MCPJam/inspector
Test & Debug MCP servers, ChatGPT apps, and MCP Apps (ext-apps)
This tool helps developers building applications for large language models (LLMs) to test and debug their work locally. It takes your app's code or an MCP server's configuration and provides a testing environment that emulates how the app would run in real-world scenarios, including widget display and chat interactions. Developers who create ChatGPT apps or other applications using the Model Context Protocol (MCP) will find this useful for speeding up their development cycle.
1,798 stars. Actively maintained with 175 commits in the last 30 days. Available on npm.
Use this if you are developing ChatGPT apps, MCP apps, or MCP servers and need a comprehensive local environment to test features like widgets, OAuth flows, and LLM interactions without relying on external services or subscriptions.
Not ideal if you are an end-user of ChatGPT or other LLM applications and are not involved in their development.
Stars
1,798
Forks
199
Language
TypeScript
License
—
Category
Last pushed
Mar 13, 2026
Commits (30d)
175
Dependencies
74
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