{"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":"2026-10-01T12:04:30.744Z","server":{"name":"io.github.yschimke/compose-preview","title":"Compose Preview Catalogs","description":"Browse, inspect and render Jetpack Compose Material 3 and Wear component catalogs.","version":"3.88.0","remote_url":"https://preview.coo.ee/mcp","repo_url":"https://github.com/yschimke/compose-preview-server"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":140,"tool_count":46,"probed_at":"2026-10-01T05:15:25.696Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 140ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo compose-preview-catalog@3.89.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 46 tools e.g. \"request_access\"; 46/46 described, 46/46 fully-typed schemas, median description 396 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 140ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 3.88.0; namespace io.github.yschimke 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: ui_builder_get_links Read what a design is **for**: the `issue` it was drawn for, the `reference` frame in the design tool it reproduces, the `pr` that implemented it, the `thread` it is being discussed in, and the `previous` design it continues | `issue`, `reference`, `pr` and `thread` are absolute http or https URLs, at most 2 KB each; `previous` is a design id on this host, not a URL | Pin a new thread with `markId` (a stroke on the reference overlay), `nodeId` (a node in the design), or `x`/`y` in frame fractions, so the person reading it can see what you meant. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-01T05:15:25.696Z","methodology_version":"trust-v1"},{"dimension":"security","metric":"sensitive_capabilities_declared","status":"concern","value_text":"ui_builder_delete_design","evidence":"1 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: ui_builder_delete_design. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":1,"observed_at":"2026-10-01T05:15:25.696Z","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":"2026-10-01T05:15:25.696Z","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."}