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Start with a static audience so that you can review every member before a campaign launch.

Before you begin

Configure API access, create a test contact, and save its UUID as CONTACT_ID.
1

Create the audience

Save the returned id as AUDIENCE_ID.
2

Add your contact

Send your contact UUID in the contacts array:
See static audience membership for the full contract.
3

Check membership

Expected result

Your contact appears in the audience membership response. Creating an audience does not launch a campaign.

Troubleshooting

Manual membership changes apply to static audiences. For a live audience, membership follows rules. A 404 can mean an ID is absent from the key’s organization. See Audiences API. Next: build a flow.