JetBrains releases ThinkRail, an open-source agentic IDE built on git worktrees and spec graphs

·2026.10.24 17:08

Key point

The Apache-2.0 licensed tool runs the pi coding agent in-process across isolated workspaces, available for macOS, Windows, and Linux.

JetBrains InnovationHub released ThinkRail, an open-source agentic IDE that pairs the pi coding agent with isolated git worktree workspaces.
The tool uses a spec-first architecture where a connected graph of spec files serves as ground truth for the agent to read, search, and maintain.
ThinkRail acts as a thin host, running the pi engine in-process to manage models, skills, and cost while providing a UI with Monaco editor tabs, live git diffs, and scoped terminals.
Available for macOS (Apple Silicon), Windows x64, and Linux (Ubuntu 24.04+), the tool supports multiple concurrent agent sessions per workspace with live token and cost tracking.

This summary was generated automatically by AI. Check the original for the author's claims and context. Copyright belongs to the original author.

Our guide explains how the AI works. Report summary errors, attribution issues, or removal requests via Contact.