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Connect44API
Every VAT number, verified
SPIRITT validates VAT and tax IDs with 44API across your checkout, CRM, ledger and supplier records, captures the company details returned, and keeps every record verified on schedule. It also keeps your account's IP allowlist in step with your infrastructure.

What you can do with 44API.

Valid IDs before you invoice
Check any supported country's VAT or tax ID before it reaches an invoice or checkout.
Company details on file
Capture the registered company details 44API returns on your plan alongside each check.
Access under control
List, add and remove allowlisted IPs as your servers change.
Works with your other apps.
Get started in three steps.
01
Open your workspace
Start a workspace for finance, billing or compliance operations.

02
Connect 44API
Add your 44API key and connect the systems where tax IDs live.

03
Automate verification
Describe where IDs enter. SPIRITT validates, records and rechecks them.

Hand over a mission.
Choose a mission. Make it yours.
Put 44API to work.
Verify every tax ID automatically.
Questions
44API, with SPIRITT.
01What does a 44API check return?+
Whether the VAT or tax ID is valid for the country, plus the company details available on your 44API plan.
02Which countries are supported?+
The countries 44API supports for VAT and tax ID validation. SPIRITT passes the two-letter country code with each number, using EL for Greece.
03Where can SPIRITT run checks?+
Wherever IDs enter your business: Stripe customers, HubSpot or Salesforce accounts, Xero contacts, Shopify orders, signup forms and supplier databases.
04Can SPIRITT keep records verified over time?+
Yes. It revalidates on a schedule, keeps a history of results and alerts owners when a number stops validating.
05Can SPIRITT manage the IP allowlist?+
Yes, on 44API plans that include it. SPIRITT lists, adds and removes allowlisted IPv4 and IPv6 addresses as your servers change.
06What do I need to connect?+
Your 44API key, plus access to the systems that hold the tax IDs.



