Opencode

Opencode is a multi-provider coding agent with configurable provider endpoints. You can route requests through naxxen by setting custom base URLs in Opencode's config.

Configuration

Edit your Opencode config file (usually ~/.config/opencode/config.json or opencode.json in your project root).

Set the provider base URL to your naxxen endpoint with your key in the path:

OpenAI provider

{
  "providers": {
    "openai": {
      "apiKey": "sk-proj-YOUR_OPENAI_KEY",
      "baseUrl": "https://api.naxxen.ai/nxn-sk-YOUR_NAXXEN_KEY"
    }
  }
}

Anthropic provider

{
  "providers": {
    "anthropic": {
      "apiKey": "sk-ant-YOUR_ANTHROPIC_KEY",
      "baseUrl": "https://api.naxxen.ai/nxn-sk-YOUR_NAXXEN_KEY"
    }
  }
}

Via environment variables

If Opencode reads base URLs from environment variables:

export OPENAI_BASE_URL="https://api.naxxen.ai/nxn-sk-YOUR_NAXXEN_KEY"
export ANTHROPIC_BASE_URL="https://api.naxxen.ai/nxn-sk-YOUR_NAXXEN_KEY"

Check Opencode's documentation for the exact environment variable names it supports.

How it works

The setup is identical to other integrations:

1. Opencode sends requests to https://api.naxxen.ai/nxn-sk-YOUR_KEY/...
2. naxxen strips the key, compresses the prompt, forwards to the real provider
3. The response streams back through naxxen to Opencode

Your provider API key is sent in standard headers and forwarded unchanged.

Verify

Make a request through Opencode and check your dashboard for compression stats.

Set up with an AI agent

Copy this prompt and give it to your AI coding agent:

Read https://docs.naxxen.ai/llms.txt and configure Opencode to use
naxxen for prompt compression. My naxxen key is nxn-sk-YOUR_KEY.
Set the provider base URLs in the Opencode config.