MCPJam Inspector

Test + develop ChatGPT apps and MCP apps (ext-apps) locally

Visit site ↗Alternativestop 5% of January 2026

What it does

MCPJam inspector is the local testing tool for ChatGPT apps and MCP servers. Build your apps locally with MCPJam's widget emulator and test against any LLM in the playground. Inspect your MCP server’s tools, resources, prompts, and OAuth flows. No more ngrok or ChatGPT subscription needed.

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