{"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":"2026-09-10T02:05:49.519Z","server":{"name":"cc.accrue/mcp","title":null,"description":"Stablecoin Yield Index (SYX) and live USDC vault APYs across Ethereum, Base, Arbitrum.","version":"2.0.0","remote_url":"https://accrue.cc/mcp","repo_url":null},"operational_grade":{"grade":"A","score":97,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":251,"tool_count":14,"probed_at":"2026-09-05T21:00:45.930Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 251ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2024-11-05, serverInfo accrue-mcp@2.0.0"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 14 tools e.g. \"get_syx_value\"; 14/14 described, 14/14 fully-typed schemas, median description 328 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 251ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 2.0.0; namespace cc.accrue 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: en the user asks \"what is the current stablecoin yield\" or \"what is SYX right now\" or any benchmark/reference-rate question about USDC yield. No response-level citation benchmark has verified this claim yet.","source_type":"live_probe","sample_size":null,"observed_at":"2026-09-05T21:00:45.930Z","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":"2026-09-05T21:00:45.930Z","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."}