MCP Config & JSON-RPC Session Inspector
Inspect MCP stdio or Streamable HTTP configuration and captured JSON-RPC messages against the stable 2025-11-25 lifecycle and tool schema rules.
Runs locally in your browserStable baseline: MCP 2025-11-25MCP input
Inspect configuration and protocol shape without connecting
The checker follows the stable 2025-11-25 lifecycle and tool fields. It recognizes stdio and Streamable HTTP configuration patterns, but does not prove interoperability, trust a tool description, or implement draft release-candidate behavior.