Roo Code

Reviewed by Proof · Updated

Definition

Roo Code is an AI coding agent for VS Code that can use luv13 through its OpenAI Compatible provider.

Key takeaways

  • In Roo Code's settings, set API Provider to OpenAI Compatible.
  • Set Base URL to https://api.luv13.ai/v1, paste your luv13 key into API Key, and pick a model id such as luv13/glm-5.3-flash.
  • Roo Code uses native tool calling only. A model that can't do OpenAI-style tool calls won't work with it.
  • Settings names on this page come from Roo Code's official docs.

Setup

  1. Install the Roo Code extension in VS Code.
  2. Open Roo Code's settings panel.
  3. Set API Provider to OpenAI Compatible.
  4. Fill in:
    • Base URL: https://api.luv13.ai/v1
    • API Key: your luv13 key
    • Model: luv13/glm-5.3-flash, or another id from the live list
  5. Save and start a task.

Tool calling matters here

Roo Code sends its tools using OpenAI's tools format and expects the model to answer with tool calls. If a model or provider doesn't fully support that, Roo Code shows tool-calling errors. Check Tool Calling on luv13 for which luv13 models are confirmed, and test a short task first. For the idea in general, see Tool Calling.

Model Configuration

Roo Code lets you set max output tokens, context window, image support and prices.

  • Prices: luv13 is a flat $0.33 per 1M tokens on every model, input the same as output. See Pricing.
  • Context window: luv13 doesn't publish context lengths in its model list, so there's no official number to enter.

Check your settings first

This checks the key, base URL and model with a tool attached, which is close to what Roo Code sends:

curl https://api.luv13.ai/v1/chat/completions \
  -H "Authorization: Bearer $LUV13_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "luv13/glm-5.3-flash",
    "messages": [{"role": "user", "content": "Read the file README.md."}],
    "tools": [{
      "type": "function",
      "function": {
        "name": "read_file",
        "description": "Read a file from the workspace.",
        "parameters": {"type": "object", "properties": {"path": {"type": "string"}}, "required": ["path"]}
      }
    }]
  }'

If the reply contains tool_calls, the model is using the tool as Roo Code expects.