{"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":"2026-10-22T02:04:40.276Z","server":{"name":"com.tieredtravel/travel","title":"TieredTravel","description":"Daily travel costs at budget, mid-range and luxury for 100 cities, plus self-guided walking routes","version":"1.0.0","remote_url":"https://tieredtravel.com/mcp","repo_url":null},"operational_grade":{"grade":"A","score":94,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":599,"tool_count":4,"probed_at":"2026-10-21T22:16:00.334Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 599ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo com.tieredtravel/travel@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 4 tools e.g. \"destination_costs\"; 4/4 described, 4/4 fully-typed schemas, median description 304 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 599ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 1.0.0; namespace com.tieredtravel 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":"2026-10-21T22:16:00.334Z","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."}