{"$schema":"https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json","name":"ai.coldstate/knowledge","title":"ColdState — Deterministic Knowledge Infrastructure","description":"Deterministic knowledge for AI agents: search, fetch, cite and verify a 48M-entry knowledge base.","version":"0.1.0","websiteUrl":"https://services.coldstate.ai","remotes":[{"type":"streamable-http","url":"https://cold-api.coldstate.ai/mcp","headers":[{"name":"Authorization","description":"Bearer <COLDSTATE_API_KEY>. Get a key (free tier available) at https://services.coldstate.ai/signup","isRequired":true,"isSecret":true}]}],"_meta":{"ai.coldstate/tools":[{"name":"coldstate_search_global","description":"Search the 48M-entry global knowledge base (35 domains); deterministic ranking, Ψ score + state per result"},{"name":"coldstate_fetch","description":"Fetch a knowledge entry verbatim by stable id, with content_hash and kb_snapshot"},{"name":"coldstate_cite","description":"Canonical, reproducible citation for an entry (id + content_hash + kb_snapshot)"},{"name":"coldstate_verify","description":"Verify a previously cited fact is unchanged by comparing its content_hash"},{"name":"coldstate_snapshot","description":"Current knowledge-base snapshot id for pinning reproducible results"},{"name":"coldstate_related","description":"Deterministically related entries via the concept-cluster graph"},{"name":"coldstate_resolve","description":"Resolve a name/alias/surface form to a canonical entry id"},{"name":"coldstate_batch_search","description":"Several queries against one consistent snapshot in a single call"},{"name":"coldstate_isomorph","description":"Cross-domain structural analog of an entry (same structure, different domain)"},{"name":"coldstate_stats","description":"Query coverage / state distribution, or global KB stats"},{"name":"coldstate_domains","description":"List knowledge domains with entry counts"},{"name":"coldstate_capabilities","description":"Machine-readable manifest: tools, domains, snapshot, guarantees, limits"},{"name":"coldstate_search","description":"Search one of your own zero-knowledge custom indexes"},{"name":"coldstate_list_indexes","description":"List your custom indexes"},{"name":"coldstate_browse_documents","description":"Browse a custom index (ref_ids + metrics; no stored text)"},{"name":"coldstate_explain","description":"Explain why a document ranked for a query, term by term"}],"ai.coldstate/openapi":"https://cold-api.coldstate.ai/openapi.json","ai.coldstate/llms_txt":"https://cold-api.coldstate.ai/llms.txt"}}