
	"Connecting to AGI"
	]
	},
	"tools": {
	"sandbox": "docker",
	"discoveryCommand": "bin/get_tools",
	"callCommand": "bin/call_tool",
	"exclude": ["write_file"]
	},
	"mcpServers": {
	"mainServer": {
	"command": "bin/mcp_server.py"
	},
	"anotherServer": {
	"command": "node",
	"args": ["mcp_server.js", "--verbose"]
	}
	},
	"telemetry": {
	"enabled": true,
	"target": "local",
	"otlpEndpoint": "http://localhost:4317",
	"logPrompts": true
	},
	"privacy": {
	"usageStatisticsEnabled": true
	},
	"model": {
	"name": "gemini-1.5-pro-latest",
	"maxSessionTurns": 10,
	"summarizeToolOutput": {
	"run_shell_command": {
	"tokenBudget": 100
	}
	}
	},
	"context": {
	"fileName": ["CONTEXT.md", "GEMINI.md"],
	"includeDirectories": ["path/to/dir1", "~/path/to/dir2", "../path/to/dir3"],
	"loadFromIncludeDirectories": true,
	"fileFiltering": {
	"respectGitIgnore": false
	}
	},
	"advanced": {
	"excludedEnvVars": ["DEBUG", "DEBUG_MODE", "NODE_ENV"]
	}
	}
	```

	## Shell history

	The CLI keeps a history of shell commands you run. To avoid conflicts between
	different projects, this history is stored in a project-specific directory
	within your user's home folder.

	- Location: `~/.gemini/tmp/<project_hash>/shell_history`
	- `<project_hash>` is a unique identifier generated from your project's root
	path.
	- The history is stored in a file named `shell_history`.

	## Environment variables and `.env` files

	Environment variables are a common way to configure applications, especially for
	sensitive information like API keys or for settings that might change between
	environments. For authentication setup, see the
	[Authentication documentation](../get-started/authentication.mdx) which covers
	all available authentication methods.

	The CLI automatically loads environment variables from an `.env` file. The
	loading order is:

	1. `.env` file in the current working directory.
	2. If not found, it searches upwards in parent directories until it finds an
	`.env` file or reaches the project root (identified by a `.git` folder) or
	the home directory.
	3. If still not found, it looks for `~/.env` (in the user's home directory).

	Environment variable exclusion: Some environment variables (like `DEBUG` and
	`DEBUG_MODE`) are automatically excluded from being loaded from project `.env`
	files to prevent interference with gemini-cli behavior. Variables from
	`.gemini/.env` files are never excluded. You can customize this behavior using
	the `advanced.excludedEnvVars` setting in your `settings.json` file.

	- `GEMINI_API_KEY`:
	- Your API key for the Gemini API.
	- One of several available
	[authentication methods](../get-started/authentication.mdx).
	- Set this in your shell profile (for example, `~/.bashrc`, `~/.zshrc`) or an
	`.env` file.
	- `GEMINI_MODEL`:
	- Specifies the default Gemini model to use.
	- Overrides the hardcoded default
	- Example: `export GEMINI_MODEL="gemini-3-flash-preview"` (Windows PowerShell:
	`$env:GEMINI_MODEL="gemini-3-flash-preview"`)
	- `GEMINI_CLI_TRUST_WORKSPACE`:
	- If set to `"true"`, trusts the current workspace for the duration of the
	session, bypassing the folder trust check.
	- Useful for headless environments (for example, CI/CD pipelines).
	- `GEMINI_CLI_TRUSTED_FOLDERS_PATH`:
	- Overrides the default location for the `trustedFolders.json` file.
	- Useful if you want to store this configuration in a custom location instead
	of the default `~/.gemini/`.
	- `GEMINI_CLI_IDE_PID`:
	- Manually specifies the PID of the IDE process to use for integration. This
	is useful when running Gemini CLI in a standalone terminal while still
	wanting to associate it with a specific IDE instance.
	- Overrides the automatic IDE detection logic.
	- `GEMINI_CLI_HOME`:
	- Specifies the root directory for Gemini CLI's user-level configuration and
	storage.
	- By default, this is the user's system home directory. The CLI will create a
	`.gemini` folder inside this directory.
	- Useful for shared compute environments or keeping CLI state isolated.
	- Example: `export GEMINI_CLI_HOME="/path/to/user/config"` (Windows
	PowerShell: `$env:GEMINI_CLI_HOME="C:\path\to\user\config"`)
