How We Shipped a Full-Stack Compliance Platform in One Afternoon
A deep dive into how Synq's 7-agent crew built Synco — 133 files, 16K lines of code, 3 government data sources — in a single session.
A client approached us with a straightforward brief: build a tool that monitors Belgian company compliance across three government data sources — KBO (company registry), Staatsblad (official gazette), and NBB (national bank filings). The traditional quote from agencies: €5K–15K and 2–6 weeks.
We pointed our Synq crew at it. Here's what happened.
The Brief
Belgian companies face complex compliance requirements across multiple government databases. Checking a single company's status means manually navigating three separate portals — each with different APIs, formats, and update schedules. Our client needed a unified view.
The Agent Crew in Action
Seven specialist agents worked in parallel, coordinated by Synq's orchestration layer:
1. Architect
Designed the domain model first — Company, Publication, Filing, and Mandate entities. Chose a clean architecture with clear separation between data clients and business logic. Decision: SOAP for KBO (their only API), web scraper for Staatsblad (no API), REST for NBB.
2. Backend Engineer
Built three async data clients in Python — a SOAP client for KBO, a web scraper with retry logic for Staatsblad, and a REST client for NBB's financial filings API. Created a reconciliation engine that cross-references data across all three sources. FastAPI endpoints with proper error handling and rate limiting.
3. Frontend Engineer
Shipped a Next.js 15 + React 19 dashboard with shadcn/ui components. Real-time search across all monitored companies, filterable by compliance status. Responsive design that works on desktop and mobile.
4. QA Engineer
Validated every endpoint with integration tests. Checked edge cases — what happens when KBO returns partial data? When Staatsblad is down? When a company has no NBB filings? All covered.
5. DevOps Engineer
Docker Compose setup for both local development and production. PM2 process management for the scheduler that runs daily data refreshes. Automated deployment pipeline.
6. Security Engineer
OWASP audit on all endpoints. Input validation on search queries. Rate limiting on external API calls to avoid getting blocked.
7. Tech Lead
Code review pass on the final output. Ensured consistent patterns across backend and frontend. Verified type safety end-to-end.
The Numbers
| Metric | Value |
|---|---|
| Files shipped | 133 |
| Lines of code | 16,000 |
| Data sources integrated | 3 |
| Time to production | ~4 hours |
What Would This Cost Elsewhere?
| Provider | Cost | Timeline |
|---|---|---|
| Senior Freelance | €3K–6K | 5–10 days |
| Dev Agency | €5K–15K | 2–6 weeks |
| In-house Team | €15K/month | 2–4 weeks |
| Synq | 1 afternoon | — |
The Stack
- >Backend: FastAPI, PostgreSQL, Python async clients
- >Frontend: Next.js 15, React 19, shadcn/ui, TypeScript
- >Infrastructure: Docker Compose, PM2, automated scheduler
- >Export: PDF, Excel, HTML with diff highlighting
Key Takeaway
This wasn't a prototype or a demo. Synco is running in production, processing real compliance data daily. The quality gate pattern — where every agent's output passes through review before merge — is what makes this possible. AI agents without governance produce demos. AI agents with governance produce products.
_Want to ship your next product this fast? Join the waitlist._
Ready to build with AI agents?
See how Synq orchestrates AI-powered delivery pipelines.
