The IDE MCP server took a new port and token in every run, so configured HTTP clients and port forwards broke at each restart; every MCP request brought the window to the front; and an agent's edits were announced as refactorings. - Settings › Agents › IDE MCP Server: Use a fixed port (on by default, 26371) with a fallback to a free port when it is in use or reserved, reported in Status; Keep the token (off by default) stores the bearer token in the app data, readable by this user only, with Regenerate Token. Changing either restarts the server. Access control is otherwise unchanged (127.0.0.1, bearer token, origin and host checks). - Only confirmations, which wait for the user, raise the window. - Agent edits stay undoable (Local History point for multi-file edits) but are not announced as refactorings. Co-authored-by: guoyucode <29471644+guoyucode@users.noreply.github.com>
The IDE you know, rebuilt in Rust.
Download · Docs · Benchmark · Plugins · Community · Sponsor
https://github.com/user-attachments/assets/234dd54c-1255-4b3a-b35c-533d78d737c0
OpenIDEA brings the IntelliJ IDEA way of working — its keymap, its tool windows, its search-everything habits — to a native app with a Rust core.
Editor, code insight, debugger, Git, terminal, database and HTTP clients, for 60+ languages. Builds for macOS, Windows and Linux.
Benchmark
Opening freqtrade (Python, ~770 files) with warm caches, median of 5 runs:
| OpenIDEA | IntelliJ IDEA 2026.2.3 | |
|---|---|---|
| Window with the project | 0.9 s | 3.1 s |
| Ready (CPU settled) | 1.1 s | 13.2 s |
| Memory (USS, all processes) | 169 MB | 2011 MB |
| CPU time until ready | 2.4 s | 47.9 s |
| Idle CPU | 4 % of a core | 7 % of a core |
| Quit | 0.3 s | 5.9 s |
A release build of OpenIDEA from main and IDEA with default settings and plugins, on
Windows 11, 32-core AMD, 62 GB RAM.
IDEA analyses Python more deeply, so "ready" doesn't mean the same work on
both sides. Both are measured from the outside, the same way: see
perf/compare to run it on your machine and projects.
Plugins
Plugins add actions, completion, quick fixes, tool windows, custom editors, themes, file icons and languages. They run as sandboxed WebAssembly components; themes, icon themes and languages need no code at all.
Install them from Settings › Plugins, or start your own with
openidea-plugin new — see Writing OpenIDEA plugins and
the official plugins. The plugin API is still a preview.
Community
-
Discord — questions, feedback and release news.
-
WeChat group — scan to join:
-
Contributing: see CONTRIBUTING.md and the contributor docs.
Sponsor
If OpenIDEA saves you time, you can support its development with Alipay or WeChat Pay.
![]() Alipay |
![]() WeChat Pay |
License
Apache 2.0. Bundled third-party assets are listed in THIRD_PARTY_LICENSES.md.
Not affiliated with JetBrains. IntelliJ IDEA is a trademark of JetBrains s.r.o.

