# List a calendar's holidays (/docs/api-reference/scheduling-holiday-calendars/list-scheduling-holidays)

What's coming, with names, as last read. Empty until its first read.

`GET https://api.coss.com/v1/scheduling/holiday_calendars/{id}/holidays`

Authenticate with your API key as a bearer token (`Authorization: Bearer coss_test_…`). Responses are JSON with snake_case fields; errors are `{ error: { type, code, message, param?, issues?, request_id } }` (https://coss.com/docs/api-reference/errors.md).

## Path parameters

- `id` (string, required): The holiday calendar's id.

## Example request

TypeScript (the `coss` package):

```ts
import { Coss } from "coss";

const coss = new Coss({
  apiKey: process.env.COSS_API_KEY,
  baseUrl: "https://api.coss.com",
});

const { data, error } = await coss.scheduling.holidayCalendars.holidays("");
```

HTTP:

```sh
curl -X GET "https://api.coss.com/v1/scheduling/holiday_calendars/{id}/holidays" \
  -H "Authorization: Bearer $COSS_API_KEY"
```

## Response 200

The holidays.

- `object` ("list", required)
- `data` (object[], required)
  - `date` (string, required)
  - `name` (string, required)
  - `region` (string | null, required)
- `has_more` (boolean, required)

Example:

```json
{
  "object": "list",
  "data": [
    {
      "date": "2027-12-25",
      "name": "Christmas Day",
      "region": null
    }
  ],
  "has_more": false
}
```

## Errors

- `400`: The `Coss-Version` header names an unknown API version (`invalid_api_version`).
- `401`: The API key is missing, invalid, revoked or expired (`authentication_error`).
- `403`: The API key lacks the permission this endpoint needs (`permission_error`), or its organization is suspended (`organization_suspended`).
- `404`: Nothing with this id or uid exists in the environment (`not_found`).
- `429`: Too many requests with this API key (`rate_limited`), or too many requests with invalid keys from this address (`too_many_failed_authentications`). Retry after `Retry-After` seconds. Successful responses carry `RateLimit-Limit`, `RateLimit-Remaining` and `RateLimit-Reset` (seconds until the limit is fully restored).
- `500`: Unexpected server error (`api_error` / `internal_error`).
- `503`: The API key could not be verified right now; retry (`service_unavailable`).