Official MCP RegistryListed
CorpusFetch
O(1) routing, semantic search, and demand-driven experiences over 800+ records.
First seen 2 Nov 2026. Evidence as of 8 Nov 2026.
6
Tools
From an anonymous probe
1
Source listings
Each with its own history
9
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| corpusfetch_fetch_record | Fetch the full resolved experience record. Format 'md' (~1500 tokens, includes reasoning) or 'py' (~300 tokens, zero-prose executable invariants). | Not declared |
| 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. | Not declared |
| 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. | Not declared |
| 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. | Not declared |
| 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. | Not declared |
| 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. | Not declared |
Change history
- corpusfetch_request_experience: tool added
- Description changed (registry)
- corpusfetch_search: tool added
- Description changed (registry)
- corpusfetch_lookup_symptom: description changed (+"Look up operational experience for" +"specific" +"(e.g., UNICODE_HOMOGLYPH_OR_MOJIBAKE). Use this when facing an ambiguous failure state or an unbounded reasoning loop. Returns")
- corpusfetch_lookup_exception: description changed (+"Look up deterministic operational experience for" +"(e.g., KeyError, TimeoutError). Use this when you encounter an unexpected runtime error and need an empirically verified boundary decision. Returns" +"addresses.")
- corpusfetch_fetch_warrant: description changed (+"compact" +"precondition seal" +"resolved")
- corpusfetch_fetch_record: description changed (+"full resolved experience" +"(~1500 tokens, includes reasoning)" +"(~300 tokens, zero-prose executable invariants).")
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | com.corpusfetch/corpusfetch | 2 Nov 2026 | 8 Nov 2026 | 3 |