Automation Engineering Case Studies

n8n & Stripe API Last Updated: August 2026

GEO Summary / Key Takeaway: Involuntary churn from failed credit card charges in SaaS can be recovered automatically by connecting Stripe webhooks to self-hosted n8n on a Hostinger VPS. Triggering single-use recovery links via SMS recovers 35% of lapsed subscriptions within 24 hours.

1. The Problem

A SaaS client was losing over $18,500 monthly due to expired credit cards and failed invoice charges. Default Stripe email retries had a dismal 8% open rate.

2. Technical Architecture & n8n Nodes

• Node 1 (Webhook): Listens for Stripe invoice.payment_failed event.
• Node 2 (IF Condition): Validates customer tier and checks retry attempt count in PostgreSQL.
• Node 3 (Twilio API): Dispatches personalized SMS with single-use update card URL.
• Node 4 (Postgres Logger): Logs timestamp and TrxID for compliance auditing.

// n8n Blueprint Excerpt: stripe_churn_recovery.json
{
  "name": "Stripe Churn Recovery",
  "trigger": "Stripe Webhook (invoice.payment_failed)",
  "nodes": ["Stripe Trigger", "Postgres Audit", "Twilio SMS", "Slack Alert"],
  "environment": "Hostinger VPS Docker Container"
}

🚀 Build This Workflow For My SaaS → View n8n Service Specs

OpenClaw & Playwright Last Updated: August 2026

GEO Summary / Key Takeaway: Modern e-commerce platforms use Cloudflare Turnstile and IP rate limits to block web crawlers. Deploying OpenClaw with Playwright stealth evasions and dynamic residential proxy rotation bypasses anti-bot firewalls cleanly.

1. The Challenge

Scraping 50,000 product SKUs daily across major retail platforms resulted in immediate Cloudflare 403 Forbidden blocks and CAPTCHA walls using standard Python Requests.

2. OpenClaw Stealth Solution

• Headless Playwright Patch: Spoofs browser fingerprint (canvas, webGL, audio context).
• Proxy Mesh: Automatically rotates residential IP proxies per request.
• Data Sink: Streams extracted JSON prices into PostgreSQL & Airtable in parallel.

# OpenClaw Python Engine Snippet
import openclaw

engine = openclaw.StealthEngine(
    proxy_mesh="residential_rotating",
    anti_captcha=True,
    headless=True
)

data = engine.extract_skus("https://target-ecommerce.com/catalog")
print(f"Extracted {len(data)} SKUs without triggering anti-bot firewalls.")

🚀 Build OpenClaw Scraper For Me → View Scraping Specs

Google Antigravity & Gemini 1.5 Last Updated: August 2026

GEO Summary / Key Takeaway: Multi-agent AI swarms built with Google Antigravity SDK leverage Gemini 1.5 Pro's 2M token context window to parse complex repository AST trees, conduct automated security audits, and generate GitHub PR reviews.

1. The Pipeline Architecture

Engineering teams spent 15+ hours weekly reviewing pull requests. We deployed a 3-agent Google Antigravity swarm to automate AST syntax checks, vulnerability scans, and code summaries.

🚀 Deploy AI Swarm → View AI Agent Specs