Windows
x64
Coming soon
Available in pilot
Call OneNexus-hosted models from
the agents you already use
A desktop app that connects the AI agents you already use to OneNexus-hosted models. You keep your existing providers, and can call OneNexus-hosted models too.
Codex Desktop, Codex CLI, and VS Code are supported today. More agents are coming.
What it does
Keep your agents. Add OneNexus-hosted models.
Coding, QA, slides, documents — keep running all of them in the agents you have. Composer points them at OneNexus-hosted models instead of your existing providers, converting protocols locally, keeping the OneNexus catalog current, and recording local usage estimates.
Codex Desktop / VS Code
OpenAI Responses API
Nexus Composer Proxy
Protocol conversion, model mapping, provider routing, usage statistics
OneNexus
Managed Platform model catalog
Getting started
Set up Nexus Composer in four steps
Install the app, connect a Platform API key, then point your agent at OneNexus. Composer handles the routing from there.
1
Install Nexus Composer, then add your OneNexus Platform API key.
2
Choose your agent in Composer and switch it to OneNexus.
3
Restart your agent so it picks up the change.
4
Open a new chat, choose a OneNexus model, and send a test message.
Keep Nexus Composer running while the selected client is routed through OneNexus.
Follow the full install, client setup, verification, and rollback guide.
Available in pilot
Get Nexus Composer
The macOS installer for Apple Silicon is available now. Windows and Linux (Ubuntu 24.04+) are coming soon.
Version
Checking the latest release…