Jilebi

Jilebi is a plugin runtime that converts Model Context Protocol (MCP) servers into secure, sandboxed plugins. Unlike traditional MCP servers that require direct network and system access, Jilebi plugins run in a secure sandbox with explicit permission controls, making them safer and easier to manage.

I wanted to use MCP servers but were concerned they would steal my ssh keys. Setting up and using each MCP server with my editor was also a pain. I just wanted to simplify this whole setup, and created jilebi to do that.

Absolutely! Jilebi makes plugin development simple by focusing on tools, resources, and prompts rather than server abstractions. You can create plugins using JavaScript/TypeScript, and Jilebi handles the MCP protocol implementation. Check our documentation for plugin development guides and examples.

Currently no, jilebi is not open source. It is free to download and use in stdio mode. The plugins I write for it are open source and can be found on https://github.com/jilebi-plugins. I may flesh out jilebi more and provide the remote capability as a service in the future where you don't need to download jilebi to use it.

Docker is a pretty good choice, it grants isolation and you can configure permissions and envs within a docker compose file. I felt containers take up more system resources, and can limit how many MCPs you can run at a time.

When I was looking for a solution, I came across hyper-mcp which runs MCPs as wasm modules plugged in via extism. You can also try Wassette which Microsoft released while I was creating Jilebi. Both are great options if you want to avoid using Docker or full MCP servers. They both are open source.

Getting started is easy! Download Jilebi for your platform from our download page, install it, and start adding plugins with jilebi plugins add [plugin-name]. Check out our quick start guide for detailed setup instructions.