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Connect your tool

Choose Claude Code, ChatGPT, Cursor IDE, or another harness, and follow its setup steps.

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Who Nexus is for

  • Developers: a Nexus CLI command adds Nexus Auto to your tool’s model picker next to the models you use today. A second command restores your original settings.
  • Team admins: connect an Anthropic, OpenAI, or Amazon Bedrock account once for the whole team, and view usage by model and by user. On Enterprise, admins can also cap each person’s spend on Fireworks models.
Nexus has its own app at nexus.fireworks.ai, with Pro, Team, and Enterprise plans. A Nexus account is separate from a Fireworks platform account.

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How Nexus works

Your tool connects through Nexus Desktop, Nexus CLI, an SDK, or an LLM gateway. By default, requests use Nexus Auto (auto), which picks a model for each turn: a Fireworks open model, or an Anthropic or OpenAI model on your own account if you’ve connected one. On Enterprise, you can also choose a specific open model. To connect your own agent, use APIs and SDKs. To connect a gateway, use LLM Gateways.