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9 October 2026 · Orchestration You can now send a list of customers to an Inbound API block in one call. An external system, such as a CDP or data platform, sends a file with customer IDs to the block’s URL. Everyone on the list enters the flow in a single run, ready to receive an Offer, Challenge or Game, as the flow guides. There is no longer one call per customer when the audience is built outside Nexus. A flow that starts with an Inbound API block named CDP starts Game, leading to a game and a banner The Inbound API block's Integration details step. The Per customer list section shows the endpoint URL, the HTTP headers and the file content

What’s new

  • One block, two ways in - the same Inbound API block and URL accept one customer, as before, or a file of many. Nothing changes on the canvas.
  • Integration details section on the block tells you the URL and content of the call, ready to copy across to your external system.
  • Checked on arrival - the file is checked while it uploads. The external system knows straight away if something is wrong, down to the row.

Good to know

  • Each inbound call adds those customers to the journey. When several calls contain the same customer, that customer enters the journey several times.
For more details, see the Inbound API block Help Center guide.
Last modified on November 13, 2026