Seedance + n8n: Build a Bounded Async Polling Workflow

Short summary

This tutorial walks through building a production-grade bounded async polling workflow in n8n for video generation APIs like Seedance. It covers submitting tasks, preserving task_id and loop state across nodes, enforcing configurable polling limits, and handling success, failure, and timeout branches. The key challenge is maintaining state when HTTP Request nodes replace item data with API responses.

• •Demonstrates a complete n8n workflow for async video API polling with configurable interval and max poll limits
• •Solves the state-erasure problem where HTTP response nodes overwrite loop counters and task configuration
• •Includes concrete node configurations for submit, save, wait, poll, merge, and branching logic

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