{"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":"2026-08-17T14:08:48.080Z","server":{"name":"com.stierproducts/tier-lists","title":"stierproducts tier lists","description":"S-to-F tier lists for 208 product categories. Every placement cited, with barcodes.","version":"1.1.0","remote_url":"https://mcp.stierproducts.com/mcp","repo_url":null},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":75,"tool_count":6,"probed_at":"2026-08-16T22:45:34.124Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 75ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo stierproducts@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 6 tools e.g. \"list_categories\"; 6/6 described, 6/6 fully-typed schemas, median description 244 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 75ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 1.1.0; namespace com.stierproducts 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":"claim_verification","metric":"advertised_corpus_scale","status":"unverified","value_text":"208 product","evidence":"Advertised corpus-size expression(s) found in public metadata/tool descriptions: 208 product. Black-box discovery does not establish corpus coverage; a manifest or sampled benchmark is required.","source_type":"live_probe","sample_size":null,"observed_at":"2026-08-16T22:45:34.124Z","methodology_version":"trust-v1"},{"dimension":"citation_quality","metric":"citation_capability_advertised","status":"unverified","value_text":null,"evidence":"Metadata/tool descriptions advertise citation or evidence capability: Every placement cited, with barcodes | to-F tier list for one category: every ranked product with its tier, rank, LP, verdict, pros, cons, citation counts, GTIN barcodes and, where the maker published one, the announcement date | ons, GTIN barcodes, the announcement date where the maker published one, and a breakdown of how the cited sources read (how many were glowing, positive, neutral or negative, and whether they were outlets, named authors, video channels or forum owners). No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-08-16T22:45:34.124Z","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":"2026-08-16T22:45:34.124Z","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."}