	- `GEMINI_CLI_SURFACE`:
	- Specifies a custom label to include in the `User-Agent` header for API
	traffic reporting.
	- This is useful for tracking specific internal tools or distribution
	channels.
	- Example: `export GEMINI_CLI_SURFACE="my-custom-tool"` (Windows PowerShell:
	`$env:GEMINI_CLI_SURFACE="my-custom-tool"`)
	- `GOOGLE_API_KEY`:
	- Your Google Cloud API key.
	- Required for using Vertex AI in express mode.
	- Ensure you have the necessary permissions.
	- Example: `export GOOGLE_API_KEY="YOUR_GOOGLE_API_KEY"` (Windows PowerShell:
	`$env:GOOGLE_API_KEY="YOUR_GOOGLE_API_KEY"`).
	- `GOOGLE_CLOUD_PROJECT`:
	- Your Google Cloud Project ID.
	- Required for using Code Assist or Vertex AI.
	- If using Vertex AI, ensure you have the necessary permissions in this
	project.
	- Cloud Shell note: When running in a Cloud Shell environment, this
	variable defaults to a special project allocated for Cloud Shell users. If
	you have `GOOGLE_CLOUD_PROJECT` set in your global environment in Cloud
	Shell, it will be overridden by this default. To use a different project in
	Cloud Shell, you must define `GOOGLE_CLOUD_PROJECT` in a `.env` file.
	- Example: `export GOOGLE_CLOUD_PROJECT="YOUR_PROJECT_ID"` (Windows
	PowerShell: `$env:GOOGLE_CLOUD_PROJECT="YOUR_PROJECT_ID"`).
	- `GOOGLE_APPLICATION_CREDENTIALS` (string):
	- Description: The path to your Google Application Credentials JSON file.
	- Example:
	`export GOOGLE_APPLICATION_CREDENTIALS="/path/to/your/credentials.json"`
	(Windows PowerShell:
	`$env:GOOGLE_APPLICATION_CREDENTIALS="C:\path\to\your\credentials.json"`)
	- `GOOGLE_GENAI_API_VERSION`:
	- Specifies the API version to use for Gemini API requests.
	- When set, overrides the default API version used by the SDK.
	- Example: `export GOOGLE_GENAI_API_VERSION="v1"` (Windows PowerShell:
	`$env:GOOGLE_GENAI_API_VERSION="v1"`)
	- `GOOGLE_GEMINI_BASE_URL`:
	- Overrides the default base URL for Gemini API requests (when using
	`gemini-api-key` authentication).
	- Must be a valid URL. For security, it must use HTTPS unless pointing to
	`localhost` (or `127.0.0.1` / `[::1]`).
	- Example: `export GOOGLE_GEMINI_BASE_URL="https://my-proxy.com"` (Windows
	PowerShell: `$env:GOOGLE_GEMINI_BASE_URL="https://my-proxy.com"`)
	- `GOOGLE_VERTEX_BASE_URL`:
	- Overrides the default base URL for Vertex AI API requests (when using
	`vertex-ai` authentication).
	- Must be a valid URL. For security, it must use HTTPS unless pointing to
	`localhost` (or `127.0.0.1` / `[::1]`).
	- Example: `export GOOGLE_VERTEX_BASE_URL="https://my-vertex-proxy.com"`
	(Windows PowerShell:
	`$env:GOOGLE_VERTEX_BASE_URL="https://my-vertex-proxy.com"`)
	- `OTLP_GOOGLE_CLOUD_PROJECT`:
	- Your Google Cloud Project ID for Telemetry in Google Cloud
	- Example: `export OTLP_GOOGLE_CLOUD_PROJECT="YOUR_PROJECT_ID"` (Windows
	PowerShell: `$env:OTLP_GOOGLE_CLOUD_PROJECT="YOUR_PROJECT_ID"`).
	- `GEMINI_TELEMETRY_ENABLED`:
	- Set to `true` or `1` to enable telemetry. Any other value is treated as
	disabling it.
	- Overrides the `telemetry.enabled` setting.
	- `GEMINI_TELEMETRY_TRACES_ENABLED`:
	- Set to `true` or `1` to enable detailed tracing with large attributes. Any
	other value is treated as disabling it.
	- Overrides the `telemetry.traces` setting.
	- `GEMINI_TELEMETRY_TARGET`:
	- Sets the telemetry target (`local` or `gcp`).
	- Overrides the `telemetry.target` setting.
	- `GEMINI_TELEMETRY_OTLP_ENDPOINT`:
	- Sets the OTLP endpoint for telemetry.
	- Overrides the `telemetry.otlpEndpoint` setting.
	- `GEMINI_TELEMETRY_OTLP_PROTOCOL`:
	- Sets the OTLP protocol (`grpc` or `http`).
	- Overrides the `telemetry.otlpProtocol` setting.
	- `GEMINI_TELEMETRY_LOG_PROMPTS`:
	- Set to `true` or `1` to enable or disable logging of user prompts. Any other
	value is treated as disabling it.
	- Overrides the `telemetry.logPrompts` setting.
	- `GEMINI_TELEMETRY_OUTFILE`:
	- Sets the file path to write telemetry to when the target is `local`.
	- Overrides the `telemetry.outfile` setting.
	- `GEMINI_TELEMETRY_USE_COLLECTOR`:
	- Set to `true` or `1` to enable or disable using an external OTLP collector.
