<!-- enhance-docs page=reference/cli/recording/start -->
<!-- enhance-docs release-sha256=8a804cfc9a6fc6b942b8daf6a82266ad6e308291ae4351abee3346bc696d1258 -->

# enhance-dev recording start

```text
enhance-dev recording start [options]
```

## Arguments

This command takes no positional arguments.

## Options

| Option | Required | Default | Meaning |
| --- | --- | --- | --- |
| `--source-url <string>` | Yes | None | Original page URL associated with the capture or recording. |
| `--viewport [json]` | Yes | None | Viewport JSON, for example `{"width":1440,"height":900}`. |
| `--page-title [value]` | Yes | None | Required captured page title, or the literal null. |
| `--audio [value]` | No | `null` | Audio JSON such as `{"mimeType":"audio/webm;codecs=opus","sampleRate":48000}`, or null. |
| `--json <json>` | No | None | Complete procedure input as JSON; do not combine it with field flags. |
| `--client-token <uuid>` | No | None | Stable UUID to reuse when retrying the exact same mutation. |

## Input

This command presents the capability `recording.start`. It has write effect and single idempotency.

<details class="reference-schema">
<summary>Show complete input JSON Schema</summary>

```json
{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"sourceUrl":{"type":"string"},"viewport":{"type":"object","properties":{"width":{"type":"integer","exclusiveMinimum":0,"maximum":9007199254740991},"height":{"type":"integer","exclusiveMinimum":0,"maximum":9007199254740991}},"required":["width","height"]},"pageTitle":{"anyOf":[{"type":"string"},{"type":"null"}]},"audio":{"default":null,"anyOf":[{"type":"object","properties":{"mimeType":{"type":"string","minLength":1,"maxLength":100},"sampleRate":{"type":"integer","minimum":8000,"maximum":192000}},"required":["mimeType","sampleRate"]},{"type":"null"}]}},"required":["sourceUrl","viewport","pageTitle"]}
```
</details>


## Output

This command writes JSON records to standard output. Returns a typed recording.start result from the Enhance API without transport-specific prose.

<details class="reference-schema">
<summary>Show complete output JSON Schema</summary>

```json
{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"recordingId":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"ownerPersonId":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"chunkIndex":{"type":"number","const":0},"upload":{"type":"object","properties":{"url":{"type":"string","format":"uri"},"expiresAt":{"type":"string","format":"date-time","pattern":"^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"},"headers":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{"type":"string"}}},"required":["url","expiresAt","headers"],"additionalProperties":false},"audioUpload":{"anyOf":[{"type":"object","properties":{"url":{"type":"string","format":"uri"},"expiresAt":{"type":"string","format":"date-time","pattern":"^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"},"headers":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{"type":"string"}}},"required":["url","expiresAt","headers"],"additionalProperties":false},{"type":"null"}]}},"required":["recordingId","ownerPersonId","chunkIndex","upload","audioUpload"],"additionalProperties":false}
```
</details>


## Examples

```bash
enhance-dev recording start --source-url <string> --viewport [json] --page-title [value]
```

<details class="reference-schema">
<summary>Show example input</summary>

```json
{
 "sourceUrl": "x",
 "viewport": {
  "width": 1,
  "height": 1
 },
 "pageTitle": "x"
}
```
</details>

<details class="reference-schema">
<summary>Show example output</summary>

```json
{
 "recordingId": "00000000-0000-4000-8000-000000000010",
 "ownerPersonId": "00000000-0000-4000-8000-000000000010",
 "chunkIndex": 0,
 "upload": {
  "url": "https://example.test/path",
  "expiresAt": "2026-08-10T00:00:00.000Z",
  "headers": {}
 },
 "audioUpload": {
  "url": "https://example.test/path",
  "expiresAt": "2026-08-10T00:00:00.000Z",
  "headers": {}
 }
}
```
</details>

## Exit behaviour

| Exit code | Meaning |
| --- | --- |
| `0` | The command succeeded. |
| `1` | The command failed for another reason (`INTERNAL`). A write may have an unknown outcome. |
| `2` | The command line was malformed. Nothing ran. |
| `3` | The API refused the input (`BAD_REQUEST`). |
| `4` | The credential is missing or expired (`UNAUTHORIZED`). |
| `5` | The API refused the request (`FORBIDDEN`, `NOT_FOUND`, `CONFLICT`, `RATE_LIMITED`). |
| `6` | A batch finished only in part. Retry with the same `--client-token`. |

## Versions

Minimum tested versions: Enhance CLI and MCP runtime 0.1.40, plugin 1.0.38, Node.js 24. No older floor is published.