{"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":"2026-08-27T22:50:02.023Z","server":{"name":"foundation.tattoo/carrier-intelligence","title":null,"description":"Free FMCSA carrier background checks: authority, insurance, crashes, safety scores. 4.4M carriers.","version":"0.2.0","remote_url":"https://mcp.tattoo.foundation/mcp","repo_url":"https://github.com/tanahak/tattoo.foundation"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":103,"tool_count":1,"probed_at":"2026-08-27T04:00:33.842Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 103ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo tattoo-foundation@0.3.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 1 tools e.g. \"h2b_trucking_employers\"; 1/1 described, 1/1 fully-typed schemas, median description 297 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 103ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.2.0; namespace foundation.tattoo 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":"2026-08-27T04:00:33.842Z","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."}