{"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":"2026-08-29T11:54:03.130Z","server":{"name":"io.github.heavyblotto/caelus-mcp","title":null,"description":"34-tool Caelus MCP for validated astrology: charts, transits, Vedic, facts, sky view, synthetic.","version":"0.24.1","remote_url":"https://www.ephemengine.com/api/mcp","repo_url":"https://github.com/heavyblotto/caelus"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":270,"tool_count":35,"probed_at":"2026-08-28T11:30:34.303Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 270ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo caelus@0.24.1"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 35 tools e.g. \"natal_chart\"; 35/35 described, 35/35 fully-typed schemas, median description 437 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 270ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.24.1; namespace io.github.heavyblotto 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: similar_skies Find when the sky most resembled a reference moment | Builds a feature vector for the reference date's planetary configuration and scans a window for the closest matches by cosine similarity (1. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-08-28T11:30:34.303Z","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":"2026-08-28T11:30:34.303Z","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."}