{"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":"2026-10-11T05:01:05.725Z","server":{"name":"app.derate/derate","title":"DERATE — truck fault codes","description":"Heavy-duty truck SPN/FMI and OBD fault codes: meaning, safe-to-drive verdict, parts and recalls.","version":"2.0.0","remote_url":"https://derate.app/mcp","repo_url":null},"operational_grade":{"grade":"A","score":94,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":833,"tool_count":13,"probed_at":"2026-10-10T23:45:52.385Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 833ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo derate@2.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 13 tools e.g. \"buscar_codigo\"; 13/13 described, 13/13 fully-typed schemas, median description 180 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 833ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 2.0.0; namespace app.derate 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":"2026-10-10T23:45:52.385Z","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."}