# AWS WAF image grid

> Solve AWS WAF image grid with the Noptcha API: type image.grid.aws, parameters, solution fields, compatibility names and runnable examples.

Source: https://noptcha.com/docs/task-types/image-grid-aws/

## Summary

| Property | Value |
| --- | --- |
| v1 type | `image.grid.aws`  beta  |
| Compatibility names | *none: native API (v1) only* |
| Proxy | not used |
| Deadline | 60 seconds (starting value). A task not solved by then fails with `timeout` and is not charged. |

> **Beta:** This type works like the others, but its parameters and success rate may still change.

## Parameters

The `params` object of `POST /v1/tasks`. Unknown fields are rejected with `422 invalid_params`.

| Field | Type | Description |
| --- | --- | --- |
| `image`  required  | `string` |  Base64 of the whole 3x3 grid image.  min length 1 · max length 1,000,000  |
| `question`  optional  | `string` |  The full question as shown on the page, e.g. Select all hats.  min length 1 · max length 1,024  |

## Solution

The `solution` object of a solved task.

| Field | Type | Description |
| --- | --- | --- |
| `objects`  required  | `array of integer` |  Zero-based indexes of the images or tiles to select, left to right, top to bottom.  max items 64 · unique items  |
| `confidences`  optional  | `array of number` |  max items 64  |

## Example: native API (v1)

Runs as is with a test key (`nop_test_…`) in the [sandbox](https://noptcha.com/docs/sandbox.md); use a live key for real tasks.

POST /v1/tasks

```json
{
  "type": "image.grid.aws",
  "params": {
    "image": "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==",
    "question": "Select all hats"
  }
}
```

**curl**

```bash
export NOPTCHA_KEY=nop_test_...  # your test or live key

# waits up to 60 s; 200 = finished (solved or failed), 202 = still processing
IDEMPOTENCY_KEY=$(uuidgen)  # one key per task you want; a retry of the same request reuses it
curl -s -X POST "https://api.noptcha.com/v1/tasks" \
  -H "Authorization: Bearer $NOPTCHA_KEY" \
  -H 'Prefer: wait=60' \
  -H "Idempotency-Key: $IDEMPOTENCY_KEY" \
  -H 'Content-Type: application/json' \
  -d @- <<EOF
{
  "type": "image.grid.aws",
  "params": {
    "image": "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==",
    "question": "Select all hats"
  }
}
EOF

# on 202: long-poll with the "id" from the response
TASK_ID=...
curl -s "https://api.noptcha.com/v1/tasks/$TASK_ID?wait=60" \
  -H "Authorization: Bearer $NOPTCHA_KEY"
```


**Python**

```python
import os
import time
import uuid

import requests

API = "https://api.noptcha.com"
HEADERS = {"Authorization": f"Bearer {os.environ['NOPTCHA_KEY']}"}  # a nop_test_ key runs in the sandbox

# One Idempotency-Key per task you want. If you retry this request after a network error, send the same key and
# the same body bytes: you get the same task back, not a second one (see Idempotency on the Tasks page).
idempotency_key = str(uuid.uuid4())
r = requests.post(
    f"{API}/v1/tasks",
    headers={**HEADERS, "Prefer": "wait=60", "Idempotency-Key": idempotency_key},
    json={
        "type": "image.grid.aws",
        "params": {
            "image": "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==",
            "question": "Select all hats",
        },
    },
    timeout=100,
)
task = r.json()
if r.status_code >= 400:
    raise RuntimeError(f"{task['code']}: {task.get('detail', '')}")
while task["status"] == "processing":  # 202: not finished within the wait
    time.sleep(1)  # a long poll can return early (for example when wait slots are full)
    r = requests.get(f"{API}/v1/tasks/{task['id']}", params={"wait": 60}, headers=HEADERS, timeout=100)
    task = r.json()
    if r.status_code >= 400:
        raise RuntimeError(f"{task['code']}: {task.get('detail', '')}")

if task["status"] == "solved":
    print(task["solution"])
else:
    print("failed:", task["error"]["code"], task["error"]["message"])
```


**Node.js**

```js
import { randomUUID } from 'node:crypto';

const API = 'https://api.noptcha.com';
const HEADERS = { Authorization: `Bearer ${process.env.NOPTCHA_KEY}` }; // a nop_test_ key runs in the sandbox

async function v1(path, init = {}) {
  const res = await fetch(`${API}${path}`, { ...init, headers: { ...HEADERS, ...init.headers } });
  const data = await res.json();
  if (!res.ok) throw new Error(`${data.code}: ${data.detail ?? ''}`);
  return data;
}

// One Idempotency-Key per task you want. If you retry this request after a network error, send the same key and
// the same body bytes: you get the same task back, not a second one (see Idempotency on the Tasks page).
const idempotencyKey = randomUUID();
let task = await v1('/v1/tasks', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', Prefer: 'wait=60', 'Idempotency-Key': idempotencyKey },
  body: JSON.stringify({
    type: "image.grid.aws",
    params: {
      image: "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==",
      question: "Select all hats",
    },
  }),
});
while (task.status === 'processing') {
  await new Promise((r) => setTimeout(r, 1000)); // a long poll can return early (for example when wait slots are full)
  task = await v1(`/v1/tasks/${task.id}?wait=60`); // long poll
}
if (task.status === 'solved') console.log(task.solution);
else console.log('failed:', task.error.code, task.error.message);
```

In the sandbox the task is solved at once and `solution` is:

```json
{
  "objects": [
    0
  ]
}
```

> **Note:** This type has no compatibility API name; use the native API (v1).