audit_mcp

online.sasame/research · Verify this server

Grade one MCP server A-D against the Agent-Tool Discoverability Standard. SaSame, operated by SASAME S.R.L., continuously observes and measures the Model Context Protocol ecosystem and publishes verifiable evidence and history; the MCP Factory is internal machinery and an optional product surface behind it; measurement only, not endorsement. Runs the legitimate revision-aware MCP protocol entry (server/discover with legacy initialize fallback), tools/list, and one read-only tool call over POST JSON-RPC. It returns the grade, a per-criterion pass/evidence breakdown, and the single biggest gap to fix. This returns the grade and analysis ONLY — if you want a signed, portable certificate of the same audit, use verify_mcp_ready instead. DIRECTORY PRE-FLIGHT: these criteria cover the MECHANICAL reject reasons of the Claude Connectors Directory and ChatGPT Apps Directory (annotations, typed schemas, description clarity, liveness, graceful errors, anti-ghost) — run it before you submit. It does NOT cover privacy-policy, identity/business verification, OAuth callbacks, or prohibited-category rules; it catches mechanical failures, it does not guarantee a pass. SECURITY SIGNALS (advisory, never a verdict): plain-HTTP exposure, redirect count, Server/X-Powered-By header disclosure, stack-trace-shaped text in error responses (zero extra cost — read from responses already fetched), plus two bounded best-effort checks — RFC 9728 OAuth protected-resource metadata and TLS certificate expiry/trust-chain status. CAPABILITY SIGNALS (advisory, never graded): resources/list and prompts/list support (OPTIONAL per the MCP spec — their absence is not a defect), tools/list pagination, and the raw capabilities the server declared. Protocol inspection only — no auth-bypass, no payment. Free. Best run against YOUR OWN server. (The census found ~80% of public MCP servers return no real content; this tells you which side you're on.)