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Version: 2025-10

Environments

The &Open API is available in two regional environments. Your account is assigned to a region when it is provisioned at signup, and all of your data is stored and processed within that region.

Base URLs​

RegionBase URL
US (default)https://api.andopen.co
EUhttps://api.eu.andopen.co

Every path is identical across regions — only the host differs. Replace the base URL in any example throughout this reference with the one for your account's region. The rest of this documentation uses the US base URL.

Choosing the correct region​

warning

Requests must be sent to the base URL for the region your account was provisioned in. A request sent to the wrong region cannot authenticate against your token and will be rejected with a 401 Unauthorized response.

Your region is fixed at signup and cannot be changed for an existing account. If you are unsure which region your account belongs to, check the &Open dashboard or contact support.

Example request​

curl -X GET "https://api.eu.andopen.co/campaigns" \
  -H "Authorization: Bearer your_api_token_here" \
  -H "AndOpen-API-Version: 2025-10" \
  -H "Content-Type: application/vnd.api+json"