mTarsier Open Source MCP Server Manager for AI Clients

There is a debate in the industry right now about MCP. Some people think MCP sucks. Some people think MCP is awesome. But no matter what people think, one thing is clear: adoption is increasing, and there is a major problem. Each AI client stores MCP servers in its own configuration directory and files. So once you start using multiple MCP servers across tools like Claude Desktop, Cursor, VS Code, Codex, OpenCode, or ChatGPT Desktop, managing them usually means jumping between different JSON files across your filesystem. Adding or updating a server often requires making the same change in multiple places, and even small mistakes can quietly break things. That is the problem we are trying to solve. We launched mTarsier, an open-source desktop app and CLI that centralizes MCP configuration management. It can: — detect installed AI clients automatically — show MCP servers and which clients use them — edit configs with JSON validation — back up configs before changes — export .tsr snapshots to reproduce setups — manage everything via a CLI (tsr) Runs locally and supports macOS, Windows, and Linux.