	Any other value is treated as disabling it.
	- Overrides the `telemetry.useCollector` setting.
	- `GOOGLE_CLOUD_LOCATION`:
	- Your Google Cloud Project Location (for example, us-central1).
	- Required for using Vertex AI in non-express mode.
	- Example: `export GOOGLE_CLOUD_LOCATION="YOUR_PROJECT_LOCATION"` (Windows
	PowerShell: `$env:GOOGLE_CLOUD_LOCATION="YOUR_PROJECT_LOCATION"`).
	- `GEMINI_SANDBOX`:
	- Alternative to the `sandbox` setting in `settings.json`.
	- Accepts `true`, `false`, `docker`, `podman`, or a custom command string.
	- `GEMINI_SYSTEM_MD`:
	- Replaces the built‑in system prompt with content from a Markdown file.
	- `true`/`1`: Use project default path `./.gemini/system.md`.
	- Any other string: Treat as a path (relative/absolute supported, `~`
	expands).
	- `false`/`0` or unset: Use the built‑in prompt. See
	[System Prompt Override](../cli/system-prompt.md).
	- `GEMINI_WRITE_SYSTEM_MD`:
	- Writes the current built‑in system prompt to a file for review.
	- `true`/`1`: Write to `./.gemini/system.md`. Otherwise treat the value as a
	path.
	- Run the CLI once with this set to generate the file.
	- `SEATBELT_PROFILE` (macOS specific):
	- Switches the Seatbelt (`sandbox-exec`) profile on macOS.
	- `permissive-open`: (Default) Denies operations by default, confining writes
	to the project folder (and a few other folders, see
	`packages/cli/src/utils/sandbox-macos-permissive-open.sb`) while allowing
	broad file reads and network access.
	- `restrictive-open`: Declines operations by default, allows network.
	- `strict-open`: Restricts both reads and writes to the working directory,
	allows network.
	- `strict-proxied`: Same as `strict-open` but routes network through proxy.
	- `<profile_name>`: Uses a custom profile. To define a custom profile, create
	a file named `sandbox-macos-<profile_name>.sb` in your project's `.gemini/`
	directory (for example, `my-project/.gemini/sandbox-macos-custom.sb`).
	- `DEBUG` or `DEBUG_MODE` (often used by underlying libraries or the CLI
	itself):
	- Set to `true` or `1` to enable verbose debug logging, which can be helpful
	for troubleshooting.
	- Note: These variables are automatically excluded from project `.env`
	files by default to prevent interference with gemini-cli behavior. Use
	`.gemini/.env` files if you need to set these for gemini-cli specifically.
	- `NO_COLOR`:
	- Set to any value to disable all color output in the CLI.
	- `CLI_TITLE`:
	- Set to a string to customize the title of the CLI.
	- `CODE_ASSIST_ENDPOINT`:
	- Specifies the endpoint for the code assist server.
	- This is useful for development and testing.

	### Environment variable redaction

	To prevent accidental leakage of sensitive information, Gemini CLI automatically
	redacts potential secrets from environment variables when executing tools (such
	as shell commands). This "best effort" redaction applies to variables inherited
	from the system or loaded from `.env` files.

	Default Redaction Rules:

	- By Name: Variables are redacted if their names contain sensitive terms
	like `TOKEN`, `SECRET`, `PASSWORD`, `KEY`, `AUTH`, `CREDENTIAL`, `PRIVATE`, or
	`CERT`.
	- By Value: Variables are redacted if their values match known secret
	patterns, such as:
	- Private keys (RSA, OpenSSH, PGP, etc.)
	- Certificates
	- URLs containing credentials
	- API keys and tokens (GitHub, Google, AWS, Stripe, Slack, etc.)
	- Specific Blocklist: Certain variables like `CLIENT_ID`, `DB_URI`,
	`DATABASE_URL`, and `CONNECTION_STRING` are always redacted by default.

	Allowlist (Never Redacted):

	- Common system variables (for example, `PATH`, `HOME`, `USER`, `SHELL`, `TERM`,
	`LANG`).
	- Variables starting with `GEMINI_CLI_`.
	- GitHub Action specific variables.

	Configuration:

	You can customize this behavior in your `settings.json` file:

	- `security.allowedEnvironmentVariables`: A list of variable names to
	_never_ redact, even if they match sensitive patterns.
	- `security.blockedEnvironmentVariables`: A list of variable names to
	_always_ redact, even if they don't match sensitive patterns.

