> This page is for version v2026-02-09 (default).
> For other versions, use one of these documentation indexes:
> - v2026-02-09 (default): https://docs.extend.ai/2026-02-09/llms.txt
> - v2025-04-21: https://docs.extend.ai/2025-04-21/llms.txt
> - v2024-12-23: https://docs.extend.ai/2024-12-23/llms.txt

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.extend.ai/llms.txt
> Use this file to discover all available pages before exploring further.
>
> ## API version
> The current API version is `2026-02-09`, served at the site root (no version prefix in URLs).
> If this page URL contains `/2025-04-21/` or `/2024-12-23/`, you are reading an older API version.
> Prefer the current docs at https://docs.extend.ai/llms.txt unless the user explicitly needs that older version.
> Do not treat older-version pages as the source of truth for new integrations.

# Delete Split Run

DELETE https://api.extend.ai/split_runs/{id}

Delete a split run and all associated data from Extend. This operation is permanent and cannot be undone.

This endpoint can be used if you'd like to manage data retention on your own rather than automated data retention policies. Or make one-off deletions for your downstream customers.


Reference: https://docs.extend.ai/api-reference/endpoints/split/delete-split-run

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Servers

- `https://api.extend.ai` (Production, default)
- `https://api.us2.extend.app` (Production US2)
- `https://api.eu1.extend.ai` (Production EU1)

## Request

### Path parameters

- `id` (string, required) — The ID of the split run.

### Headers

- `x-extend-api-version` ("2026-02-09", optional, default: 2026-02-09) — API version to use for the request. If you're using an SDK, you can ignore this parameter. If you are not using an SDK and do not specify a version, you will either receive a `400 Bad Request` or be set to a previous legacy version. See [API Versioning](https://docs.extend.ai/2026-02-09/api-reference/api-versioning) for more details.
- `x-extend-workspace-id` (string, optional) — The workspace ID to target. **Required** when using an organization-scoped API key; optional for workspace-scoped keys (the key is already tied to a workspace). See [Authentication](https://docs.extend.ai/2026-02-09/api-reference/authentication) for details on API key scopes.

## Response

### 200

Splitter run deleted successfully

- `id` (string, required) — The ID of the deleted split run

## Errors

### 400 Bad Request Error

Standard error response format for all Extend API errors. See the [Error Codes documentation](https://docs.extend.ai/2026-02-09/api-reference/error-handling) for error handling recommendations.

- `code` (string, required) — Error code for programmatic handling.
- `message` (string, required) — Human-readable error message suitable for displaying to developers. Do not rely on the exact text of this message as it may change.
- `retryable` (boolean, required) — Whether the request can be retried. When true, retry with exponential backoff. When false, fix the underlying issue before retrying.
- `requestId` (string, optional) — Unique request identifier for support purposes. Always include this when contacting Extend support about an error.
- `docUrl` (string, optional) — Link to relevant documentation when one is available.

### 401 Unauthorized Error

Standard error response format for all Extend API errors. See the [Error Codes documentation](https://docs.extend.ai/2026-02-09/api-reference/error-handling) for error handling recommendations.

- `code` (string, required) — Error code for programmatic handling.
- `message` (string, required) — Human-readable error message suitable for displaying to developers. Do not rely on the exact text of this message as it may change.
- `retryable` (boolean, required) — Whether the request can be retried. When true, retry with exponential backoff. When false, fix the underlying issue before retrying.
- `requestId` (string, optional) — Unique request identifier for support purposes. Always include this when contacting Extend support about an error.
- `docUrl` (string, optional) — Link to relevant documentation when one is available.

### 402 Payment Required Error

Standard error response format for all Extend API errors. See the [Error Codes documentation](https://docs.extend.ai/2026-02-09/api-reference/error-handling) for error handling recommendations.

