{"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":"2026-10-13T10:55:09.139Z","server":{"name":"co.proofsource/proofsource","title":"Proofsource","description":"AI visibility: which buyer questions name your brand in ChatGPT, Perplexity, Claude, AI Overviews.","version":"1.0.0","remote_url":"https://app.proofsource.co/v1/mcp","repo_url":"https://github.com/lcbasu/proofsource-plugins"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":176,"tool_count":14,"probed_at":"2026-10-13T06:45:49.335Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 176ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo proofsource@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 14 tools e.g. \"list_brands\"; 14/14 described, 14/14 fully-typed schemas, median description 226 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 176ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 1.0.0; namespace co.proofsource 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":"citation_quality","metric":"citation_capability_advertised","status":"unverified","value_text":null,"evidence":"Metadata/tool descriptions advertise citation or evidence capability: by=engine (default): mention rate, share of voice, average position, citation share and sentiment per engine, with the change from the previous period | get_citations The websites AI answers cite for the brand's buyer questions, ranked by share of citations and by how many answers cite them, and where the brand's own site ranks. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-13T06:45:49.335Z","methodology_version":"trust-v1"},{"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":"2026-10-13T06:45:49.335Z","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."}