{"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":"2026-08-16T13:43:05.531Z","server":{"name":"io.github.AgentTanuki/x402-payment-safety","title":null,"description":"Authorize x402 payments before signing with request-bound, signed safety decisions.","version":"2.5.36","remote_url":"https://agent-guild-5d5r.onrender.com/mcp/payment-safety/","repo_url":"https://github.com/AgentTanuki/agent-guild"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":209,"tool_count":1,"probed_at":"2026-08-16T09:30:34.190Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 209ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo Agent Guild x402 Payment Safety@2.5.36"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 1 tools e.g. \"guild_x402_payment_safety\"; 1/1 described, 1/1 fully-typed schemas, median description 1015 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 209ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 2.5.36; namespace io.github.AgentTanuki 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":"sensitive_capabilities_declared","status":"concern","value_text":"guild_x402_payment_safety","evidence":"1 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: guild_x402_payment_safety. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":1,"observed_at":"2026-08-16T09:30:34.190Z","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":"2026-08-16T09:30:34.190Z","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."}