---
title: "Change how the chat looks"
method: PATCH
path: "/appearance"
tags: ["Agent"]
---

# Change how the chat looks

`PATCH /appearance`

## Request

- Base URL: `https://api.meetdarwin.ai/v1`
- URL: `https://api.meetdarwin.ai/v1/appearance`
- Auth: HTTP bearer

Requires the `agent:write` scope.

## Headers

- `Idempotency-Key` string

## Request body

- AppearanceUpdate
  - `brand` string
  - `background` string
  - `text` string
  - `accent` string
  - `corners` 'boxed' | 'rounded' | 'circle'
  - `text_size` 'standard' | 'large'
  - `launcher_icon` 'chat' | 'avatar'
  - `sound` boolean
  - `motion` boolean
  - `theme` object
  - `revision` integer

## Response `200`

OK

- Appearance
  - `object` 'appearance', required
  - `revision` integer, required
  - `brand` string, required
  - `background` string, required
  - `text` string, required
  - `accent` string, required
  - `theme` object, required

## Other responses

- `400`: Invalid request (`invalid_request`, `unsupported_version`).
- `401`: Missing or invalid key (`authentication_required`, `invalid_api_key`).
- `402`: The workspace must add a card before the API can be used (`payment_required`).
- `403`: The key lacks the scope (`insufficient_scope`), the feature is off (`feature_disabled`), or the workspace's plan doesn't include it (`plan_required`, with `required_plan`).
- `404`: No such object in this workspace (`not_found`).
- `409`: Conflicts with the current state (`conflict`, `idempotency_key_in_use`), or the change would leave a live agent with no calendar or live form (`goal_required`).
- `422`: Refused by a rule (`unprocessable`, `idempotency_key_reused`).
- `429`: Rate limited (`rate_limited`) or a monthly allowance used (`quota_exceeded`); see Retry-After.

## Changes

- **2026-10-20** `f93b0bcb454a`: 24 info
  - added the optional property `feature` to the response with the `400` status
  - added the optional property `feature` to the response with the `401` status
  - added the optional property `feature` to the response with the `402` status
  - added the optional property `feature` to the response with the `403` status
  - …20 more

[Operation history](https://skmtc.dev/meetdarwin/apis/darwin-api/changes/appearance/patch.md)

---

[API](https://skmtc.dev/meetdarwin/apis/darwin-api.md) · [All operations](https://skmtc.dev/meetdarwin/apis/darwin-api/llms.txt) · [OpenAPI document](https://skmtc.dev/meetdarwin/apis/darwin-api/revisions/f93b0bcb454a?raw)