Add Claude issue triage (#1510)

.github/workflows/marvin-label-triage.yml

@@ -0,0 +1,144 @@
+name: Marvin Label Triage
+description: Automatically triage GitHub issues and PRs using Marvin
+on:
+  issues:
+    types: [opened]
+  pull_request:
+    types: [opened]
+  workflow_dispatch:
+    inputs:
+      issue_number:
+        description: "Issue or PR number to triage"
+        required: true
+        type: string
+
+jobs:
+  triage-issue:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+      issues: write
+      pull-requests: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Generate Marvin App token
+        id: marvin-token
+        uses: actions/create-github-app-token@v2
+        with:
+          app-id: ${{ secrets.MARVIN_APP_ID }}
+          private-key: ${{ secrets.MARVIN_APP_PRIVATE_KEY }}
+
+      - name: Create triage prompt
+        run: |
+          mkdir -p /tmp/claude-prompts
+          cat > /tmp/claude-prompts/triage-prompt.txt << 'EOF'
+          You're an issue triage assistant for FastMCP, a Python framework for building Model Context Protocol servers and clients. Your task is to analyze issues/PRs and apply appropriate labels.
+
+          IMPORTANT: Your ONLY action should be to apply labels using mcp__github__update_issue. DO NOT post any comments.
+
+          Issue/PR Information:
+          - REPO: ${{ github.repository }}
+          - NUMBER: ${{ github.event.issue.number || github.event.pull_request.number || inputs.issue_number }}
+          - TYPE: ${{ github.event.issue && 'issue' || github.event.pull_request && 'pull_request' || 'unknown' }}
+
+          TRIAGE PROCESS:
+
+          1. Get available labels:
+             Run: `gh label list`
+
+          2. Retrieve issue/PR details using GitHub tools:
+             - mcp__github__get_issue: Get the issue/PR details
+             - mcp__github__get_issue_comments: Read any discussion
+             - If the issue/PR mentions other issues (e.g., "fixes #123", "related to #456"), use mcp__github__get_issue to read those linked issues for additional context
+
+          3. Analyze and apply labels based on these guidelines:
+
+          CORE CATEGORIES (apply EXACTLY ONE - these are mutually exclusive):
+          - bug: Reports of broken functionality OR PRs that fix bugs
+          - enhancement: New functions/endpoints, improvements to existing features, internal tooling, workflow improvements, minor new capabilities
+          - feature: ONLY for major headline functionality worthy of a blog post announcement (2-4 per release, never for issues)
+          - documentation: Primary change is to docs, examples, or guides
+
+          FEATURE vs ENHANCEMENT guidance:
+          - feature: Major systems like new auth systems, MCP composition, proxying MCP servers, major CLI commands that transform workflows
+          - enhancement: New functions/endpoints, internal workflows, CI improvements, developer tooling, refactoring, utilities, typical new CLI commands
+          - If unsure between feature/enhancement, choose enhancement
+
+          Note: If a PR fixes a bug, label it "bug" not "enhancement"
+
+          SPECIAL CATEGORY (can be combined with above):
+          - breaking change: Changes that break backward compatibility (in addition to core category)
+
+          PRIORITY (apply if clearly evident):
+          - high-priority: Critical bugs affecting many users, security issues, or blocking core functionality
+          - low-priority: Edge cases, nice-to-have improvements, or cosmetic issues
+          - Default to no priority label if unclear
+
+          STATUS (apply if applicable):
+          - needs more info: Issue lacks reproduction steps, error messages, or clear description
+          - good first issue: ONLY if it's clearly scoped, has obvious solution, and touches limited files
+          - invalid: Spam, completely off-topic, or nonsensical (often LLM-generated)
+
+          AREA LABELS (apply ONLY when thematically central to the issue):
+          - cli: Issues primarily about FastMCP CLI commands (run, dev, install)
+          - client: Issues primarily about the Client SDK or client-side functionality
+          - server: Issues primarily about FastMCP server implementation
+          - auth: Authentication is the main concern (Bearer, JWT, OAuth, WorkOS)
+          - openapi: OpenAPI integration/parsing is the primary topic
+          - http: HTTP transport or networking is the main issue
+          - contrib: Specifically about community contributions in src/contrib/
+
+          IMPORTANT LABELING RULES:
+          - Be selective - only apply labels that are clearly relevant
+          - Don't apply area labels just because a file in that area is mentioned
+          - The issue must be PRIMARILY about that area to get the label
+          - When in doubt, don't apply the label
+          - Apply 2-5 labels total typically (category + maybe priority + maybe 1-2 areas)
+
+          META LABELS (rarely needed for issues):
+          - dependencies: Only for dependabot PRs or issues specifically about package updates
+          - DON'T MERGE: Only if PR author explicitly states it's not ready
+
+          4. Apply selected labels:
+             Use mcp__github__update_issue to apply your selected labels
+             DO NOT post any comments
+          EOF
+
+      - name: Setup GitHub MCP Server
+        run: |
+          mkdir -p /tmp/mcp-config
+          cat > /tmp/mcp-config/mcp-servers.json << 'EOF'
+          {
+            "mcpServers": {
+              "github": {
+                "command": "docker",
+                "args": [
+                  "run",
+                  "-i",
+                  "--rm",
+                  "-e",
+                  "GITHUB_PERSONAL_ACCESS_TOKEN",
+                  "ghcr.io/github/github-mcp-server:sha-7aced2b"
+                ],
+                "env": {
+                  "GITHUB_PERSONAL_ACCESS_TOKEN": "${{ steps.marvin-token.outputs.token }}"
+                }
+              }
+            }
+          }
+          EOF
+
+      - name: Run Marvin for Issue Triage
+        uses: anthropics/claude-code-base-action@beta
+        with:
+          prompt_file: /tmp/claude-prompts/triage-prompt.txt
+          allowed_tools: "Bash(gh label list),mcp__github__get_issue,mcp__github__get_issue_comments,mcp__github__update_issue"
+          timeout_minutes: "5"
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          mcp_config: /tmp/mcp-config/mcp-servers.json
+          claude_env: |
+            GH_TOKEN: ${{ steps.marvin-token.outputs.token }}