Versioning

The &Open API uses calendar-based versioning to ensure transparency and predictable release cycles. Versions follow the YYYY-MM format, representing the year and month when the API contract was frozen.

Setting the API version

The AndOpen-API-Version header is required on every API request. Omitting this header or sending an unsupported version will result in a 401 Unauthorized response.

curl -X GET "https://api.andopen.co/campaigns" \
  -H "Authorization: Bearer <api_key>" \
  -H "AndOpen-API-Version: 2025-10"

Supported versions

Version	Status
`2025-10`	Current, Supported

Setting the API version​

Supported versions​

Setting the API version

Supported versions