{"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":"2026-09-08T07:24:20.026Z","server":{"name":"io.carbonguru/carbonguru","title":"CarbonGuru","description":"Carbon footprints for products, carts, receipts and files — with one-step offsetting.","version":"2.28.2","remote_url":"https://carbonguru.io/mcp","repo_url":null},"operational_grade":{"grade":"D","score":57,"provisional":1,"reachable":1,"auth_state":"auth-wellbehaved","latency_ms":665,"tool_count":null,"probed_at":"2026-09-08T01:30:14.472Z","evidence":[{"criterion":"reachability","points":18,"max":25,"evidence":"HTTP 401 in 665ms — auth required; WWW-Authenticate present: \"Bearer realm=\"CarbonGuru\", resource_metadata=\"https://carbonguru.io/mcp/.well-known/oauth-protected-resource\"\""},{"criterion":"protocol","points":0,"max":15,"evidence":"handshake not reachable behind auth — unverified"},{"criterion":"tooling","points":0,"max":0,"evidence":"auth-gated — tooling unverifiable, excluded from score (grade marked provisional)"},{"criterion":"latency","points":7,"max":10,"evidence":"initialize round-trip 665ms"},{"criterion":"provenance","points":12,"max":15,"evidence":"description present; no repository URL; version 2.28.2; namespace io.carbonguru matches endpoint/repo"}],"protocol_access":"auth-wellbehaved"},"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":"auth-wellbehaved","evidence":"Live protocol probe observed auth_state=auth-wellbehaved. This describes discovery/access behavior; it is not by itself a vulnerability finding.","source_type":"live_probe","sample_size":null,"observed_at":"2026-09-08T01:30:14.472Z","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."}