DevPass Code Integration

DevPass Code is a terminal coding agent that connects to Halfbill out of the box.

Install

pnpm add -g devpass-code
devpass-code --version

See the project repository for other installation options.

Connect Halfbill

The simplest setup uses an existing Halfbill API key:

export LLMGATEWAY_API_KEY="your_api_key"

Create your key in the dashboard. Alternatively, run devpass-code auth login, choose the Halfbill option that matches your key (pay-as-you-go or Halfbill Code plan), and follow the browser-login or key-entry flow.

Browser login creates a credential and returns it to the tool through a local callback. If you have reached your organization's active-key limit, manage your keys in the dashboard before retrying.

Choose a model

Place a devpass-code.json in your project:

{
	"model": "llmgateway/claude-sonnet-5"
}

Then launch the agent:

cd your-project
devpass-code

You can also select the model with --model llmgateway/claude-sonnet-5 or use the model picker. Browse the catalogue for other models.

The llmgateway/ prefix identifies the agent's provider. The remaining part is the canonical Halfbill model ID, which also works with a Halfbill Code plan key.

Verify the connection

Open a small project and ask the agent to read a file, make a change, and run its tests. Review the diff and test output, then check the request in your Halfbill dashboard. Choose other models from the catalogue.

Troubleshooting

Check that LLMGATEWAY_API_KEY is available to the process and that the model ID matches the picker. If a project opens with an unexpected model, check its devpass-code.json and pass --model explicitly.

DevPass Code tags requests with x-source: devpass-code for attribution in your dashboard.