● Covered by 1 source · 2 reportsMedium impact1 neutral1 positive
JetBrains InnovationHub releases ThinkRail, an agentic IDE with git worktree integration
Key points
- ThinkRail is an open-source agentic IDE from JetBrains InnovationHub.
- It uses git worktrees for isolated development environments.
- Projects are local git repositories, with workspaces as worktrees.
- Agents operate within their own branches and current working directories.
- ThinkRail learns from user interactions and project specifics.
- ThinkRail uses "living specs" and reusable skills.
- ThinkRail aims to automate development tasks and integrate with existing workflows.
- ThinkRail has a rich interface around the pi coding agent.
- ThinkRail plans to add full extension support.
- ThinkRail workspaces settle onto a per-project shelf when finished or dormant.
Introduction of ThinkRail
JetBrains InnovationHub has released ThinkRail, an open-source agentic IDE under the Apache-2.0 license. ThinkRail is designed to learn and improve over time through user interaction. It is available for macOS, Windows, and Linux, with installation via command-line scripts.
Agentic Development with Git Worktrees
A core feature of ThinkRail is its integration with git worktrees. This allows developers to create isolated workspaces, each with its own git branch and current working directory. This isolation prevents agents from interfering with the main codebase and enables parallel development efforts without conflicts.
Users can run multiple agents simultaneously, with each agent's changes confined to its specific branch. This approach keeps the main branch clean until changes are explicitly merged.
Spec-First Approach and Agent Architecture
ThinkRail adopts a 'spec-first' design, where a graph of spec files resides alongside the code. The integrated coding agent reads, searches, and maintains this spec graph using dedicated tools, ensuring that the project's intent is preserved across sessions.
The IDE operates with a 'thin host' and a 'real engine' architecture. The 'pi coding agent' runs in-process, managing models, skills, compaction, and cost, while ThinkRail handles the workspace, editor, and communication, without generating prompts behind the scenes.
Project and Workspace Management
In ThinkRail, any local git repository can be a 'project'. 'Workspaces' are git worktrees created from these projects, allowing for quick creation and disposal. This system supports multiple parallel lines of development within a single repository.
Each workspace maintains its own branch, current working directory, files, diffs, terminals, and chats. Users can switch between workspaces instantly without reloading, and changes do not leak between them. This facilitates merging desired changes and discarding others without impacting the main repository.
Updates
- ThinkRail learns from user interactions and project specifics.
- ThinkRail uses "living specs" and reusable skills.
- ThinkRail aims to automate development tasks and integrate with existing workflows.
- ThinkRail has a rich interface around the pi coding agent.
- ThinkRail plans to add full extension support.
- ThinkRail workspaces settle onto a per-project shelf when finished or dormant.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
The daily brief
One email each morning: the day's tech stories, clustered across outlets and summarized. No account needed.
One email a day. Unsubscribe in one click, any time.
Today's brief
Spend a few minutes, get the whole day. Every topic's top stories in one hands-free rundown — listen, watch, or read the transcript.
▶ Play today's brief
New every morning, and the back catalogue is archived by date.
Primary sources
GitHub JetBrains/thinkrail GitHub cmc_internal/api GitHub github/collect GitHub _private/browser GitHub get-started/accessibility GitHub open-source/sponsorsHow outlets covered it
JetBrains has launched ThinkRail, an agentic IDE designed to learn from user interactions and project specifics. The IDE uses "living specs" and reusable skills to adapt and improve over time, aiming to automate development tasks and integrate with existing workflows.
JetBrains InnovationHub has open-sourced ThinkRail, an agentic Integrated Development Environment (IDE) designed to improve with use. ThinkRail integrates with git worktrees, allowing developers to run multiple agents in parallel with isolated branches and dedicated workspaces.