Developer builds MCP server to make AI agent failure registry searchable mid-incident

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A developer has built Casebook MCP, a remote Model Context Protocol server that connects AI agents to AgentPostmortem, a public registry of documented AI agent failures. The tool allows agents like Claude Code or Cursor to query real incident postmortems in real time during active investigations, rather than relying on humans to manually search documentation. Casebook exposes four tools — including a similar_failures function that matches a live incident description against past cases by keyword overlap and returns ranked precedents with lessons learned. The server runs as a stateless Cloudflare Worker implementing the 2025-03-26 streamable HTTP spec, with a single POST endpoint handling all JSON-RPC methods and no authentication since the data is public and read-only. The project aims to prevent recurring AI agent failure patterns — such as prompt-injection refund fraud or runaway retry loops — from being rediscovered repeatedly by different teams.

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