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Workflow Utilities Pick Image By Index

Integrate

Model id workflow-utilities/pick-image-by-index
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/workflow-utilities/pick-image-by-index?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "images": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ],
    "index": 1
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

This request: ≈$0.001 1 API credit Run it on this page

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Utility · Image

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Controls are generated from the model schema. The code and the price update as you change them.

•required image_urls
Drop a file, or

Image URL array used as the selection source.

•required

Image selection by position, counting from 1: request 1 for the first image, 2 for the second, and continue likewise.

Advanced fallback_index
fallback_index default first-image

Out-of-range image selection policy, defaulting to `first-image`; it is ignored for a valid `index`, and validation still fails for an `index` below 1 or an empty `image_urls` array. Only an `index` beyond the array length activates the policy: `first-image` chooses the initial image, whereas `last-image` chooses the final image.

POST /run/workflow-utilities/pick-image-by-index?wait=20 quote → $0.001
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/workflow-utilities/pick-image-by-index?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "images": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ],
    "index": 1
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Run this request

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About Workflow Utilities Pick Image By Index

Returns one image from an array of image URLs. `index` is 1-based, so 1 gives the first image. When the index is beyond the list length, `fallback_index` decides whether the first or last image is returned. Useful for chaining steps in a workflow.

Parameters

Send either the canonical name or the native name, not both. Canonical names

NameType DefaultAllowed Description
image_urlsrequired images
Typeurl[] · image
Image URL array used as the selection source.
indexrequired
Typeinteger
Image selection by position, counting from 1: request 1 for the first image, 2 for the second, and continue likewise.
fallback_indexoptional
Typeenum
Defaultfirst-image
first-imagelast-image
Out-of-range image selection policy, defaulting to `first-image`; it is ignored for a valid `index`, and validation still fails for an `index` below 1 or an empty `image_urls` array. Only an `index` beyond the array length activates the policy: `first-image` chooses the initial image, whereas `last-image` chooses the final image.
required Canonical name, also accepted

File parameters take a public https:// URL, a data: URI up to 10 MB, or the file_url of an upload. Files

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "workflow-utilities/pick-image-by-index",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 1,
    "usd": "0.001",
    "charged": 1,
    "refunded": 0
  },
  "input": {
    "image_urls": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ],
    "index": 1
  },
  "output": {
    "image": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200,
      "width": 1024,
      "height": 768
    },
    "images": [
      {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200,
        "width": 1024,
        "height": 768
      }
    ]
  },
  "outputs": [
    {
      "type": "image",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "width": 1024,
      "height": 768,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
Your files, your choiceEvery outputs[].url is a copy on our storage: kept forever (paid per GB-month) or 7 days for free, by your account setting or ?storage=.
Same shape on every modeltype, url, content_type, width, height and duration, for images, video and audio alike. output is the model’s own result object.
Fields of output
image
object {url, content_type, file_name, file_size, width, height}Image selected at the specified position.
images
array of object {url, content_type, file_name, file_size, width, height}Compatibility output for downstream nodes expecting an `images` reference, as provided by merge and other utilities. It holds the selected image in a one-element array, so those nodes require no changes.

More models: Image Editing

For AI agents: this page as Markdown is at https://doitong.com/developers/models/workflow-utilities/pick-image-by-index.md. All models and guides: https://doitong.com/developers/llms.txt