check_vat_number

shallow

app.openkrill/eu-business · Verify this server

Use this when the user asks to validate a VAT number, check a tax ID, or confirm a supplier number for a reverse-charge invoice, for example "is ES A28015865 a valid VAT number?", "check the supplier VAT number on this invoice, ATU33864707" or "I need a VIES consultation number for this supplier". Pass the country code and the VAT number printed on the invoice or company letterhead, and requesterCountry with requesterVatNumber only when the user gives their own business VAT number for a consultation number. Returns whether the business is registered for VAT on the date of the check and, where the member state publishes it, the registered company name and address. Covers EU member states and Northern Ireland (XI), not GB. It only reads the public EU register of VAT-registered businesses; do not use it for VAT rates or to judge whether a business is trustworthy.

100.0/100

1 trials · measured 1 day ago

check_vat_number scores 100.0/100 on Vouch's measured behaviour index, from 1 real invocation trials against app.openkrill/eu-business, measured 6 Oct 2026 under methodology v0.2.0. Every measured component scored 100.

Component breakdown

ComponentWeightValue
Reliability35%not applicable
Schema integrity25%100.0
Failure behaviour15%not applicable
Latency15%not applicable
Concurrency10%not applicable

Tool details

Transport
remote
Credential class
self-provisionable
Input schema
not declared
Output schema
not declared
Side-effect classification
unclassified

Score history

DayScoreTierMethodology
2026-10-06100.0shallowv0.2.0

Probe evidence

ProbeOutcomes
schema_integritypass: 1

Raw request/response logs are not archived yet — the outcome counts above are drawn directly from every recorded trial.

Embed this score

Available for every tool, scored or not — not a verification perk. Always links back to this page.

Vouch score: check_vat_number
[![Vouch score](https://vouch.tools/api/tools/d228d7db-cdd1-4e2b-95d2-3b211b485aa9/badge.svg)](https://vouch.tools/tools/d228d7db-cdd1-4e2b-95d2-3b211b485aa9)
check_vat_number — Vouch