curl --request POST \
  --url https://api.example.com/api/v2/projects/{project_id}/sessions/{session_id}/completions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "messages": [
    {
      "content": "<string>",
      "role": "system"
    }
  ],
  "inputs": null,
  "media_inputs": null,
  "tool_schema": [
    {
      "type": "<string>",
      "function": {
        "name": "<string>",
        "description": "<string>",
        "parameters": {}
      }
    }
  ],
  "session_info": {
    "custom_metadata": null
  },
  "trace_info": {
    "trace_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  },
  "prompt_info": {
    "prompt_template_version_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "environment": null
  },
  "call_info": {
    "start_time": null,
    "end_time": null,
    "model": null,
    "provider": null,
    "provider_info": null,
    "llm_parameters": null,
    "usage": {
      "prompt_tokens": 123,
      "completion_tokens": 123
    }
  },
  "test_run_info": {
    "test_run_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "test_case_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  },
  "eval_results": null,
  "response_info": {
    "function_call_response": {
      "name": "<string>",
      "arguments": "<string>"
    }
  },
  "completion_id": null,
  "parent_id": null,
  "output_schema": null
}
'

{
  "completion_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}