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MCP server: give your AI tool a custom tool

A minimal Model Context Protocol server that exposes one useful tool to Cursor, Claude, and other MCP clients.

Paste into Cursor, Claude Code, Codex, Lovable, Bolt, Replit or v0

Build a minimal MCP (Model Context Protocol) server in TypeScript using the official @modelcontextprotocol/sdk package.

- One tool: [TOOL NAME] that [WHAT IT DOES], with a typed input schema (zod) and clear description.
- stdio transport so desktop/IDE clients can launch it.
- Validate inputs and return helpful error messages.
- README with the JSON config snippet to register it in my MCP client (command + args), and how to test it with the MCP Inspector.
Follow the SDK's current docs. APIs have changed across versions, so check the installed version's README.

Tips

If the client says 'spawn npx ENOENT', give it the full path to node/npx.

Works with: Cursor, Claude Code, Codex. Last reviewed 2026-11-13.