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This tool-call event fires when the agent invokes a tool or external function — e.g., querying a weather API or updating a spreadsheet.

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Example Payload

{
  "type": "tool-call",
  "call_id": "abc123",
  "timestamp": "2025-04-12T14:32:00Z",
  "metadata": {
    "functionName": "getWeather",
    "arguments": { "location": "New York" },
  }
}