{"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":"2026-10-20T01:25:07.223Z","server":{"name":"io.github.lgs1520/call402","title":"call402 — x402 Agent Services","description":"x402 pay-per-call APIs for agents: web search, wallet/token checks, text structuring.","version":"1.0.0","remote_url":"https://call402.com/mcp","repo_url":null},"operational_grade":{"grade":"B","score":87,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":861,"tool_count":8,"probed_at":"2026-10-19T21:01:05.784Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 861ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo x402-agent-services@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 8 tools e.g. \"text-to-structure\"; 8/8 described, 8/8 fully-typed schemas, median description 399 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 861ms"},{"criterion":"provenance","points":5,"max":15,"evidence":"description present; no repository URL; version 1.0.0; namespace io.github.lgs1520 does NOT match remote host (expected *.lgs1520.github.io)"}],"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-rates Daily foreign-exchange reference rates for the major fiat currencies (USD, EUR, CNY, GBP, JPY, HKD and more) from the European Central Bank via Frankfurter: convert amounts, price in a local c | Reference rates are published once per working day; they are not live trading quotes. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-19T21:01:05.784Z","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":"2026-10-19T21:01:05.784Z","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."}