{"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":"2026-07-18T03:10:52.643Z","server":{"name":"money.barker/stablecoin-yield","title":null,"description":"Barker: real-time stablecoin yield index + AI advisor + non-custodial deposit/redeem (x402 paid).","version":"1.0.1","remote_url":"https://mcp.barker.money/mcp","repo_url":"https://github.com/YBSbarker/barker-stablecoin-skills"},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":1068,"tool_count":11,"probed_at":"2026-07-15T02:30:34.806Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 1068ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo barker-mcp@0.1.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 11 tools e.g. \"barker_defi_vaults\"; 11/11 described, 11/11 fully-typed schemas, median description 249 chars"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 1068ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 1.0.0; namespace money.barker 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":"unaudited","observations":[],"response_benchmarks":[],"reviewed_field_reports":[],"interpretation":"Dimensions are independent; missing evidence is not a pass; field reports are qualitative, moderated and never votes."}