{"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":"2026-10-20T01:24:27.916Z","server":{"name":"io.github.kasheik3/penny-engine","title":"Penny Engine — Agent Operations","description":"Remote MCP utilities for agents: structured data, commerce checks, and x402 paid API discovery.","version":"0.7.7","remote_url":"https://penny-agent-api-production.up.railway.app/mcp","repo_url":null},"operational_grade":{"grade":"A","score":90,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":240,"tool_count":18,"probed_at":"2026-10-19T20:46:01.174Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 240ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-03-26, serverInfo penny-engine@0.8.6"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 18 tools e.g. \"penny_margin\"; 18/18 described, 18/18 fully-typed schemas, median description 113 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 240ms"},{"criterion":"provenance","points":5,"max":15,"evidence":"description present; no repository URL; version 0.7.7; namespace io.github.kasheik3 does NOT match remote host (expected *.kasheik3.github.io)"}],"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":"claim_verification","metric":"advertised_corpus_scale","status":"unverified","value_text":"50 product","evidence":"Advertised corpus-size expression(s) found in public metadata/tool descriptions: 50 product. Black-box discovery does not establish corpus coverage; a manifest or sampled benchmark is required.","source_type":"live_probe","sample_size":null,"observed_at":"2026-10-19T20:46:01.174Z","methodology_version":"trust-v1"},{"dimension":"security","metric":"sensitive_capabilities_declared","status":"concern","value_text":"penny_capability_router, penny_choose_service","evidence":"2 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: penny_capability_router, penny_choose_service. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":2,"observed_at":"2026-10-19T20:46:01.174Z","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":"2026-10-19T20:46:01.174Z","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."}