> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://onepin.ai/docs/reference/api-reference/workflows/download-run-api-v-1-workflows-workflow-id-runs-run-id-download-get/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://onepin.ai/_mcp/server.

# Download Run

GET https://api.onepin.ai/api/v1/workflows/{workflow_id}/runs/{run_id}/download

Create a temporary download URL for a complete workflow run export.

Returns a pre-signed URL pointing to a ZIP archive containing all audio
output files produced by the run. The URL is valid for 15 minutes
(`expires_at`). The archive is generated on first request and cached for
subsequent calls; re-calling this endpoint before expiry returns a new
URL for the same cached archive.

Only available for runs in `completed` status — returns 409 for runs that
are still active or ended in `failed`/`cancelled`. Returns 404 if the run
produced no audio files.

To download output from a single output node rather than the whole run,
use `GET /runs/{run_id}/nodes/{node_id}/download`.

Reference: https://onepin.ai/docs/reference/api-reference/workflows/download-run-api-v-1-workflows-workflow-id-runs-run-id-download-get

## Authentication

- `Authorization` header (bearer token, required) — Clerk JWT token
- `Authorization` header (bearer token, required) — Onepin live API key (`op_live_...`). Test and public keys are reserved in Phase 1.

## Servers

- `https://api.onepin.ai` (prod, default)
- `https://dev-api.onepin.ai` (dev)

## Request

### Path parameters

- `workflow_id` (string, required)
- `run_id` (string, required)

### Headers

- `X-Workspace-Id` (string, optional, nullable)

## Response

### 200

Successful Response

- `data` (DownloadUrlOut, required)
- `meta` (Meta, required)

## Errors

### 404 Not Found Error

No audio files found in this run

- `any`

### 409 Conflict Error

Run not yet completed or export too large

- `any`

### 422 Unprocessable Entity Error

Validation Error

- `detail` (list of ValidationError, optional)

## Types

### DownloadUrlOut

- `url` (string, required) — Pre-signed download URL. Valid until `expires_at`; do not cache beyond that time.
- `filename` (string, required) — Suggested filename for the downloaded ZIP archive.
- `expires_at` (datetime, required) — UTC datetime after which the URL is no longer valid (15 minutes from generation).

### Meta

- `request_id` (string, required)
- `timestamp` (datetime, required)

### ValidationError

- `loc` (list of ValidationErrorLocItems, required)
- `msg` (string, required)
- `type` (string, required)
- `input` (any, optional)
- `ctx` (ValidationErrorCtx, optional)

### ValidationErrorLocItems

### ValidationErrorCtx

## Examples

**Request**

```json
{}
```

**Response**

```json
{
  "data": {
    "url": "https://storage.onepin.ai/downloads/3f9a1b2c-7d4e-4f8a-9c3e-2b1d5f6a7e8c/export_run_9f8e7d6c.zip?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIOSFODNN7EXAMPLE%2F20240615%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240615T093000Z&X-Amz-Expires=900&X-Amz-SignedHeaders=host&X-Amz-Signature=abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890",
    "filename": "workflow_run_9f8e7d6c_export_20240615.zip",
    "expires_at": "2024-06-15T09:45:00Z"
  },
  "meta": {
    "request_id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "timestamp": "2024-06-15T09:30:00Z"
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.onepin.ai/api/v1/workflows/workflow_id/runs/run_id/download"

payload = {}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.get(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.onepin.ai/api/v1/workflows/workflow_id/runs/run_id/download';
const options = {
  method: 'GET',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.onepin.ai/api/v1/workflows/workflow_id/runs/run_id/download"

	payload := strings.NewReader("{}")

	req, _ := http.NewRequest("GET", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.onepin.ai/api/v1/workflows/workflow_id/runs/run_id/download")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.onepin.ai/api/v1/workflows/workflow_id/runs/run_id/download")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.onepin.ai/api/v1/workflows/workflow_id/runs/run_id/download', [
  'body' => '{}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.onepin.ai/api/v1/workflows/workflow_id/runs/run_id/download");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = [] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.onepin.ai/api/v1/workflows/workflow_id/runs/run_id/download")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```

> Onepin is a voice workflow platform that orchestrates, validates, and ships production-ready audio across 33 TTS models.