Developer resources for reliable and secure integrations
Our developer resources bring together what technical teams need to connect their applications to Belgian company data. You will find API v2, webhooks and advice for a reliable integration. SME managers will also see what such a project involves. It also explains when outside help makes sense and how we can support your team.
What our developer resources offer
Our API v2 provides reference data that many software tools need: NACE codes, legal forms, Belgian VAT number validation and payment risk scoring. Webhooks then report changes in real time, without polling the service in a loop. As a result, your CRM, invoicing tool or platform stays up to date automatically. You save development time and reduce data entry errors. Structured responses also make integration easier in most programming languages.
In practice, this data helps you pre-fill a sign-up form from a company number, check a customer before invoicing or monitor how a supplier evolves. However, data about a sole trader can count as personal data under the GDPR. Inform the people concerned and keep the data only as long as necessary. Always check whether you really need each field before storing it, since a clear data map also simplifies your privacy policy.
Best practices from our developer resources
First, keep your access keys on the server, never in browser code or a mobile app. Next, respect call limits and plan spaced retries in case of temporary errors. Cache frequent responses to limit the number of calls. For webhooks, respond quickly, process each event only once even if it arrives twice, and verify its authenticity with the method the provider offers. Finally, encrypt all communication over HTTPS. Store secrets in environment variables or a dedicated vault rather than in configuration files.
Work in a test environment before going live. Log calls and errors without storing unnecessary sensitive data. Set up alerts when the error rate rises so that you react before your users notice. Also follow version changes: a new API version can change a response format and break an integration that nobody monitors. Use this list as a checklist whenever you work with our developer resources or any other service. Review these points again after every major update.
Our articles for developers and how Espero-Soft can help
Our article on API v2 and webhooks presents NACE reference data and legal forms, Belgian VAT validation, payment risk scoring and real-time webhooks. It also shows how to start an integration with just a few lines of code. It is the first article in our developer resources and gives technical teams a concrete starting point to evaluate the service. Read it before planning your own integration.
Call on a professional if your team lacks time or if the integration affects critical processes such as invoicing. At Espero-Soft, we build web platforms and custom connectors, from analysis to maintenance. We document each integration so that your developers can extend it, and we explain every technical choice clearly. For SMEs without a technical team, we can also handle the full integration.
