{"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":"2026-10-26T22:41:01.106Z","server":{"name":"lat.rta.karta/guard","title":"KARTA — spend control for AI agents","description":"Task envelope, budget ledger, kill switch and signed receipts for agents that pay.","version":"0.1.0","remote_url":"https://karta.rta.lat/mcp","repo_url":"https://github.com/mrpkk/onchain-ai-agent"},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":832,"tool_count":1,"probed_at":"2026-10-26T17:48:24.467Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 832ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo karta-spend@0.1.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 1 tools e.g. \"check_spend\"; 1/1 described, 1/1 fully-typed schemas, median description 139 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 832ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.1.0; namespace lat.rta.karta 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":"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":"2026-10-26T17:48:24.467Z","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."}