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MCP (Model Context Protocol)
AIA protocol for connecting language models to tools, data sources, and other agents over a typed JSON-RPC interface. The eval-mcp-server on this site conforms to MCP 2025-06-18.
Full definition
MCP (Model Context Protocol, Anthropic 2024) is a typed JSON-RPC protocol for exposing tools, resources, and prompts to a language model. The model declares which tools it wants to call, the host routes the call to the MCP server, and the server returns a JSON-schema-validated response. On this site, the eval-mcp-server is a reference MCP implementation that hits 100% conformance with the 2025-06-18 spec and ships a public eval harness.
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