> ## Documentation Index
> Fetch the complete documentation index at: https://opensandbox-oc-s-762ac928075c46d2828bcb22.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Generate Upload URL

Generates a signed URL for uploading a file without an API key. See [Signed URLs](/sandboxes/signed-urls) for usage guide.

<ParamField path="id" type="string" required>
  Sandbox ID
</ParamField>

<ParamField body="path" type="string" required>
  Absolute path for the destination file
</ParamField>

<ParamField body="expiresIn" type="number" default="3600">
  URL lifetime in seconds (max: 86400)
</ParamField>

<ResponseExample>
  ```json 200 theme={null}
  {
    "url": "https://app.opencomputer.dev/api/sandboxes/sb-xxx/files/upload?path=%2Fapp%2Finput.csv&expires=1773906434&signature=abc123",
    "expiresAt": "2025-01-01T01:00:00Z"
  }
  ```
</ResponseExample>