CorpusFetch

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "corpusfetch": {
      "type": "http",
      "url": "https://mcp.corpusfetch.com/mcp"
    }
  }
}

6 tools

• corpusfetch_fetch_record

  Fetch the full resolved experience record. Format 'md' (~1500 tokens, includes reasoning) or 'py' (~300 tokens, zero-prose executable invariants).

• corpusfetch_fetch_warrant

  Fetch the compact ~220-token precondition seal for a resolved record. Always call this before fetching the full record. Check the seal; if it fails, the record does not apply to your current state.

• corpusfetch_lookup_exception

  Look up deterministic operational experience for a Python exception class (e.g., KeyError, TimeoutError). Use this when you encounter an unexpected runtime error and need an empirically verified boundary decision. Returns candidate addresses.

• corpusfetch_lookup_symptom

  Look up operational experience for a specific runtime symptom (e.g., UNICODE_HOMOGLYPH_OR_MOJIBAKE). Use this when facing an ambiguous failure state or an unbounded reasoning loop. Returns candidate addresses.

• corpusfetch_request_experience

  Request a new operational experience. If you searched and couldn't find a record, use this to log the missing error or symptom so the corpus can generate it.

• corpusfetch_search

  Search the CorpusFetch corpus by natural language keywords or concepts. Use this when you need to find operational experience but don't have an exact exception class.

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