{"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":"2026-07-21T12:44:53.689Z","server":{"name":"dev.usaref/reference-data","title":null,"description":"North American reference data: policy rates, VAT/GST, wages, CPI, tax, holidays - 2 countries.","version":"1.0.0","remote_url":"https://usaref.dev/mcp","repo_url":null},"operational_grade":{"grade":"A","score":94,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":1428,"tool_count":9,"probed_at":"2026-07-20T18:47:20.787Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 1428ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo usaref@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 9 tools e.g. \"list_series\"; 9/9 described, 9/9 fully-typed schemas, median description 285 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 1428ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 1.0.0; namespace dev.usaref 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: North American reference data: policy rates, VAT/GST, wages, CPI, tax, holidays - 2 countries | Catalog of all usaref reference-data series: supported countries, series ids, descriptions, freshness metadata and per-series URLs | r for a supported country, including gazetted movable holidays, with the official government source cited. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-07-20T18:47:20.787Z","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":"2026-07-20T18:47:20.787Z","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."}