Rate limits, quotas and caching to scale a BCE/KBO application: reference architecture
Your app queries the BCE/KBO API at volume — how to avoid 429s, control costs and guarantee latency? Reference architecture with multi-layer cache, request queue, observability and webhooks. Concrete patterns and target numbers.
KBO/BCE API in Node.js and TypeScript: modern integration guide with examples
Integrate the BCE/KBO API into a modern Node.js / TypeScript stack. Full tutorial: typed client with native fetch, retry, LRU cache, Next.js and Express integration, webhook handling. All code compiles in strict mode.
BCE/KBO API in Python: complete tutorial with FastAPI, async/await and copy-paste code
Integrate the BCE/KBO API in Python in under an hour. Full tutorial: setup, httpx async requests, FastAPI wrapper, error handling, exponential retry, local cache. All code is directly copy-paste-able.
Official KBO API vs third-party APIs: limitations of the public BCE service and why move to a modern API
The official SPF Economie API is free — but it's SOAP, without webhooks, without UBO or Peppol enrichment, and without SLA. Here is why 80% of serious projects end up migrating to a third-party API, and how to evaluate if it's your case.
API v2: Reference Data, VAT validation and real-time webhooks
Company Belgium API v2 adds Reference Data endpoints (NACE, legal forms), Belgian VAT validation, payment risk scoring and HMAC-signed webhooks.
Batch processing with the BCE/KBO API: practical guide
How to process thousands of companies efficiently? Complete guide to batch processing with the BCE/KBO API: import, validation and mass enrichment.
Optimizing your API calls: rate limiting and performance
Learn how to optimize your BCE/KBO API calls: rate limiting management, caching, pagination and performance best practices.