Agentic RFT — Tool Calling

Train reasoning models (o4-mini) for agentic scenarios where the model invokes external tools during chain-of-thought reasoning.

⚠️ Access required: Agentic RFT with tool calling and GPT-5 RFT are behind feature flags. You must request access through the Microsoft Foundry portal or your Microsoft account team. o4-mini RFT without tools is generally available.

Tool Definition Format

tools = [
    {
        "name": "search",
        "server_url": "https://your-function-app.azurewebsites.net/api/tools",
        "headers": {