mcp-patterns

MCP servers expose tool handlers through list_tools and call_tool interfaces. Use the provided Python or Node.js patterns to register tools, define their parameters, and implement invocation logic that Claude can call directly.

Implement list_resources and read_resource handlers to expose managed resources. The patterns include proper URI schemes, metadata definitions, and content streaming for efficient resource delivery to Claude.

MCP authentication patterns support both environment variable and OAuth approaches. Choose env vars for simpler setups or OAuth for delegated access; the patterns show configuration and token handling for each method.

Yes. These patterns are designed for Python 3.10+ and Node.js 18+ MCP server development, covering tool registration, resource management, authentication, state caching, testing, and error handling across both runtimes.

MCP patterns provide tested approaches for managing server state and implementing caching layers. These reduce redundant computations and improve response latency for repeated tool calls and resource reads.

The patterns include testing strategies for tool invocation, resource reads, and error scenarios. Use these to validate handler logic, authentication flows, and edge cases before deploying to Claude.