> ## Documentation Index
> Fetch the complete documentation index at: https://isol8.notdhruv.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Execute stream

> Run code and stream output as Server-Sent Events.

Streams execution events as SSE frames.

<ParamField body="request" type="ExecutionRequest" required>
  Execution request with `code` and `runtime`.
</ParamField>

<ParamField body="options" type="Isol8Options">
  Optional execution options merged over defaults.
</ParamField>

<Note>
  Streaming endpoint uses ephemeral execution lifecycle.
</Note>

<ResponseField name="type" type="string">
  Event kind: `stdout`, `stderr`, `exit`, or `error`.
</ResponseField>

<ResponseField name="data" type="string">
  Event payload content.
</ResponseField>

<RequestExample>
  ```bash theme={null}
  curl -N -X POST http://localhost:3000/execute/stream \
    -H "Authorization: Bearer $ISOL8_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "request": {
        "runtime": "python",
        "code": "import time\nfor i in range(3):\n print(i)\n time.sleep(1)"
      }
    }'
  ```
</RequestExample>

<ResponseExample>
  ```text theme={null}
  data: {"type":"stdout","data":"0\n"}

  data: {"type":"stdout","data":"1\n"}

  data: {"type":"stdout","data":"2\n"}

  data: {"type":"exit","data":"0"}
  ```
</ResponseExample>