{"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":"2026-08-30T16:56:49.810Z","server":{"name":"io.github.spruikco/send16-mcp","title":null,"description":"Email for AI agents: send mail, manage contacts, automations & webhooks. Zero-DNS first send.","version":"0.5.8","remote_url":"https://mcp.send16.com/mcp","repo_url":"https://github.com/spruikco/send16-mcp"},"operational_grade":{"grade":"A","score":100,"provisional":0,"reachable":1,"auth_state":"open","latency_ms":137,"tool_count":79,"probed_at":"2026-08-29T18:45:35.044Z","evidence":[{"criterion":"reachability","points":25,"max":25,"evidence":"HTTP 200, initialize accepted in 137ms"},{"criterion":"protocol","points":15,"max":15,"evidence":"valid JSON-RPC initialize result, protocolVersion 2025-06-18, serverInfo send16@0.5.13"},{"criterion":"tooling","points":35,"max":35,"evidence":"tools/list OK: 79 tools e.g. \"whoami\"; 79/79 described, 79/79 fully-typed schemas, median description 94 chars"},{"criterion":"latency","points":10,"max":10,"evidence":"initialize round-trip 137ms"},{"criterion":"provenance","points":15,"max":15,"evidence":"description present; repository linked; version 0.5.8; namespace io.github.spruikco 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":"sensitive_capabilities_declared","status":"concern","value_text":"send_email, delete_topic, delete_action, delete_audience, delete_contact, delete_campaign, delete_webhook, regenerate_webhook_secret","evidence":"8 discovered tool(s) advertise potentially state-changing or privileged capabilities. Tool names: send_email, delete_topic, delete_action, delete_audience, delete_contact, delete_campaign, delete_webhook, regenerate_webhook_secret. Classification is description-based and does not prove exploitability.","source_type":"live_probe","sample_size":8,"observed_at":"2026-08-29T18:45:35.044Z","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":"2026-08-29T18:45:35.044Z","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."}