W System API: Postman collection

Postman collection and environment for the W System API: EU VAT (VIES) and EORI validation, company-register lookup, sanctions screening, KYB, and EU e-invoicing (EN 16931 / XRechnung validation, UBL creation, Peppol routing).

Use it

1. In Postman: Import → Link and paste https://raw.githubusercontent.com/wsystemdev/wsystem-postman/main/wsystem.postman_collection.json
2. Optionally import wsystem.postman_environment.json.
3. Send a request. Without a key you get 20 free calls/day per IP. For more, get a free key (500 units/month, email only, no card) at https://api.wsystem.dev/account/free-key?ref=postman-github and put it in the apiKey variable (sent as X-API-Key).

Good first requests: VAT → Validate one EU VAT number, E-invoice → "Can I e-invoice this company?", E-invoice → Validate an EU e-invoice.

Also available: OpenAPI spec · JS/TS SDK (npm i wsystem) · Docs · Pricing

The collection is generated from the OpenAPI spec (openapi2postmanv2, tag folders, example values).

License

MIT