ForeverVM

lastmod 2025-12-02created 2025-03-073 edits

Securely run AI-generated code in stateful sandboxes that run forever.

A sandbox that safely runs and persists AI-generated code

About

• A code execution API that safely runs arbitrary Python code in a remote sandbox and returns the result
• Unlike typical code interpreters, it has no concept of sessions, so state never expires
• Uses resources efficiently by saving a memory snapshot when the sandbox is idle and restoring it when needed

How does it work?

• Once you create a ForeverVM machine, you can interact with it through a REPL (Read-Eval-Print Loop) interface
• While the machine is active, it is assigned to an available worker
• When the sandbox goes idle, a memory snapshot is saved and it is detached from the worker
• While idle, it only takes up storage space and uses no compute or memory resources
• When it receives a new execution command, it is restored from the saved state and assigned to a new worker.

This process is transparent to API users, and ForeverVM behaves like a REPL that is always ready to run

Integrates with Claude Desktop, Goose, and more

• ForeverVM can be used as a Model Context Protocol (MCP) server
• This lets you add ForeverVM as a tool in Claude Desktop and other MCP clients

See also

• VM
• LLM
• AI
• Docker
• Model Context Protocol (MCP)
• ERA - A local sandbox for safely running AI-generated code

Favorite site

• ForeverVM: The sessionless code interpreter
• Github - jamsocket/forevervm