{"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":"2026-11-02T02:50:31.697Z","server":{"name":"dev.workers.yuechenxi-importexport.identifier-validator-api/identifier-validator","title":"Identifier Validator + Stablecoin Peg Verdict","description":"Offline IBAN/BIC/EU VAT/card/ISBN/GTIN validators + live USD stablecoin peg-health verdict.","version":"1.0.0","remote_url":"https://identifier-validator-api.yuechenxi-importexport.workers.dev/mcp","repo_url":null},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":303,"tool_count":8,"probed_at":"2026-11-01T18:01:15.876Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 303ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo identifier-validator-peg-verdict@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 8 tools e.g. \"validate_iban\"; 8/8 described, 8/8 fully-typed schemas, median description 126 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 303ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 1.0.0; namespace dev.workers.yuechenxi-importexport.identifier-validator-api 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":"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":"2026-11-01T18:01:15.876Z","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."}