# Vote on a card

`POST https://evohub.io/api/v1/retro/boards/{boardID}/cards/{cardID}/votes`

Part of the [Retro API](https://docs.evohub.io/retro.md) reference · operationId `voteOnRetroCard`.

Agrees (`1`) or disagrees (`-1`) with a card. Each caller has one vote
per card: voting the same way again removes it, voting the other way
switches it. The answer is the card's net score and the caller's vote
afterwards (`0` when removed). The board must be active and its
voting on.

Requires the `retro: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

- `boardID` (string, required, example `brd_3f9a1c7e2b8d4a60`): The board's ID.
- `cardID` (string, required, example `crd_8d0c4b6e1a9f2357`): The card's ID.

## Request body (required)

Content type: `application/json`

Type: `object`

- `value` (integer, required, one of `1`, `-1`): `1` to agree, `-1` to disagree.

## Responses

### 200 — The vote was applied.

Content type: `application/json`

Type: `object`

- `success` (boolean)
- `data` (object)
  - `vote_score` (integer): The card's net score across everyone.
  - `my_vote` (integer, one of `-1`, `0`, `1`): The caller's vote now.

### 400 — The body is not JSON (`INVALID_BODY`), or `value` is not `1` or `-1` (`INVALID_VALUE`).

Content type: `application/json`

Type: `Error`

- `success` (boolean, value `false`): Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only `error`.
- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `board 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`

- `success` (boolean, value `false`): Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only `error`.
- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `board not found`)
  - `request_id` (string)

### 403 — The key lacks `retro:card:write` (`FORBIDDEN`), or voting is turned off on this board (`VOTING_DISABLED`).

Content type: `application/json`

Type: `Error`

- `success` (boolean, value `false`): Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only `error`.
- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `board not found`)
  - `request_id` (string)

### 404 — The board is not one the caller can see (`NOT_FOUND`), or the card is not on it (`CARD_NOT_FOUND`).

Content type: `application/json`

Type: `Error`

- `success` (boolean, value `false`): Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only `error`.
- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `board not found`)
  - `request_id` (string)

### 409 — The board is closed and its content cannot change (`BOARD_CLOSED`). Reopen it first.

Content type: `application/json`

Type: `Error`

- `success` (boolean, value `false`): Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only `error`.
- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `board 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`

- `success` (boolean, value `false`): Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only `error`.
- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `board not found`)
  - `request_id` (string)

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

Content type: `application/json`

Type: `Error`

- `success` (boolean, value `false`): Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only `error`.
- `error` (object, required)
  - `code` (string, required, example `NOT_FOUND`)
  - `message` (string, required, example `board not found`)
  - `request_id` (string)

## Example request

```bash
curl -X POST 'https://evohub.io/api/v1/retro/boards/brd_3f9a1c7e2b8d4a60/cards/crd_8d0c4b6e1a9f2357/votes' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer <TOKEN>' \
  -d '{
  "value": 1
}'
```