# Update personalization

> Replace the audience override, style vocabulary override and global rules. Read settings.personalization first and send all three: any field left out is cleared. Call it only when the user asked for this in the conversation; never on your own initiative.

`settings.update_personalization` · write

- **MCP tool:** `settings_update_personalization`. Catalog: reach it with `find_actions` and `run_write_action`, or turn on the full toolset.
- **REST:** `POST /v1/settings/update-personalization`
- **CLI:** `xholic settings update-personalization`
- **Scope:** `write`
- **Plan:** Every plan, including the trial
- **Cost:** Free.
- **Rate limit bucket:** `write`

## Input

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `audienceOverride` | string ≤ 600 chars or null | No |  |
| `styleVocabularyOverride` | string ≤ 1000 chars or null | No |  |
| `globalRules` | string ≤ 500 chars or null | No |  |
| `account` | string ≤ 64 chars | No | X account to act on, as @handle. Leave it out to use the connection's default account. |
| `dryRun` | boolean | No | Return exactly what would happen without doing it. |
| `idempotencyKey` | string ≤ 200 chars | No | A unique key for this write. Repeating a call with the same key returns the first result instead of acting twice. |