<!-- enhance-docs page=reference/cli/screen/create -->
<!-- enhance-docs release-sha256=8a804cfc9a6fc6b942b8daf6a82266ad6e308291ae4351abee3346bc696d1258 -->

# enhance-dev screen create

```text
enhance-dev screen create [options]
```

## Arguments

This command takes no positional arguments.

## Options

| Option | Required | Default | Meaning |
| --- | --- | --- | --- |
| `--client-token <string>` | Yes | None | Client-minted capture UUID; reuse it when retrying the same screen reservation. |
| `--is-recording-mark [boolean]` | No | `true` | Defaults to true for recording marks. Use false for an explicit canvas capture that retains recording provenance without adding a recording mark. |
| `--provenance [value]` | Yes | None | Required origin JSON `{"sourceRecordingId":"UUID","atMs":0}`, or the literal null. |
| `--route [value]` | Yes | None | Required original page route, or the literal null. |
| `--page-title [value]` | Yes | None | Required captured page title, or the literal null. |
| `--viewport [json]` | Yes | None | Viewport JSON, for example `{"width":1440,"height":900}`. |
| `--bytes <number>` | Yes | None | Exact byte length of the content uploaded through the signed URL. |
| `--sha256 [string]` | No | None | Optional hex SHA-256 of the screen file; the upload address then accepts only those bytes. |
| `--json <json>` | No | None | Complete procedure input as JSON; do not combine it with field flags. |

## Input

This command presents the capability `screen.create`. It has write effect and single idempotency.

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

```json
{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"clientToken":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"isRecordingMark":{"default":true,"type":"boolean"},"provenance":{"anyOf":[{"type":"object","properties":{"sourceRecordingId":{"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)$"},"atMs":{"type":"integer","minimum":0,"maximum":9007199254740991}},"required":["sourceRecordingId","atMs"]},{"type":"null"}]},"route":{"anyOf":[{"type":"string"},{"type":"null"}]},"pageTitle":{"anyOf":[{"type":"string"},{"type":"null"}]},"viewport":{"type":"object","properties":{"width":{"type":"integer","exclusiveMinimum":0,"maximum":9007199254740991},"height":{"type":"integer","exclusiveMinimum":0,"maximum":9007199254740991}},"required":["width","height"]},"bytes":{"type":"integer","minimum":1,"maximum":9007199254740991},"sha256":{"type":"string","pattern":"^[a-f0-9]{64}$"}},"required":["clientToken","provenance","route","pageTitle","viewport","bytes"]}
```
</details>


## Output

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

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

```json
{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"screenId":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"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},"alreadyExists":{"type":"boolean"},"state":{"type":"string","enum":["pending","stored"]}},"required":["screenId","upload","alreadyExists","state"],"additionalProperties":false}
```
</details>


## Examples

```bash
enhance-dev screen create --client-token <string> --provenance [value] --route [value] --page-title [value] --viewport [json] --bytes <number>
```

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

```json
{
 "clientToken": "00000000-0000-4000-8000-000000000010",
 "provenance": {
  "sourceRecordingId": "00000000-0000-4000-8000-000000000010",
  "atMs": 0
 },
 "route": "x",
 "pageTitle": "x",
 "viewport": {
  "width": 1,
  "height": 1
 },
 "bytes": 1
}
```
</details>

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

```json
{
 "screenId": "00000000-0000-4000-8000-000000000010",
 "upload": {
  "url": "https://example.test/path",
  "expiresAt": "2026-08-10T00:00:00.000Z",
  "headers": {}
 },
 "alreadyExists": false,
 "state": "pending"
}
```
</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.