{"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":"2026-08-28T23:40:24.446Z","server":{"name":"com.leap-labs/discovery-engine","title":"Disco","description":"Find novel, statistically validated patterns in tabular data — hypothesis-free.","version":"1.0.1","remote_url":"https://disco.leap-labs.com/mcp","repo_url":"https://github.com/leap-laboratories/discovery-engine"},"operational_grade":{"grade":"A","score":94,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":1770,"tool_count":14,"probed_at":"2026-08-26T15:15:40.246Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 1770ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo Disco@1.26.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 14 tools e.g. \"discovery_list_plans\"; 14/14 described, 14/14 fully-typed schemas, median description 581 chars"},{"criterion":"latency","points":4,"max":10,"evidence":"initialize round-trip 1770ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 1.0.1; namespace com.leap-labs 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: gs:\n        file_size_mb: Size of the data discovery_upload Upload a dataset file and return a file reference for use with discovery_analyze | Returns discovered patterns (with conditions, p-values, novelty scores,\n    citations), feature importance scores, a summary with key insights, column\n    statistics, and suggestions for what to explore next. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-08-26T15:15:40.246Z","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":"2026-08-26T15:15:40.246Z","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."}