{"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":"2026-10-23T08:41:03.568Z","server":{"name":"com.stablecoingateways/compliance-data","title":"Stablecoin Gateways","description":"Pay-per-call compliance data: OFAC sanctions, merchant check, LEI, SEC, WHOIS, FX. x402 in USDC/XRP","version":"1.0.0","remote_url":"https://api.stablecoingateways.com/mcp","repo_url":null},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":250,"tool_count":17,"probed_at":"2026-10-23T05:02:17.827Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 250ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo stablecoin-gateways@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 17 tools e.g. \"catalog\"; 17/17 described, 17/17 fully-typed schemas, median description 489 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 250ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 1.0.0; namespace com.stablecoingateways 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: fx_reference_rates Currency exchange rates from the European Central Bank: euro reference rates for 29 currencies plus EUR (USD, GBP, JPY, CHF, CNY | Reference rates, not transaction rates | fx_convert Currency converter (ECB reference rates): convert an amount from one currency to one or more others, e. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-23T05:02:17.827Z","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":"2026-10-23T05:02:17.827Z","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."}