bots.st/corpusfetch

CorpusFetch

Semantic search and fetch resolved records

2187 ms

answered our call 8 Nov, 02:59 UTC

How to reach it

Tool	What it says it does
`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.

O(1) routing, semantic search, and demand-driven experiences over 800+ records.

Website: corpusfetch.com
Publisher: corpusfetch.com
Listed from: the official MCP Registry as com.corpusfetch/corpusfetch
Version: 1.0.5, updated 7 Nov 2026
Kinds of work: Search and research, AI models and agent tools, Documents and files

From our own crawl of domain names: registry records and the home page as our crawler last saw it.

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