vatverify.dev valid
vatverify
REST API for VAT number validation across 32 countries (EU-27, UK, Switzerland, Liechtenstein, Norway). Real checksum algorithms, 30-day caching, and a tax-rules engine.
- Authority
- 45 reach 0 · trust 5 · quality 25 · freshness 15
- Tier
- listed
- llms.txt
- https://www.vatverify.dev/llms.txt
- llms-full.txt
- https://www.vatverify.dev/llms-full.txt
- Sections
- 7
- Links
- 167
- Size
- 33685 bytes
- Country
- United States Hosting inference
- Hosting country
- United States Hosting inference
- Country evidence
- No published address evidence collected yet
- For agents
- Documentation: developer or product docs worth reading, nothing to call
- First seen
- 2026-10-27T10:04:53.955Z
- Last checked
- 2026-10-27T10:04:58.671Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-27T10:04:53.960Z. Cached copy · Source on vatverify.dev
# vatverify
> REST API for VAT number validation across 32 countries (EU-27, UK, Switzerland, Liechtenstein, Norway). Real checksum algorithms, 30-day caching, and a tax-rules engine.
## Documentation
- [Authentication](https://www.vatverify.dev/docs/authentication): API keys, Bearer tokens, and the difference between test-mode and live-mode keys.
- [Caching](https://www.vatverify.dev/docs/caching): 30-day TTL for valid responses, 24-hour TTL for invalid. How to bypass cache when you need a fresh lookup.
- [Introduction](https://www.vatverify.dev/docs): vatverify, the VAT validation API rebuilt for modern stacks. Get started in under 2 minutes.
- [Quickstart](https://www.vatverify.dev/docs/quickstart): Make your first VAT validation request in under 2 minutes.
- [Rate limits](https://www.vatverify.dev/docs/rate-limits): Monthly quotas per plan, what happens at the limit, and how to read X-RateLimit headers.
- [Reliability](https://www.vatverify.dev/docs/reliability): How to handle registry outages. What live, cached, and degraded mean in API responses.
- [Response format](https://www.vatverify.dev/docs/response-format): Every field in the success, error, and batch response envelopes.
- [Supported countries](https://www.vatverify.dev/docs/supported-countries): vatverify validates VAT numbers across 32 countries via 4 official registries: EU-27, UK, Switzerland, Liechtenstein, and Norway.
- [Test mode](https://www.vatverify.dev/docs/test-mode): Use vtv_test_* keys to validate VAT numbers deterministically, perfect for CI, local dev, and end-to-end tests.
- [Webhooks](https://www.vatverify.dev/docs/webhooks): Receive real-time notifications when validations and batch jobs complete, without polling the API.
- [b2c_not_supported](https://www.vatverify.dev/docs/errors/b2c-not-supported): The /decide endpoint only handles B2B transactions. B2C is not supported in v1.
- [batch_too_large](https://www.vatverify.dev/docs/errors/batch-too-large): The vat_numbers array contains more than 50 items.
- [buyer_vat_not_registered](https://www.vatverify.dev/docs/errors/buyer-vat-not-registered): The buyer_vat number passed to /decide is invalid or not registered with the registry.
- [bzst_rejected](https://www.vatverify.dev/docs/errors/bzst-rejected): BZSt returned an unrecognised status code that does not map to a typed vatverify error.
- [bzst_server_error](https://www.vatverify.dev/docs/errors/bzst-server-error): BZSt accepted the request but returned an internal server error (evatr-2004, evatr-2011, evatr-3011).
- [bzst_session_limit](https://www.vatverify.dev/docs/errors/bzst-session-limit): The API hit the per-session quota for qualified confirmations against BZSt (evatr-0008).
- [bzst_unavailable](https://www.vatverify.dev/docs/errors/bzst-unavailable): BZSt is temporarily unreachable or returned a degradation status (evatr-0011, evatr-1001 through evatr-1004).
- [country_unknown](https://www.vatverify.dev/docs/errors/country-unknown): The country code pa
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Machine-readable: GET /v1/resolve?q=vatverify.dev · GET /v1/domain/vatverify.dev · this page as Accept: application/json or text/markdown · MCP lookup_domain
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