File size: 2,517 Bytes
683b580 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | import json
import os
import re
from typing import Any, Union
from dotenv import load_dotenv
from fastmcp.mcp_config import (
RemoteMCPServer,
StdioMCPServer,
)
from pydantic import BaseModel
# These two are the canonical server config types for MCP servers.
MCPServerConfig = Union[StdioMCPServer, RemoteMCPServer]
class Config(BaseModel):
"""Configuration manager"""
model_name: str
mcpServers: dict[str, MCPServerConfig] = {}
save_sessions: bool = True
session_dataset_repo: str = "akseljoonas/hf-agent-sessions"
auto_save_interval: int = 3 # Save every N user turns (0 = disabled)
yolo_mode: bool = False # Auto-approve all tool calls without confirmation
# Permission control parameters
confirm_cpu_jobs: bool = True
auto_file_upload: bool = False
def substitute_env_vars(obj: Any) -> Any:
"""
Recursively substitute environment variables in any data structure.
Supports ${VAR_NAME} syntax for required variables and ${VAR_NAME:-default} for optional.
"""
if isinstance(obj, str):
pattern = r"\$\{([^}:]+)(?::(-)?([^}]*))?\}"
def replacer(match):
var_name = match.group(1)
has_default = match.group(2) is not None
default_value = match.group(3) if has_default else None
env_value = os.environ.get(var_name)
if env_value is not None:
return env_value
elif has_default:
return default_value or ""
else:
raise ValueError(
f"Environment variable '{var_name}' is not set. "
f"Add it to your .env file."
)
return re.sub(pattern, replacer, obj)
elif isinstance(obj, dict):
return {key: substitute_env_vars(value) for key, value in obj.items()}
elif isinstance(obj, list):
return [substitute_env_vars(item) for item in obj]
return obj
def load_config(config_path: str = "config.json") -> Config:
"""
Load configuration with environment variable substitution.
Use ${VAR_NAME} in your JSON for any secret.
Automatically loads from .env file.
"""
# Load environment variables from .env file
load_dotenv()
with open(config_path, "r") as f:
raw_config = json.load(f)
config_with_env = substitute_env_vars(raw_config)
return Config.model_validate(config_with_env)
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