{"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":"2026-10-14T10:09:28.285Z","server":{"name":"io.github.Embassy-of-the-Free-Mind/sourcelibrary","title":"Source Library","description":"Search 15K rare pre-modern texts translated to English: philosophy, religion, science, literature.","version":"4.3.4","remote_url":"https://sourcelibrary.org/api/mcp","repo_url":"https://github.com/Embassy-of-the-Free-Mind/sourcelibrary-v2"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":230,"tool_count":15,"probed_at":"2026-10-09T15:32:07.782Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 230ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo source-library@4.7.1"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 15 tools e.g. \"search_library\"; 15/15 described, 15/15 fully-typed schemas, median description 1089 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 230ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 4.3.4; namespace io.github.Embassy-of-the-Free-Mind 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":"observations_published","observations":[{"dimension":"citation_quality","metric":"citation_capability_advertised","status":"unverified","value_text":null,"evidence":"Metadata/tool descriptions advertise citation or evidence capability: Each result includes tot search_translations RETURNS QUOTABLE PASSAGES (page-level snippets + citation URLs), matched by KEYWORD/term | Returns the book's AI-generated summary, chapter list, edition metadata, DOI, page counts, IIIF manifest, and the cover image (inline, so you and the user can see the book) | Preferred: use the chapter param to read one chapter at a time (includes [Page N] markers for citation). No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-09T15:32:07.782Z","methodology_version":"trust-v1"},{"dimension":"security","metric":"authentication_boundary","status":"observed","value_text":"open","evidence":"Live protocol probe observed auth_state=open. This describes discovery/access behavior; it is not by itself a vulnerability finding.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-09T15:32:07.782Z","methodology_version":"trust-v1"}],"response_benchmarks":[],"reviewed_field_reports":[],"interpretation":"Dimensions are independent; missing evidence is not a pass; field reports are qualitative, moderated and never votes."}