> ## Documentation index
> Fetch the complete documentation index at: https://docs.leadity.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Stop validation

> Stop a live validation run: keep what it answered and refund the rest.

Stops a queued or running validation run. It settles on what has been answered and refunds the rest at once; items not answered stay unanswered and cost nothing. A stopped run cannot be resumed, and one that is already final answers not_running. Needs a key with the write scope.

`POST https://api.leadity.io/v1/validations/{id}/stop`

- Scope: `write`
- Spends credits: no
- MCP tool: `stop_validation`

## Headers

- `Authorization`, string, required. Bearer, a space, then an API key: Bearer lk_api_... An MCP key is refused here with wrong_key_kind.

## Path parameters

- `id`, string, required. The validation run's id, as create_validation and list_validations answer it. 1 to 64 characters, matches ^[A-Za-z0-9]{1,64}$.

## Example request

```bash cURL
curl -X POST "https://api.leadity.io/v1/validations/Wq5nB8kT3m/stop" \
  -H "Authorization: Bearer $LEADITY_API_KEY"
```

```javascript Node.js
const response = await fetch("https://api.leadity.io/v1/validations/Wq5nB8kT3m/stop", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.LEADITY_API_KEY}`,
  },
});

const data = await response.json();
console.log(data);
```

```python Python
import os

import requests

response = requests.post(
    "https://api.leadity.io/v1/validations/Wq5nB8kT3m/stop",
    headers={
        "Authorization": f"Bearer {os.environ['LEADITY_API_KEY']}",
    },
)

print(response.json())
```

## Response

- `id`, string, required.
- `creditsUsed`, integer, required. Credits kept for the items answered.
- `refunded`, integer, required. Credits returned to the balance.

## Example response

```json 200
{
  "id": "Wq5nB8kT3m",
  "creditsUsed": 96,
  "refunded": 135
}
```

## Errors

Every refusal answers `{ error, message }` with the status below. The full list is on the [Errors](https://docs.leadity.io/errors) page.

| Code | Status | Meaning | Extra fields |
| --- | --- | --- | --- |
| `unauthorized` | 401 | The API key is missing, malformed, revoked or expired. | - |
| `wrong_key_kind` | 401 | This key opens the other surface: an API key works on the HTTP API, an MCP key on the MCP server. | - |
| `insufficient_scope` | 403 | The key does not carry the scope this operation needs. | `requiredScope`: The scope the operation needs: read, write or spend. |
| `account_suspended` | 403 | The account is suspended. | - |
| `email_not_verified` | 403 | The account's email address is not verified yet. | - |
| `invalid_body` | 400 | The request does not match the operation's schema. | `issues`: The problems found, each with path (the field as a dotted path, led by the part of the request it travels in: path, query or body, such as body.items.1) and message (what is wrong there). |
| `not_found` | 404 | No such resource on this account. | `id`: On export_scrapes: the first id that is not one of the account's scrapes. |
| `not_running` | 409 | The validation run is already final. The body carries its status. | `status`: The run's final status. |
| `rate_limited` | 429 | Too many requests. Wait for the Retry-After seconds and try again. | `retryAfterSeconds`: The seconds to wait, the same number as the Retry-After header. |
| `try_again` | 503 | Leadity could not answer just now. Retry in a moment, with the same Idempotency-Key on a spending call. | `retryAfterSeconds`: When a request with this Idempotency-Key is still being processed: the seconds to wait before retrying with the same key, as the Retry-After header says. |
| `internal_error` | 500 | Something failed on our side. Nothing was charged twice. | `body`: On the MCP server, when Leadity answered in a shape the tool does not publish: that answer as it came. |