Step 2: Connect the Image Generation Request

Submit the prompt and image URL to the API to start image generation.

1. Add Submit Creative Request and connect it after Product Creative Form.
2. Set URL to https://api.defapi.org/api/image/gen.
3. Set Method to POST and Specify Body to JSON.
4. Set JSON Body to: ={ "prompt": "{{$json.prompt}}", "model": "google/nano-banana", "images": ["{{ $json.img_url }}"] }
5. Set headers:
   • Content-Type → application/json
   • Authorization → =Bearer {{ $json.api_key }}

Step 3: Set Up Processing Delay and Status Checks

Wait for the task to process, then query the task status until success.

1. Add Delay for Processing and connect it after Submit Creative Request.
2. Set Amount to 10 seconds.
3. Add Fetch Task Status after Delay for Processing.
4. Set URL to https://api.defapi.org/api/task/query.
5. Enable Send Query and set Query Parameters:
   • task_id → ={{$json.data.task_id}}
6. Set headers:
   • Content-Type → application/json
   • Authorization → =Bearer {{ $('Product Creative Form').item.json.api_key }}
7. Add Verify Generation Result after Fetch Task Status and set the condition to: ={{ $json.data.status == 'success' }}.
8. Connect the false output of Verify Generation Result back to Delay for Processing to retry until success.

Step 4: Configure Output and Credit Retrieval

When generation succeeds, capture the image URL and retrieve account credit.

1. Connect the true output of Verify Generation Result to Prepare Image Output.
2. In Prepare Image Output, add an assignment:
   • image_url → ={{$json.data.result[0].image}}
3. Add Retrieve Account Credit after Prepare Image Output.
4. Set URL to https://api.defapi.org/api/user and set the header:
   • Authorization → =Bearer {{ $('Product Creative Form').item.json.api_key }}
5. Add Display Credit Info after Retrieve Account Credit and set:
   • data.credit → ={{ $json.data.credit }}

Step 5: Test and Activate Your Workflow

Run a full test to confirm image generation, looping status checks, and credit output.

1. Click Execute Workflow and submit the Product Creative Form with a real prompt, image URL, and API key.
2. Verify that Submit Creative Request returns a task ID and that Delay for Processing waits before Fetch Task Status runs.
3. Confirm Verify Generation Result loops back to Delay for Processing until the status is successful.
4. Check that Prepare Image Output outputs an image_url and Display Credit Info returns data.credit.
5. When the test succeeds, toggle the workflow to Active for production use.