VAT Sense

# VAT Sense > Developer-friendly REST API for VAT/GST compliance. Validate VAT and EORI numbers, look up VAT/GST rates for 179 countries by country or product type, convert currencies, and generate VAT-compliant invoices. Used by Oracle, Siemens, and thousands of developers worldwide. Sub-15ms response times, 99.9%+ uptime, 256-bit SSL on all plans including free. AI agents can obtain a temporary sandbox API key to test VAT Sense without creating an account. See the [full documentation](https://vatsense.com/llms-full.txt) for details, or POST to `https://api.vatsense.com/1.0/sandbox/key` to get a key immediately. ## Documentation - [Full API documentation for LLMs](https://vatsense.com/llms-full.txt): Complete API reference in a single document - [OpenAPI specification](https://vatsense.com/openapi.yaml): Machine-readable OpenAPI 3.0 spec (importable into Postman, Insomnia, etc.) - [Postman collection](https://www.postman.com/vatsense/vat-sense-api/collection/7415051-77f802c0-ba4d-4456-8d01-f3a4dc222604): Pre-built collection with all API endpoints, ready to fork and use - [Postman workspace](https://www.postman.com/vatsense/vat-sense-api): Official VAT Sense workspace on the Postman Public API Network - [API Reference](https://vatsense.com/documentation): Full API docs covering authentication, endpoints, and code examples - [API Reference - Authentication](htt […gekürzt]