v1
latestOpenAPI 3.1.02026-07-267154122.0 KBAlias of POST /campaigns/{campaignId}/launch
Alias of POST /campaigns/{campaignId}/launch — activates the campaign and runs the launch pipeline. (Before the campaigns refactor this was a batch "mark sequences ready" op; it is now the campaign-activate launch.) Same body, params, and result shape.
Query parameters
Headers
Transport-level replay protection — any v2 POST may send it (1–255 printable ASCII characters; UUIDs recommended). The first response for a key is recorded and replayed verbatim for retries with the same key + method/path/body for 24 hours; replayed responses carry the Idempotency-Replay: true response header. Reusing a key with a different request — or retrying while the original is still in flight — returns 409 IDEMPOTENCY_ERROR. 5xx responses are never recorded (the retry re-executes).
Response
The transition result — or the dryRun report.