{"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":"2026-09-21T13:55:45.329Z","server":{"name":"br.com.acorridadosbairros/metro-quadrado","title":"A Corrida dos Bairros: preço do m² por bairro","description":"Preço do m² por bairro em 109 cidades do Brasil, nos 27 estados. Dados abertos, todo mês.","version":"2.0.0","remote_url":"https://corrida.metroquadrado.workers.dev/mcp","repo_url":"https://github.com/minutojaragua/metro-quadrado"},"operational_grade":{"grade":"A","score":93,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":220,"tool_count":6,"probed_at":"2026-09-21T11:45:52.651Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 220ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo Metro Quadrado@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 6 tools e.g. \"preco_m2\"; 6/6 described, 6/6 fully-typed schemas, median description 182 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 220ms"},{"criterion":"provenance","points":8,"max":15,"evidence":"description present; repository linked; version 2.0.0; namespace br.com.acorridadosbairros does NOT match remote host (expected *.acorridadosbairros.com.br)"}],"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":"2026-09-21T11:45:52.651Z","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."}