{"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":"2026-07-17T00:29:45.924Z","server":{"name":"io.github.corewebvitals/state-of-cwv","title":"State of Web Vitals","description":"Core Web Vitals metrics by CMS, CDN, and framework — free remote MCP, no auth.","version":"1.0.1","remote_url":"https://www.corewebvitals.io/api/state-of-cwv/mcp","repo_url":"https://github.com/corewebvitals/state-of-cwv-mcp"},"operational_grade":{"grade":"A","score":94,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":748,"tool_count":3,"probed_at":"2026-07-16T18:47:09.946Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 748ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-03-26, serverInfo state-of-cwv@1.0.0"},{"criterion":"tooling","points":32,"max":35,"evidence":"tools/list OK: 3 tools e.g. \"get_metrics\"; 3/3 described, 2/3 fully-typed schemas, median description 369 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 748ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 1.0.1; namespace io.github.corewebvitals 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":"2026-07-16T18:47:09.946Z","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."}