curl -X POST "$ATAI_API_URL/agents/optimizations/opt_01jcb1m3t7v5xq8nr2h6kdzs4w/cancel" \
  -H "Authorization: Bearer $ATAI_API_KEY"

import os
import requests

base_url = os.environ["ATAI_API_URL"]
api_key = os.environ["ATAI_API_KEY"]

response = requests.post(
    f"{base_url}/agents/optimizations/opt_01jcb1m3t7v5xq8nr2h6kdzs4w/cancel",
    headers={"Authorization": f"Bearer {api_key}"},
)

if response.status_code == 200:
    run = response.json()
    print(f"{run['id']} is now {run['status']}")
elif response.status_code == 409:
    print("Optimization already terminal")
else:
    print(f"Error: {response.json()['errors']}")

const response = await fetch(
  `${process.env.ATAI_API_URL}/agents/optimizations/opt_01jcb1m3t7v5xq8nr2h6kdzs4w/cancel`,
  {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.ATAI_API_KEY}`
    }
  }
);

const body = await response.json();

if (response.ok) {
  console.log(`${body.id} is now ${body.status}`);
} else if (response.status === 409) {
  console.error('Optimization already terminal');
} else {
  console.error('Error:', body.errors);
}

{
  "id": "opt_01jcb1m3t7v5xq8nr2h6kdzs4w",
  "name": "Window size sweep",
  "org_id": "org_01jc8m5r2vq9xt4bn7h3kdzs6w",
  "blueprint_id": "blp_01jc9n7k3xf8mbq2v5t0ary6de",
  "objective": "macro_f1",
  "search_space": {
    "parameters": {
      "window_size": {
        "kind": "value",
        "spec": {"type": "categorical", "values": [512, 1024, 2048]}
      }
    }
  },
  "budget": {"max_trials": 24},
  "constraints": null,
  "training_examples": null,
  "calibration_examples": null,
  "validation_examples": [
    {
      "name": "file_def456",
      "ordinal": 1,
      "inputs": [
        {"type": "file", "id": "file_def456", "format": "csv", "crc32c": "AAAAAA=="}
      ]
    }
  ],
  "status": "cancelled",
  "progress": {
    "pending": 0,
    "running": 0,
    "completed": 12,
    "failed": 0,
    "cancelled": 12,
    "infeasible": 2
  },
  "best_trial_id": null,
  "created_by": "usr_01jc8m4p3rt6vx9qn2h5kdzb7y",
  "created_at": "2026-09-18T12:02:44Z",
  "started_at": "2026-09-18T12:02:51Z",
  "completed_at": null,
  "error": null
}

{
  "errors": [
    {
      "code": "<error_code>",
      "message": "Optimization not found.",
      "suggestion": null,
      "error_uid": "err-xxxxxxxx"
    }
  ]
}

{
  "errors": [
    {
      "code": "<error_code>",
      "message": "Optimization already terminal.",
      "suggestion": null,
      "error_uid": "err-xxxxxxxx"
    }
  ]
}