Webhook integration: automate exchanges between tools in real time
Webhooks let one application notify another as soon as an event occurs, instead of waiting for it to check. For a Belgian SME or integrator, a solid webhook integration keeps a CRM, an ERP or an invoicing tool in sync whenever information changes, for example a company's status in the Crossroads Bank for Enterprises.
How webhooks work
The principle fits in one sentence: you subscribe to events, and the provider sends a POST request to your URL whenever one of them happens. Polling, by contrast, forces your system to query the API at regular intervals, often for nothing. Your team no longer needs scheduled scripts that keep checking for changes. Webhooks therefore reduce the number of calls, ease your quotas and shorten the delay between a change and its processing. For example, a company.status_changed event can update a customer record in your CRM automatically.
Each message contains an event type and the relevant data, usually in JSON. Moreover, a serious provider signs its deliveries, for instance with HMAC SHA-256 and a shared secret, so that you can verify their origin. Your application then reads the content, checks the signature and triggers the planned action: updating a record, alerting a salesperson or blocking an invoice. That loop sits at the heart of every webhook integration.
Best practices for a reliable webhook integration
First, always verify the signature before processing a message, and expose your URL over HTTPS only. Second, respond quickly with a 2xx status code, then process the content in the background: slow handling triggers needless resends. In addition, design for idempotency, because the same event can arrive twice after a retry. Finally, log every delivery so that your webhook integration stays easy to audit after an incident. Keep these handlers small and easy to test.
On the provider side, check the retry policy. A good service retries with an increasing delay, for example for up to 24 hours, and offers an admin page to replay an event manually. Also keep your secret safe and rotate it at the slightest doubt of a leak. Finally, test your webhooks in a staging environment before going live. A well-documented webhook integration also makes future changes easier for your team.
Our webhook integration article and when to call on us
Our article on the Belgian company data API v2 presents the real-time events on offer: company.updated, company.status_changed, company.filing_deposited, establishment.created and establishment.closed. It also details the signature through the X-Espero-Signature header, exponential retries, NACE reference data, VAT number validation and payment risk scoring. It targets developers, ERP integrators and data teams who no longer want to code their own connector.
Call in a professional if you need a webhook integration that feeds your ERP, CRM or data warehouse without writing your own connector for company registry data. The Espero-Soft team builds custom integrations and web platforms, with clean handling of errors, retries and security. We also help you select only the events you need, which keeps message volumes under control.
