{"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":"2026-07-17T00:21:15.113Z","server":{"name":"io.mcpcentral/jsoncanvas","title":null,"description":"Create, validate, edit, export (markdown/svg/png/mermaid), and search JSON Canvas files.","version":"0.1.0","remote_url":"https://jsoncanvas.mcpcentral.io/mcp","repo_url":"https://github.com/mcpcentral-io/jsoncanvas-mcp"},"operational_grade":{"grade":"C","score":62,"provisional":1,"reachable":1,"auth_state":"auth-wellbehaved","latency_ms":774,"tool_count":null,"probed_at":"2026-07-15T00:15:34.746Z","evidence":[{"criterion":"reachability","points":18,"max":25,"evidence":"HTTP 401 in 774ms — auth required; WWW-Authenticate present: \"Bearer realm=\"mcp\", error=\"missing_header\", error_description=\"Missing or invalid Authorization header\", resource_metada\""},{"criterion":"protocol","points":0,"max":15,"evidence":"handshake not reachable behind auth — unverified"},{"criterion":"tooling","points":0,"max":0,"evidence":"auth-gated — tooling unverifiable, excluded from score (grade marked provisional)"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 774ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.1.0; namespace io.mcpcentral matches endpoint/repo"}],"protocol_access":"auth-wellbehaved"},"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":"unaudited","observations":[],"response_benchmarks":[],"reviewed_field_reports":[],"interpretation":"Dimensions are independent; missing evidence is not a pass; field reports are qualitative, moderated and never votes."}