{"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":"2026-10-31T13:34:08.925Z","server":{"name":"dev.redbison/mcp","title":"RedBison","description":"500+ free tools over MCP: dev, text and security utilities, 230+ calculators. No sign-up.","version":"2.1.0","remote_url":"https://mcp.redbison.dev","repo_url":null},"operational_grade":{"grade":"A","score":91,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":2183,"tool_count":82,"probed_at":"2026-10-31T07:45:59.867Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 2183ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo redbison-mcp@2.1.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 82 tools e.g. \"search_tools\"; 82/82 described, 82/82 fully-typed schemas, median description 324 chars"},{"criterion":"latency","points":4,"max":10,"evidence":"initialize round-trip 2183ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 2.1.0; namespace dev.redbison 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":"security","metric":"sensitive_capabilities_declared","status":"concern","value_text":"list_calculators, chmod_convert, cron_build, curl_to_code, docker_run_to_compose","evidence":"5 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: list_calculators, chmod_convert, cron_build, curl_to_code, docker_run_to_compose. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":5,"observed_at":"2026-10-31T07:45:59.867Z","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":"2026-10-31T07:45:59.867Z","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."}