Resources

When you build an MCP server, you rarely have to start from a blank file. The Model Context Protocol project maintains reference implementations, a registry for publishing and discovering servers, and the specification itself. Lean on these to learn proven patterns and to ship your server to users.

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Reference Servers

The official modelcontextprotocol/servers repository is a large collection of reference and example MCP servers. It’s the best place to see how real servers structure tools, handle authentication, and format output.

• Learn by example. Read a server close to your use case before writing your own.
• Copy proven patterns. Tool naming, schema design, and error handling are already worked out — port what fits.
• Use them as test fixtures. Run an existing server to confirm your client setup works before debugging your own.

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MCP Registry

The MCP Registry is a community-driven registry service for publishing and discovering MCP servers.

• Discover existing servers before building something that already exists.
• Publish your server so agents and users can find and install it.
• Reuse metadata conventions the registry expects (name, description, capabilities) when you design your own server’s manifest.

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Specification & Documentation

The modelcontextprotocol/modelcontextprotocol repository holds the official specification and documentation.

• Use it as the source of truth for protocol behavior — transports, capabilities, versioning, and message formats.
• Check it when SDKs disagree or when you hit edge cases that examples don’t cover.
• Track changes to stay compatible as the protocol evolves.

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