{"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":"2026-08-02T18:51:38.612Z","server":{"name":"dev.depfeed/depfeed","title":"DepFeed","description":"Change intelligence for coding agents: sourced breaking changes for npm, PyPI, and Rust packages.","version":"0.6.3","remote_url":"https://depfeed.dev/","repo_url":"https://github.com/nokhiz/depfeed"},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":734,"tool_count":19,"probed_at":"2026-08-02T15:00:30.764Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 734ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo depfeed@0.1.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 19 tools e.g. \"get_package_updates\"; 19/19 described, 19/19 fully-typed schemas, median description 606 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 734ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.6.3; namespace dev.depfeed 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: returns NotCovered: that means it isn't in DepFeed's curated tracki plan_upgrade Builds an ordered, source-backed upgrade plan for one npm package - composes check_breaking_changes, get_migration_recipes, get_api_diff, and (if related_packages is given) check_compatibility. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-08-02T15:00:30.764Z","methodology_version":"trust-v1"},{"dimension":"security","metric":"sensitive_capabilities_declared","status":"concern","value_text":"check_breaking_changes, get_migration_recipes, register_webhook_subscription, list_webhook_subscriptions","evidence":"4 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: check_breaking_changes, get_migration_recipes, register_webhook_subscription, list_webhook_subscriptions. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":4,"observed_at":"2026-08-02T15:00:30.764Z","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":"2026-08-02T15:00:30.764Z","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."}