"""Configuration resources for exposing server settings."""
import json
import os
from mcp.server import Server
from mcp.types import Resource, TextContent
def register_config_resources(server: Server) -> None:
"""Register configuration resources with the server."""
@server.list_resources()
async def list_resources() -> list[Resource]:
return [
Resource(
uri="config://server",
name="Server Configuration",
description="Current server configuration settings",
mimeType="application/json",
),
Resource(
uri="config://environment",
name="Environment Variables",
description="Available environment variables (filtered)",
mimeType="application/json",
),
]
@server.read_resource()
async def read_resource(uri: str) -> list[TextContent]:
match uri:
case "config://server":
config = _get_server_config()
return [TextContent(type="text", text=json.dumps(config, indent=2))]
case "config://environment":
env_vars = _get_filtered_environment()
return [TextContent(type="text", text=json.dumps(env_vars, indent=2))]
case _:
raise ValueError(f"Unknown resource: {uri}")
def _get_server_config() -> dict:
"""Get current server configuration."""
return {
"name": "mcp-server",
"version": "0.1.0",
"capabilities": {
"tools": True,
"resources": True,
"prompts": True,
},
}
def _get_filtered_environment() -> dict:
"""Get environment variables, filtering sensitive ones."""
sensitive_patterns = ("KEY", "SECRET", "PASSWORD", "TOKEN", "CREDENTIAL")
filtered_env = {}
for key, value in os.environ.items():
if any(pattern in key.upper() for pattern in sensitive_patterns):
filtered_env[key] = "***REDACTED***"
else:
filtered_env[key] = value
return filtered_env