	```json
	{
	"security": {
	"allowedEnvironmentVariables": ["MY_PUBLIC_KEY", "NOT_A_SECRET_TOKEN"],
	"blockedEnvironmentVariables": ["INTERNAL_IP_ADDRESS"]
	}
	}
	```

	## Command-line arguments

	Arguments passed directly when running the CLI can override other configurations
	for that specific session.

	- `--acp`:
	- Starts the agent in Agent Communication Protocol (ACP) mode.
	- `--allowed-mcp-server-names`:
	- A comma-separated list of MCP server names to allow for the session.
	- `--allowed-tools <tool1,tool2,...>`:
	- A comma-separated list of tool names that will bypass the confirmation
	dialog.
	- Example: `gemini --allowed-tools "ShellTool(git status)"`
	- `--approval-mode <mode>`:
	- Sets the approval mode for tool calls. Available modes:
	- `default`: Prompt for approval on each tool call (default behavior)
	- `auto_edit`: Automatically approve edit tools (replace, write_file) while
	prompting for others
	- `yolo`: Automatically approve all tool calls (equivalent to `--yolo`)
	- `plan`: Read-only mode for tool calls (requires experimental planning to
	be enabled).
	> Note: This mode is currently under development and not yet fully
	> functional.
	- Cannot be used together with `--yolo`. Use `--approval-mode=yolo` instead of
	`--yolo` for the new unified approach.
	- Example: `gemini --approval-mode auto_edit`
	- `--debug` (`-d`):
	- Enables debug mode for this session, providing more verbose output. Open the
	debug console with F12 to see the additional logging.
	- `--delete-session <identifier>`:
	- Delete a specific chat session by its index number or full session UUID.
	- Use `--list-sessions` first to see available sessions, their indices, and
	UUIDs.
	- Example: `gemini --delete-session 3` or
	`gemini --delete-session a1b2c3d4-e5f6-7890-abcd-ef1234567890`
	- `--extensions <extension_name ...>` (`-e <extension_name ...>`):
	- Specifies a list of extensions to use for the session. If not provided, all
	available extensions are used.
	- Use the special term `gemini -e none` to disable all extensions.
	- Example: `gemini -e my-extension -e my-other-extension`
	- `--fake-responses`:
	- Path to a file with fake model responses for testing.
	- `--help` (or `-h`):
	- Displays help information about command-line arguments.
	- `--include-directories <dir1,dir2,...>`:
	- Includes additional directories in the workspace for multi-directory
	support.
	- Can be specified multiple times or as comma-separated values.
	- 5 directories can be added at maximum.
	- Example: `--include-directories /path/to/project1,/path/to/project2` or
	`--include-directories /path/to/project1 --include-directories /path/to/project2`
	- `--list-extensions` (`-l`):
	- Lists all available extensions and exits.
	- `--list-sessions`:
	- List all available chat sessions for the current project and exit.
	- Shows session indices, dates, message counts, and preview of first user
	message.
	- Example: `gemini --list-sessions`
	- `--model <model_name>` (`-m <model_name>`):
	- Specifies the Gemini model to use for this session.
	- Example: `npm start -- --model gemini-3-pro-preview`
	- `--output-format <format>`:
	- Description: Specifies the format of the CLI output for non-interactive
	mode.
	- Values:
	- `text`: (Default) The standard human-readable output.
	- `json`: A machine-readable JSON output.
	- `stream-json`: A streaming JSON output that emits real-time events.
	- Note: For structured output and scripting, use the
	`--output-format json` or `--output-format stream-json` flag.
	- `--prompt <your_prompt>` (`-p <your_prompt>`):
	- Used to pass a prompt directly to the command. This invokes Gemini CLI in a
	non-interactive mode.
	- `--prompt-interactive <your_prompt>` (`-i <your_prompt>`):
	- Starts an interactive session with the provided prompt as the initial input.
	- The prompt is processed within the interactive session, not before it.
	- Cannot be used when piping input from stdin.
	- Example: `gemini -i "explain this code"`
	- `--record-responses`:
	- Path to a file to record model responses for testing.
	- `--resume [session_id]` (`-r [session_id]`):
	- Resume a previous chat session. Use "latest" for the most recent session,
	provide a session index number, or provide a full session UUID.
	- If no session_id is provided, defaults to "latest".
	- Example: `gemini --resume 5` or `gemini --resume latest` or
	`gemini --resume a1b2c3d4-e5f6-7890-abcd-ef1234567890` or `gemini --resume`
	- See [Session Management](../cli/session-management.md) for more details.
	- `--sandbox` (`-s`):
	- Enables sandbox mode for this session.
	- `--screen-reader`:
	- Enables screen reader mode, which adjusts the TUI for better compatibility
	with screen readers.
	- `--version`:
	- Displays the version of the CLI.
	- `--yolo`:
	- Enables YOLO mode, which automatically approves all tool calls.

	## Context files (hierarchical instructional context)

	While not strictly configuration for the CLI's _behavior_, context files
	(defaulting to `GEMINI.md` but configurable via the `context.fileName` setting)
	are crucial for configuring the _instructional context_ (also referred to as
	"memory") provided to the Gemini model. This powerful feature lets you give
	project-specific instructions, coding style guides, or any relevant background
	information to the AI, making its responses more tailored and accurate to your
	needs. The CLI includes UI elements, such as an indicator in the footer showing
	the number of loaded context files, to keep you informed about the active
	context.

	- Purpose: These Markdown files contain instructions, guidelines, or context
	that you want the Gemini model to be aware of during your interactions. The
	system is designed to manage this instructional context hierarchically.

	### Example context file content (for example, `GEMINI.md`)

	Here's a conceptual example of what a context file at the root of a TypeScript
	project might contain:

