{"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":"2026-08-09T03:34:30.464Z","server":{"name":"eu.sendletter/sendletter","title":"SendLetter","description":"Send real, printed letters by post across Europe. Requires a free account; quote before sending.","version":"1.0.0","remote_url":"https://sendletter.eu/api/mcp","repo_url":"https://github.com/gertsnijder/sendletter-node"},"operational_grade":{"grade":"F","score":15,"provisional":0,"reachable":0,"auth_state":"unreachable","latency_ms":null,"tool_count":null,"probed_at":"2026-08-09T01:15:08.510Z","evidence":[{"criterion":"reachability","points":0,"max":25,"evidence":"fetch failed: Invalid redirect value, must be one of \"follow\" or \"manual\" (\"error\" won't be implemented since it does not make sense at the edge; use \"manual\" and check the r"},{"criterion":"protocol","points":0,"max":15,"evidence":"no handshake"},{"criterion":"tooling","points":0,"max":35,"evidence":"unreachable — no tooling to assess"},{"criterion":"latency","points":0,"max":10,"evidence":"not measurable"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 1.0.0; namespace eu.sendletter matches endpoint/repo"}],"protocol_access":"unreachable"},"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":"authentication_boundary","status":"observed","value_text":"unreachable","evidence":"Live protocol probe observed auth_state=unreachable. This describes discovery/access behavior; it is not by itself a vulnerability finding.","source_type":"live_probe","sample_size":null,"observed_at":"2026-08-09T01:15:08.510Z","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."}