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Claude Code and coding tools

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Claude Code

Set four environment variables before running claude:
ANTHROPIC_BASE_URL points Claude Code at Radium instead of Anthropic. ANTHROPIC_AUTH_TOKEN is your Radium API key. ANTHROPIC_MODEL is the default model for long reasoning tasks. ANTHROPIC_SMALL_FAST_MODEL is used for summaries, background tasks and quick completions.

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Cursor

Configure Cursor to use Radium by setting a custom OpenAI-compatible provider:
  1. Open Cursor Settings > Models
  2. Add a custom provider with base URL https://api.radium.cloud/v1
  3. Enter your Radium API key
  4. Add the model names hal-1.0, clarke-1.0 and tycho-1.0

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One-command setup

Add this alias to your .bashrc or .zshrc:

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Continue

Continue.dev works with Radium via its OpenAI-compatible provider. See the Continue guide for full configuration.

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Cline

Cline supports custom OpenAI-compatible providers. See the Cline guide for VS Code settings.

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Aider

Aider supports custom base URLs via the --model flag. See the Aider guide for .aider.model.settings.yml configuration.

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Known limitations

  • Tool definitions must match the format expected by the model tier. Hal 1.0 and Clarke 1.0 support full tool calling. Tycho 1.0 supports tool calling for classification and routing use cases.
  • Vision input is supported on hal-1.0 and clarke-1.0. Not supported on tycho-1.0.