{"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":"2026-09-28T16:56:44.613Z","server":{"name":"dev.workers.bhazarstudio.datoqa/historical-exchange-rates","title":"DatoQA — Historical Exchange Rates","description":"ECB EUR reference exchange rates since 1999, with exact dates and gaps. Not live trading prices.","version":"0.6.4","remote_url":"https://datoqa.bhazarstudio.workers.dev/mcp/fx","repo_url":null},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":352,"tool_count":6,"probed_at":"2026-09-28T13:15:49.346Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 352ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo datoqa@0.6.4"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 6 tools e.g. \"catalog\"; 6/6 described, 6/6 fully-typed schemas, median description 201 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 352ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 0.6.4; namespace dev.workers.bhazarstudio.datoqa 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: DatoQA — Historical Exchange Rates ECB EUR reference exchange rates since 1999, with exact dates and gaps | get_exchange_rates ECB indicative daily currency reference rates against EUR | Original rates freely available at the cited ECB source. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-09-28T13:15:49.346Z","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":"2026-09-28T13:15:49.346Z","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."}