# platform.runtime.update

Set this organization's shared chat model defaults, requested online, local, hybrid or own-cloud placement, and reviewed setup version. Supply the current revision (zero before a settings row exists) and an idempotency key. Local AI requires a local model and never falls back to online AI when it is unavailable. Chat titles use the first message without a model request. Moving data requires the separate migration workflow.

`POST /api/v1/accounting/platform.runtime.update`

Permissions: `accounting:read`, `accounting:write`, `accounting:admin` · Roles: admin · Idempotency key required · Send `expectedRevision`

MCP tool: `accounting_platform_runtime_update`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `expectedRevision` | integer | Yes | The record's current revision, from the last time you read it. If someone changed the record since, the request is refused with a conflict so you can reload and check before trying again. 0 to 2147483646. |
| `idempotencyKey` | string | Yes | Any unique text you generate once per intended change, so a retried request only happens once. Send it as the Idempotency-Key header instead if you prefer; if you send both they must match. 8–200 characters. |
| `settings` | object | Yes | No other fields. |
| `settings.onboardingVersion` | integer |  | 0 to 1. |
| `settings.placement` | enum |  | One of: `online`, `local`, `hybrid`, `byoc`. |
| `settings.ai` | object |  | No other fields. |
| `settings.ai.chat` | object |  | No other fields. |
| `settings.ai.chat.provider` | enum |  | One of: `default`, `local`. |
| `settings.ai.chat.model` | string or null |  |  |
| `settings.ai.chat.effort` | enum or null |  | One of: `low`, `medium`, `high`. |
| `settings.ai.title` | object |  | A short title. No other fields. |
| `settings.ai.title.provider` | "default" |  |  |
| `settings.ai.title.model` | any or null |  |  |
| `settings.ai.title.effort` | any or null |  |  |

## Example request

```bash
curl https://app.getoatmilk.com/api/v1/accounting/platform.runtime.update \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "expectedRevision": 3,
  "settings": {
    "onboardingVersion": 1
  }
}'
```

Reference page: https://app.getoatmilk.com/docs/api/platform.runtime.update