{"attribution":"MCP Queen — the evidence layer for MCP (https://mcpqueen.com)","license":"CC BY 4.0 — free to use with attribution and a link to mcpqueen.com","methodology":"https://mcpqueen.com/registry#methodology","docs":"https://mcpqueen.com/api","generated_at":"2026-07-17T07:16:50.041Z","server":{"name":"io.github.rarasAI/raras","title":null,"description":"Disease Twin — Brazil's rare-disease knowledge graph (10,468) over MCP. Source-grounded, PT-BR.","version":"0.2.0","remote_url":"https://raras.org/api/mcp","repo_url":"https://github.com/rarasAI/raras"},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":906,"tool_count":21,"probed_at":"2026-07-14T19:15:39.867Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 906ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo rarasnet-http@0.1.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 21 tools e.g. \"search_diseases\"; 21/21 described, 21/21 fully-typed schemas, median description 84 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 906ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.2.0; namespace io.github.rarasAI matches endpoint/repo"}],"protocol_access":"open"},"field_semantics":{"auth_state":"Deprecated name retained for compatibility. It means protocol handshake/discovery access only, not tool-level data entitlement.","protocol_access":"Preferred name for auth_state."},"audit_state":"unaudited","observations":[],"response_benchmarks":[],"reviewed_field_reports":[],"interpretation":"Dimensions are independent; missing evidence is not a pass; field reports are qualitative, moderated and never votes."}