{"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":"2026-09-30T02:42:58.539Z","server":{"name":"io.github.nevermined-io/catalog","title":"Nevermined Catalog","description":"Discover and pay for services from the Nevermined Catalog using a spend-capped budget.","version":"1.51.0","remote_url":"https://mcp.live.nevermined.app/mcp","repo_url":"https://github.com/nevermined-io/nvm-monorepo"},"operational_grade":{"grade":"A","score":98,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":70,"tool_count":12,"probed_at":"2026-09-29T23:30:34.862Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 70ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo nevermined-commerce@1.54.0"},{"criterion":"tooling","points":33,"max":35,"evidence":"tools/list OK: 12 tools e.g. \"list_categories\"; 12/12 described, 9/12 fully-typed schemas, median description 1085 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 70ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 1.51.0; namespace io.github.nevermined-io 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":"claim_verification","metric":"advertised_corpus_scale","status":"unverified","value_text":"1000 records","evidence":"Advertised corpus-size expression(s) found in public metadata/tool descriptions: 1000 records. Black-box discovery does not establish corpus coverage; a manifest or sampled benchmark is required.","source_type":"live_probe","sample_size":null,"observed_at":"2026-09-29T23:30:34.862Z","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":"2026-09-29T23:30:34.862Z","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."}