EVREN for the coding tools you already use

What Ülgen does

The coding tools already work well, and EVREN serves capable open-weight models. What is missing is the part in between: signing in, keeping the key safe, accepting the terms, watching the quota, writing the right settings into each tool, and a Turkish interface. Ülgen is that part.

Sign-in in one command

The e-Devlet step cannot be skipped; everything after it is ulgen login. It opens EVREN’s API keys page, asks for the key, shows the terms and saves the key once EVREN has accepted it.

The key stays yours

It is kept in the operating system’s credential store (or a file only you can read), and never written into a tool’s settings file, printed or logged. Claude Code never receives it. See Your key stays yours.

Each tool set up for EVREN

ulgen setup writes the right settings into each tool. Every changed file is backed up first, --dry-run shows the change without writing it, and --remove undoes it.

The quota in view

ulgen status shows how much of today’s quota is left, and the models.

Says what is wrong

ulgen doctor checks the key, EVREN and every tool, and says what to do about what is wrong.

Turkish and English

Every command follows the system language, Turkish or English.

Install

Linux and macOS:

curl -fsSL https://raw.githubusercontent.com/mftnakrsu/ulgen/main/scripts/install.sh | sh

Windows (PowerShell):

irm https://raw.githubusercontent.com/mftnakrsu/ulgen/main/scripts/install.ps1 | iex

Pardus, Debian and Ubuntu packages, building from source and checking a download are on the install page.

You need an EVREN account (sign-in is through e-Devlet) and one of the supported tools installed. Then run:

ulgen

On the first run Ülgen signs you in, finds the tools you have installed, asks which one you want, sets it up for EVREN and starts it. Later runs start that tool straight away. What each command does is under Using Ülgen.

Supported tools

Tool	ulgen setup <name>	What setup writes
Qwen Code	qwen	The EVREN models in settings.json
opencode	opencode	The EVREN provider in opencode.json
Codex CLI	codex	A profile file of its own, evren.config.toml; your config.toml is never written
Claude Code	claude	Only a skill for EVREN workers; ulgen run claude needs no settings file

Claude Code talks to a translator inside Ülgen on your own machine. Anthropic does not support using Claude Code with other models; this and the other known limits are on the Using Ülgen page.

Documentation

InstallThe install scripts, .deb and .rpm packages, building from source, checking a download and removing Ülgen.

Using ÜlgenThe first run, the commands, the supported tools, the key and the known limits.

Full guide in TurkishEVREN'i kodlama araçlarınızda kullanma: every step and option, in Turkish.

EVRENEVREN's API, terms, models and limits, as observed, with the dates.

Source and releases

Ülgen is free software under the AGPL-3.0-only license. The code, the issues and the releases are on GitHub. The name comes from Ülgen, the creator deity of Turkic mythology; the command is ulgen.

Source codeThe repository, with the design notes and how to contribute.

ReleasesArchives for Linux, macOS and Windows, .deb and .rpm packages, and signed checksums.

Ülgen is an independent, non-commercial project. It is not affiliated with SSB, EVREN or the makers of the tools it sets up.