{"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":"2026-10-03T01:53:53.655Z","server":{"name":"io.github.greencore-solutions/a2a-grocery","title":"A2A Grocery — the agentic hub for retail grocery procurement","description":"A2A + MCP hub for retail grocery procurement — 20 markets on the SCHEMA algo record. Trade only.","version":"1.0.1","remote_url":"https://mcp.a2a-grocery.ai/mcp","repo_url":"https://github.com/greencore-solutions/a2a-grocery"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":88,"tool_count":19,"probed_at":"2026-10-02T21:31:00.745Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 88ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo a2a-grocery@1.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 19 tools e.g. \"resolve_jurisdiction\"; 19/19 described, 19/19 fully-typed schemas, median description 249 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 88ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 1.0.1; namespace io.github.greencore-solutions 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: nner, parent group, channel discounter · e-commerce · local · in-store · traditional, local format, cited POS count or NULL, buyer desk by department) with their claim status — verified first, then claimed, then listed | n the shelf of record, product URLs read live at load, POS counts where the banner record carries a cited one) once gate_transaction has answered allow (decision_id). No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-02T21:31:00.745Z","methodology_version":"trust-v1"},{"dimension":"security","metric":"sensitive_capabilities_declared","status":"concern","value_text":"resolve_actor","evidence":"1 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: resolve_actor. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":1,"observed_at":"2026-10-02T21:31:00.745Z","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":"2026-10-02T21:31:00.745Z","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."}