# Edit a card's title or description

`PATCH https://evohub.io/api/v1/board/cards/{cardID}`

Part of the [Board API](https://docs.evohub.io/board.md) reference · operationId `updateCard`.

Changes the card's `title`, `description` or both; a field left out
is not changed, and at least one must be sent. Every edit raises the
card's `version` by one. Send the `version` you last read to refuse
the edit if someone changed the card since (**409**
`EDIT_CONFLICT`); leave it out to apply the edit regardless.

Requires the `board:card:write` scope.

## Authorization

Any one of:

- `bearerKey`
- `headerKey`

Where:

- `bearerKey`: HTTP Bearer — An EvoHub API key (`evohub_…`) as a bearer token.
- `headerKey`: API key in the header `X-API-Key` — An EvoHub API key (`evohub_…`).

## Path parameters

- `cardID` (string, required, example `crd_9f2e4d6c8b0a1e3f5d7c9b1a3e5f7d90`): The card's ID.

## Request body (required)

Content type: `application/json`

Type: `object`

- `title` (string, max length 200)
- `description` (string, max length 20000)
- `version` (integer): The version this edit was made against.

## Responses

### 200 — The card after the edit.

Content type: `application/json`

Type: `CardEnvelope`

- `data` (object)
  - `card` (Card)
    - `id` (string, example `crd_9f2e4d6c8b0a1e3f5d7c9b1a3e5f7d90`)
    - `board_id` (string)
    - `list_id` (string)
    - `number` (integer): The card's number on its board, from 1. With the board's `card_prefix` it is the card's reference.
    - `title` (string, max length 200)
    - `description` (string, max length 20000)
    - `color` (string): A hex colour, or `""` for none.
    - `due_at` (string (date-time)): Absent when the card has no due date.
    - `review` (Review)
      - `state` (string, one of `pending`, `approved`)
      - `approved_by` (string)
      - `approved_at` (string (date-time))
    - `completed_at` (string (date-time)): When the card entered a done list. Absent while it is not in one.
    - `created_by` (string)
    - `created_at` (string (date-time))
    - `updated_at` (string (date-time))
    - `version` (integer): Goes up by one on every edit of the title or description.
    - `assignee_ids` (array of string | null): Who the card is on. Filled in when a board or list is read; `null` when one card is read on its own.
    - `label_ids` (array of string | null): The labels the card carries. Filled in when a board or list is read; `null` when one card is read on its own.

### 400 — The body is not JSON for this endpoint (`INVALID_BODY`), or (`VALIDATION_ERROR`) neither field was sent, the title is blank or over 200 characters, or the description is over 20,000.

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `not found`)
  - `request_id` (string)

### 401 — No API key was sent, or it is unknown, revoked or expired (`UNAUTHORIZED`).

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `not found`)
  - `request_id` (string)

### 403 — The key lacks the scope this endpoint needs (`FORBIDDEN`).

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `not found`)
  - `request_id` (string)

### 404 — It does not exist, or it is on a board the caller cannot see (`NOT_FOUND`).

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `not found`)
  - `request_id` (string)

### 409 — The card changed since `version` (`EDIT_CONFLICT`). Read it again and reapply the edit.

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `not found`)
  - `request_id` (string)

### 429 — Too many requests (`RATE_LIMITED`). Wait for `Retry-After` seconds.

Headers:

- `Retry-After` (integer): Seconds to wait before retrying.

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `not found`)
  - `request_id` (string)

### 500 — Something went wrong on EvoHub's side (`INTERNAL_ERROR`). Retry later.

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `not found`)
  - `request_id` (string)

## Example request

```bash
curl -X PATCH 'https://evohub.io/api/v1/board/cards/crd_9f2e4d6c8b0a1e3f5d7c9b1a3e5f7d90' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer <TOKEN>' \
  -d '{
  "version": 3,
  "description": "Rotate before the old ones expire on the 30th. Staging first."
}'
```