Batch Image Generation API

A batch image generation API accepts multiple prompts or inputs in one request and processes them asynchronously, returning all generated images through polling or webhook delivery instead of requiring individual calls.

Each workflow execution processes the full node graph per run. Daily execution limits range from 50 on the Free plan to unlimited on Enterprise, with all plans capped at 10 executions per minute.

All image generation nodes work in batch workflows, including Flux 2 Pro, Recraft V4, Imagen 4, Nano Banana 2, and SeDream V4. Select any model node on the canvas and connect it to your pipeline.

Generate an API key starting with sk- from your dashboard under Settings. Include it as a Bearer token in the Authorization header. Webhook trigger endpoints are the only calls that skip authentication entirely.

Yes, webhook-triggered workflows accept POST requests to /workflow/{webhookId}/trigger with no authentication required. This makes it simple to connect external forms, Zapier automations, or CI/CD pipelines to your generation workflow.

Poll the GET /workflows/executions/{id}/poll endpoint using exponential backoff, starting at one second and capping at ten seconds between attempts. The response returns RUNNING, COMPLETED with node outputs, or FAILED with error details.

The API returns a 402 status with an insufficientCredits flag and a per-node credit breakdown showing exactly which node needs how many credits, so you can adjust your plan before retrying.

Yes, include an Idempotency-Key header on your execute request. Identical keys submitted within a 24-hour window replay the original response without triggering a duplicate workflow execution or consuming additional credits.