Preview an agent-written contact-page change before approving publication
At a glance
An Indie Hackers walkthrough connects a Jotform request, n8n planning and content generation, a GitHub branch, a Vercel preview, an approval step, and post-change monitoring. This workflow is listed under builder, n8n, jotform, github, vercel, preview-approval.
This n8n template extracts invoice PDFs with GPT-4o, checks invoice numbers and totals, assesses category and risk, and uses a wait-and-resume approval path before recording the final status.
A builder reports that a two-court booking system became more reliable after moving availability checks, resource assignment, and booking IDs out of the LLM and into deterministic n8n workflows.
An n8n template combines an Ollama agent, three Supabase vector knowledge bases, Postgres memory, request validation, deduplication, and confidence-based escalation across Slack, Gmail, and callbacks.
An English n8n tutorial uses Google Vision OCR for PDF and image invoices, an LLM for structured fields, and Google Sheets for storage, making the OCR-to-extraction sequence explicit.