Building an Autonomous N8N AI Agent & Veo 3.1 Short-Form Video Pipeline on Cloudflare Edge Workers

Automating Multi-Step B2B Lead Enrichment & Faceless Video Generation in 2026

Modern automation teams combining n8n AI Agent Workflows, Veo 3.1 / Sora 2 visual scene generation, and Cloudflare Edge Workers need deterministic JSON schemas, sub-20ms prompt-injection sanitization, and automated SRT subtitle timing.

1. Sub-20ms N8N Webhook Payload Sanitization & Lead Enrichment

const N8N_EDGE_GUARD = "https://rapidapi-ai-prompt-injection-pii-guard-worker.antibot-scraper-worker.workers.dev/v1/guard";

export async function validateLeadPayload(rawLeadText: string) {
  const res = await fetch(`${N8N_EDGE_GUARD}?text=${encodeURIComponent(rawLeadText)}`);
  return await res.json();
}

2. Deterministic Veo 3.1 Scene Prompts + Word-Level SRT Subtitles

• Hook (0.0s - 2.5s): High-contrast visual disruption + 8-word spoken hook.
• Body Scenes (2.5s - 25.0s): 4-second cinematic Veo 3.1 prompts (85mm f/1.4, volumetric rim lighting, 60fps) paired with exact word-level SRT timestamps.
• Live Reference: github.com/duongynhi000005-oss