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MCP Conformance Scanner

Check any MCP server against the spec in seconds.

Point it at a Model Context Protocol server and get a report: what passes, what breaks, and what to fix first, written for an operator to act on. The July 2026 spec revision changed how servers start up, so "it works in one client" is no longer evidence that it works.

Scan a server (opens in a new tab)
Conformance report · mcp.example.com
  • HandshakePass
  • Capability negotiation3 findings
  • Tool schemasPass
  • Resource schemas1 break
  • Overall gradeB−

What it does

  • Handshake, capability, and negotiation checks for session-based servers
  • Tool, resource, and prompt schema validation
  • Prioritized findings written for an operator to act on
  • Shareable report links

How it works

  1. 1Paste a server URL or point the CLI at your local process.
  2. 2We exercise the transport, capability, and schema behavior your server advertises.
  3. 3You get a graded report with prioritized fixes an operator can act on.
  4. 4Share the link with a teammate or drop it into CI when the Action ships.

Who it’s for

Teams shipping or consuming MCP servers who need a production gate rather than a one-client smoke test — especially now that enterprise platforms are publishing tool surfaces by the dozen.

What’s next

  • Core conformance suite — shipped
  • Shareable report links — shipped
  • 2026-07-28 rule pack: server/discover, per-request _meta, routing headers
  • CI GitHub Action

Need a human to read this report?

The report is the start. Advisory turns findings into a plan with owners. Thirty minutes to see if that's worth it.

Talk to ARCBook 30 minutes (opens in a new tab)

A person reads every inquiry, usually replying within two business days.