	```markdown
	# Project: My Awesome TypeScript Library

	## General Instructions:

	- When generating new TypeScript code, follow the existing coding style.
	- Ensure all new functions and classes have JSDoc comments.
	- Prefer functional programming paradigms where appropriate.
	- All code should be compatible with TypeScript 5.0 and Node.js 20+.

	## Coding Style:

	- Use 2 spaces for indentation.
	- Interface names should be prefixed with `I` (for example, `IUserService`).
	- Private class members should be prefixed with an underscore (`_`).
	- Always use strict equality (`===` and `!==`).

	## Specific Component: `src/api/client.ts`

	- This file handles all outbound API requests.
	- When adding new API call functions, ensure they include robust error handling
	and logging.
	- Use the existing `fetchWithRetry` utility for all GET requests.

	## Regarding Dependencies:

	- Avoid introducing new external dependencies unless absolutely necessary.
	- If a new dependency is required, state the reason.
	```

	This example demonstrates how you can provide general project context, specific
	coding conventions, and even notes about particular files or components. The
	more relevant and precise your context files are, the better the AI can assist
	you. Project-specific context files are highly encouraged to establish
	conventions and context.

	- Hierarchical loading and precedence: The CLI implements a sophisticated
	hierarchical memory system by loading context files (for example, `GEMINI.md`)
	from several locations. Content from files lower in this list (more specific)
	typically overrides or supplements content from files higher up (more
	general). The exact concatenation order and final context can be inspected
	using the `/memory show` command. The typical loading order is:
	1. Global context file:
	- Location: `~/.gemini/<configured-context-filename>` (for example,
	`~/.gemini/GEMINI.md` in your user home directory).
	- Scope: Provides default instructions for all your projects.
	2. Project root and ancestors context files:
	- Location: The CLI searches for the configured context file in the
	current working directory and then in each parent directory up to either
	the project root (identified by a `.git` folder) or your home directory.
	- Scope: Provides context relevant to the entire project or a significant
	portion of it.
	3. Sub-directory context files (contextual/local):
	- Location: The CLI also scans for the configured context file in
	subdirectories _below_ the current working directory (respecting common
	ignore patterns like `node_modules`, `.git`, etc.). The breadth of this
	search is limited to 200 directories by default, but can be configured
	with the `context.discoveryMaxDirs` setting in your `settings.json`
	file.
	- Scope: Allows for highly specific instructions relevant to a particular
	component, module, or subsection of your project.
	- Concatenation and UI indication: The contents of all found context files
	are concatenated (with separators indicating their origin and path) and
	provided as part of the system prompt to the Gemini model. The CLI footer
	displays the count of loaded context files, giving you a quick visual cue
	about the active instructional context.
	- Importing content: You can modularize your context files by importing
	other Markdown files using the `@path/to/file.md` syntax. For more details,
	see the [Memory Import Processor documentation](./memport.md).
	- Commands for memory management:
