{"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":"2026-10-16T18:54:43.579Z","server":{"name":"org.402mcp/registry","title":"402MCP.org — HTTP 402 & Agent Payment Registry","description":"Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.","version":"1.1.1","remote_url":"https://402mcp.org/api/v1/mcp","repo_url":"https://github.com/402MCP/402mcp"},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":791,"tool_count":7,"probed_at":"2026-10-16T14:45:48.314Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 791ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo 402mcp.org@1.1.1"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 7 tools e.g. \"decode_402_challenge\"; 7/7 described, 7/7 fully-typed schemas, median description 253 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 791ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 1.1.1; namespace org.402mcp 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: get_scheme_reference Protocol reference for L402, x402 or MPP: challenge, credential and receipt headers, encodings, the request/response flow, an example, and links to the specifications. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-16T14:45:48.314Z","methodology_version":"trust-v1"},{"dimension":"security","metric":"sensitive_capabilities_declared","status":"concern","value_text":"get_scheme_reference","evidence":"1 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: get_scheme_reference. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":1,"observed_at":"2026-10-16T14:45:48.314Z","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":"2026-10-16T14:45:48.314Z","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."}