- `code` (string, required) — Error code for programmatic handling.
- `message` (string, required) — Human-readable error message suitable for displaying to developers. Do not rely on the exact text of this message as it may change.
- `retryable` (boolean, required) — Whether the request can be retried. When true, retry with exponential backoff. When false, fix the underlying issue before retrying.
- `requestId` (string, optional) — Unique request identifier for support purposes. Always include this when contacting Extend support about an error.
- `docUrl` (string, optional) — Link to relevant documentation when one is available.

### 403 Forbidden Error

Standard error response format for all Extend API errors. See the [Error Codes documentation](https://docs.extend.ai/2026-02-09/api-reference/error-handling) for error handling recommendations.

- `code` (string, required) — Error code for programmatic handling.
- `message` (string, required) — Human-readable error message suitable for displaying to developers. Do not rely on the exact text of this message as it may change.
- `retryable` (boolean, required) — Whether the request can be retried. When true, retry with exponential backoff. When false, fix the underlying issue before retrying.
- `requestId` (string, optional) — Unique request identifier for support purposes. Always include this when contacting Extend support about an error.
- `docUrl` (string, optional) — Link to relevant documentation when one is available.

### 404 Not Found Error

Standard error response format for all Extend API errors. See the [Error Codes documentation](https://docs.extend.ai/2026-02-09/api-reference/error-handling) for error handling recommendations.

- `code` (string, required) — Error code for programmatic handling.
- `message` (string, required) — Human-readable error message suitable for displaying to developers. Do not rely on the exact text of this message as it may change.
- `retryable` (boolean, required) — Whether the request can be retried. When true, retry with exponential backoff. When false, fix the underlying issue before retrying.
- `requestId` (string, optional) — Unique request identifier for support purposes. Always include this when contacting Extend support about an error.
- `docUrl` (string, optional) — Link to relevant documentation when one is available.

### 422 Unprocessable Entity Error

Standard error response format for all Extend API errors. See the [Error Codes documentation](https://docs.extend.ai/2026-02-09/api-reference/error-handling) for error handling recommendations.

- `code` (string, required) — Error code for programmatic handling.
- `message` (string, required) — Human-readable error message suitable for displaying to developers. Do not rely on the exact text of this message as it may change.
- `retryable` (boolean, required) — Whether the request can be retried. When true, retry with exponential backoff. When false, fix the underlying issue before retrying.
- `requestId` (string, optional) — Unique request identifier for support purposes. Always include this when contacting Extend support about an error.
- `docUrl` (string, optional) — Link to relevant documentation when one is available.

### 429 Too Many Requests Error

Standard error response format for all Extend API errors. See the [Error Codes documentation](https://docs.extend.ai/2026-02-09/api-reference/error-handling) for error handling recommendations.

- `code` (string, required) — Error code for programmatic handling.
- `message` (string, required) — Human-readable error message suitable for displaying to developers. Do not rely on the exact text of this message as it may change.
- `retryable` (boolean, required) — Whether the request can be retried. When true, retry with exponential backoff. When false, fix the underlying issue before retrying.
- `requestId` (string, optional) — Unique request identifier for support purposes. Always include this when contacting Extend support about an error.
- `docUrl` (string, optional) — Link to relevant documentation when one is available.

### 500 Internal Server Error

Standard error response format for all Extend API errors. See the [Error Codes documentation](https://docs.extend.ai/2026-02-09/api-reference/error-handling) for error handling recommendations.

- `code` (string, required) — Error code for programmatic handling.
- `message` (string, required) — Human-readable error message suitable for displaying to developers. Do not rely on the exact text of this message as it may change.
- `retryable` (boolean, required) — Whether the request can be retried. When true, retry with exponential backoff. When false, fix the underlying issue before retrying.
- `requestId` (string, optional) — Unique request identifier for support purposes. Always include this when contacting Extend support about an error.
- `docUrl` (string, optional) — Link to relevant documentation when one is available.

## Examples

**Response**

```json
{
  "id": "splr_Xj8mK2pL9nR4vT7qY5wZ"
}
```