	- Use `/memory refresh` to force a re-scan and reload of all context files
	from all configured locations. This updates the AI's instructional context.
	- Use `/memory show` to display the combined instructional context currently
	loaded, allowing you to verify the hierarchy and content being used by the
	AI.
	- See the [Commands documentation](./commands.md#memory) for full details on
	the `/memory` command and its sub-commands (`show` and `reload`).

	By understanding and utilizing these configuration layers and the hierarchical
	nature of context files, you can effectively manage the AI's memory and tailor
	Gemini CLI's responses to your specific needs and projects.

	## Sandboxing

	Gemini CLI can execute potentially unsafe operations (like shell commands and
	file modifications) within a sandboxed environment to protect your system.

	Sandboxing is disabled by default, but you can enable it in a few ways:

	- Using `--sandbox` or `-s` flag.
	- Setting `GEMINI_SANDBOX` environment variable.
	- Sandbox is enabled when using `--yolo` or `--approval-mode=yolo` by default.

	By default, it uses a pre-built `gemini-cli-sandbox` Docker image.

	For project-specific sandboxing needs, you can create a custom Dockerfile at
	`.gemini/sandbox.Dockerfile` in your project's root directory. This Dockerfile
	can be based on the base sandbox image:

	```dockerfile
	FROM gemini-cli-sandbox

	# Add your custom dependencies or configurations here.
	# Note: The base image runs as the non-root 'node' user.
	# You must switch to 'root' to install system packages.
	# For example:
	# USER root
	# RUN apt-get update && apt-get install -y some-package
	# USER node
	# COPY ./my-config /app/my-config
	```

	When `.gemini/sandbox.Dockerfile` exists, you can use `BUILD_SANDBOX`
	environment variable when running Gemini CLI to automatically build the custom
	sandbox image:

	```bash
	BUILD_SANDBOX=1 gemini -s
	```

	Building a custom sandbox with `BUILD_SANDBOX` is only supported when running
	Gemini CLI from source. If you installed the CLI with npm, build the Docker
	image separately and reference that image in your sandbox configuration.

	## Usage statistics

	To help us improve Gemini CLI, we collect anonymized usage statistics. This data
	helps us understand how the CLI is used, identify common issues, and prioritize
	new features.

	What we collect:

	- Tool calls: We log the names of the tools that are called, whether they
	succeed or fail, and how long they take to execute. We do not collect the
	arguments passed to the tools or any data returned by them.
	- API requests: We log the Gemini model used for each request, the duration
	of the request, and whether it was successful. We do not collect the content
	of the prompts or responses.
	- Session information: We collect information about the configuration of the
	CLI, such as the enabled tools and the approval mode.

	What we DON'T collect:

	- Personally identifiable information (PII): We do not collect any personal
	information, such as your name, email address, or API keys.
	- Prompt and response content: We do not log the content of your prompts or
	the responses from the Gemini model.
	- File content: We do not log the content of any files that are read or
	written by the CLI.

	How to opt out:

	You can opt out of usage statistics collection at any time by setting the
	`usageStatisticsEnabled` property to `false` under the `privacy` category in
	your `settings.json` file:

	```json
	{
	"privacy": {
	"usageStatisticsEnabled": false
	}
	}
	```