{"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":"2026-08-18T02:25:51.653Z","server":{"name":"org.x402card/freeland-esim","title":"x402card: Virtual Cards + Freeland eSIM","description":"Discover x402 virtual cards and prepaid Freeland travel eSIMs paid with native USDC on Base.","version":"0.1.3","remote_url":"https://api.x402card.org/mcp","repo_url":"https://github.com/nuanu-ai/x402card"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":62,"tool_count":10,"probed_at":"2026-08-17T23:30:34.454Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 62ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo x402card@0.1.3"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 10 tools e.g. \"x402card.get_agent_contract\"; 10/10 described, 10/10 fully-typed schemas, median description 77 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 62ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.1.3; namespace org.x402card 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":"claim_verification","metric":"advertised_corpus_scale","status":"unverified","value_text":"3.1 document","evidence":"Advertised corpus-size expression(s) found in public metadata/tool descriptions: 3.1 document. Black-box discovery does not establish corpus coverage; a manifest or sampled benchmark is required.","source_type":"live_probe","sample_size":null,"observed_at":"2026-08-17T23:30:34.454Z","methodology_version":"trust-v1"},{"dimension":"security","metric":"sensitive_capabilities_declared","status":"concern","value_text":"x402card.get_wallet_requirements, x402card.get_install_command","evidence":"2 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: x402card.get_wallet_requirements, x402card.get_install_command. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":2,"observed_at":"2026-08-17T23:30:34.454Z","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":"2026-08-17T23:30:34.454Z","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."}