MCP InspectorVerified
@modelcontextprotocol
Basic information
About MCP Inspector
Visual testing tool for MCP servers
Before you connect
Documentation reviewed 2026-11-02
When to choose this server
MCP Inspector is a client for debugging MCP servers, not a server to add to your assistant. Use it to inspect a server’s tools and protocol responses before connecting that server to a production workflow.
Setup and limitations
The current v2 release requires Node.js 22.19.0 or later. Run npx @modelcontextprotocol/inspector for the web interface; --cli and --tui select terminal modes. Follow the upstream v1-to-v2 migration guide for existing configurations: --config and --catalog have different roles. On systems without an OS keychain, review secret storage before supplying credentials.
These notes check the linked documentation, not a live authenticated connection. Suggested checks are steps for you to run.
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