modelcontextprotocol/inspector
The MCP Inspector provides a visual testing tool for Model Context Protocol servers.
About modelcontextprotocol/inspector
MCP Inspector is a developer tool for inspecting Model Context Protocol (MCP) servers. It ships as the package @modelcontextprotocol/inspector and runs through the mcp-inspector binary, with mcpdo as a second binary in the same package. Development setup requires Node >=22.19.0.
Pricing is not clearly stated.
Key features
- Web single-page app with Node backend for inspecting servers
- Scriptable command-line client for automation, CI and agent feedback loops
- Interactive terminal UI built with Ink
- Experimental mcpdo connection CLI for running many commands against a named connection
Best for: Developers inspecting Model Context Protocol servers.
Watch out for
- On machines with no keychain, secrets save to ~/.mcp-inspector/secrets.json unencrypted unless a key is supplied.
modelcontextprotocol/inspector at a glance
- Category
- Development › Developer Tools
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Details verified
- Oct 22, 2026 · Official source
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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