Start a response
Starts a published workflow run.
Set stream: true for an SSE stream that ends with data: [DONE]. Leave it false for 202 Accepted with a run_id you can poll via GET /api/v1/runs/{runId} or resume via GET /api/v1/runs/{runId}/stream.
Authorizations
API key issued from the Blend AI dashboard. Prefix: bai_. Send as Authorization: Bearer bai_....
Body
Published workflow ID or owner-scoped API slug.
"pub_abc123"
Pin to a specific published version. Defaults to the latest published version.
"ver_xyz789"
When true, the response is an SSE stream. When false, returns 202 with a run_id for polling.
Workflow inputs keyed by the normalized label of each User Input node. Text inputs are strings; file/image/video inputs are URLs or uploaded file references. Internal Batch rows are not public API inputs unless exposed through User Input nodes.
Response
Server-Sent Events stream (when stream: true).
Newline-delimited SSE frames.