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MCPJam: Open-Source Postman for MCP
Hey y’all, my name is Matt. I maintain the MCPJam inspector, open source Postman for MCP servers. It’s a fork of the original inspector with upgrades like LLM playground, multi-connection, and better design.
If you check out the repo, please drop a star on GitHub. We’re also building an active MCP dev community on GitHub.
New features
Ollama support in the LLM playground. Now you can test your MCP server against local models like Deepseek, Mistral, Llama, and many more. No more having to pay for tokens for testing.
Chat with all servers. LLM playground defaults to accepting all tools. You can select / deselect the tools you want fed to the LLM, just like how Claude’s tool selection works.
Smoother / clearer server connection flow.
Please consider checking out and starring our open source repo:
https://github.com/MCPJam/inspector
I’m building an active MCP dev community
I’m building a MCPJam dev Discord community. We talk about MCPJam, but also share general MCP knowledge and news. Active every day. Please check it out!
https://discord.com/invite/Gpv7AmrRc4
- We built the first MCP client with Ollama support
- Test your MCP servers with MCPJAM – Elicitation support
- Show HN: I built a better MCP inspector to debug MCP servers
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A note from our sponsor - Stream
getstream.io | 17 Jul 2025
Stats
MCPJam/inspector is an open source project licensed under GNU General Public License v3.0 or later which is an OSI approved license.
The primary programming language of inspector is TypeScript.

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