{"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":"2026-08-29T11:36:50.164Z","server":{"name":"io.github.aleksUIX/vastlint","title":"VASTlint","description":"Validate VAST, VMAP, and DAAST ad tags against IAB specs. 232 rules, pure Rust core.","version":"0.13.5","remote_url":"https://vastlint.org/mcp","repo_url":"https://github.com/aleksUIX/vastlint"},"operational_grade":{"grade":"A","score":93,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":60,"tool_count":15,"probed_at":"2026-08-28T03:45:34.063Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 60ms"},{"criterion":"protocol","points":8,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2024-11-05, serverInfo vastlint@0.9.0 — registry declares deprecated 'sse' transport"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 15 tools e.g. \"validate_vast\"; 15/15 described, 15/15 fully-typed schemas, median description 266 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 60ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.13.5; namespace io.github.aleksUIX 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: Returns all issues found with severity, rule ID, location, and spec reference | explain_rule Get full details for a specific VAST validation rule: description, spec reference, severity, what triggers it, and how to fix it | Accepts delivery records with creative references and returns per-record compliance status plus an overall summary. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-08-28T03:45:34.063Z","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":"2026-08-28T03:45:34.063Z","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."}