{"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":"2026-09-08T15:03:37.839Z","server":{"name":"io.github.peculiar-systems/invoicein","title":null,"description":"Any EU e-invoice (XRechnung, ZUGFeRD/Factur-X, Peppol, FatturaPA, KSeF) → EN 16931 JSON + fix hints","version":"0.1.0","remote_url":"https://invoicein-api.peculiar.systems/mcp","repo_url":"https://github.com/peculiar-systems/invoicein-examples"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":154,"tool_count":5,"probed_at":"2026-09-08T10:15:21.714Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 154ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo invoicein@0.1.1"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 5 tools e.g. \"read_invoice\"; 5/5 described, 5/5 fully-typed schemas, median description 914 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 154ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.1.0; namespace io.github.peculiar-systems 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: e id, type, issue and due date, currency, seller and buyer name / VAT id / country, buyer and order reference, net / tax / gross / due totals, IBAN, BIC, remittance info, detected format and profile; with level=lines each row adds line id, item name, seller item id, qu. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-09-08T10:15:21.714Z","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":"2026-09-08T10:15:21.714Z","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."}