thinkrail: Agent IDE isolated with git worktree

ThinkRail, developed by JetBrains, is an agentic IDE centered around the pi coding agent. Unlike traditional IDEs, it isolates the environment where the agent works using git worktree, allowing code to be generated in parallel without affecting the main checkout. You can directly manage the workflow, such as converting completed branches into PRs or deleting them.

It provides a 'living specs' graph based on SPEC.md to help the agent maintain project knowledge. The agent reads and modifies this spec, ensuring that intent is preserved even after a session ends. Additionally, you can load and reuse Agent Skills used by other agents, making it easy to migrate existing workflows.

It offers a real IDE environment equipped with the Monaco editor, a terminal, and a file tree. UI changes proposed by the agent can be reviewed by comparing before/after mockups within the chat window. It includes security and control features, such as requesting user confirmation before non-read-only tool calls when integrated with an MCP server.

It can be used by connecting to JetBrains AI or your own credentials and is available in two forms: a desktop app and a CLI. It supports English and Simplified Chinese by default and can be extended to other languages by adding locale files. It is suitable for developers who want to safely perform complex agent tasks in an isolated environment.