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Validate VAT numbers and look up company details during a call with 44API.

Connect 44API to AgentCalls and your agent can check VAT and tax IDs while it is on the phone. A customer or supplier reads out their VAT number, and the agent confirms whether it is valid and returns any company details your 44API plan makes available. Your team hears the answer without leaving the call or opening a browser. Your agent can also list and manage the IP addresses allowed on your 44API account, if you are on the Enterprise plan.

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What your agent can do with 44API

  • Validate a VAT or tax ID for a supported country during the call
  • Return company name and address when your 44API plan provides them
  • List the IP addresses currently on your account whitelist (Enterprise plan)
  • Add or remove whitelisted IP addresses with a verification step (Enterprise plan)

44API exposes 4 actions. You choose which ones the agent may use and whether each runs during or after the call.

Example calls

Confirming a supplier's VAT number before a purchase order

  1. Caller

    Hi, I'm calling from Brightline Components. We'd like to confirm our VAT number is set up correctly on your side. It's GB 412 893 507.

  2. Agent

    Thanks for calling. Let me check that number now. One moment, please.

  3. Agent

    That VAT number is valid and registered to Brightline Components Ltd, based in Leeds. Is there anything else you need for the purchase order?

  4. Caller

    No, that's everything. Thank you.

A new client checking their details for an invoice

  1. Caller

    I need to make sure my company's VAT ID is right before I send you the invoice. It's DE 276 452 019.

  2. Agent

    Of course. Checking it now.

  3. Agent

    The number is valid. It's registered to Halvorsen Digital GmbH in Munich. Should I note it on your account for future invoices?

  4. Caller

    Yes, please. That helps a lot.

Following up on a previous VAT query

  1. Caller

    Hello, this is Priya from Coastline Traders. We called last week about a VAT number that came back as invalid. Has anything changed?

  2. Agent

    Let me look at that again. Could you read the number to me?

  3. Caller

    It's FR 84 552 318 764.

  4. Agent

    I've checked it again. It is now showing as valid, registered to Coastline Traders SAS in Nantes. You should be able to use it on your invoices from today.

How to connect 44API

  1. 1

    Create your agent

    Sign up to AgentCalls, pick an English or Arabic voice and write what the agent should know and do in plain language.

  2. 2

    Connect 44API

    From Integrations in the dashboard, choose 44API and enter the connection details from your 44API account settings.

  3. 3

    Choose the actions

    In the agent editor, enable the 44API actions the agent may use and set each to run during the call or afterwards. Then test it from your browser.

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Questions, answered.

Does the agent check VAT numbers during the call or after it?

During the call. When a caller gives a VAT or tax ID, your agent validates it while they are still on the line and reads back the result, including any company details your 44API plan returns.

What do I need to connect 44API?

A 44API account and your own credentials from the 44API settings. Sign in to the AgentCalls dashboard, open Integrations, choose 44API, and enter your credentials. Integrations are included from the Growth plan.

Do I need an Enterprise plan for everything?

No. VAT validation works with supported plans. Listing, adding and removing whitelisted IP addresses requires an Enterprise 44API plan, because the API restricts those actions to that tier.

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Put your agent to work with 44API.

Connect in minutes, test from your browser, go live on a number in the US, UK or Gulf. Free to start, no card needed.

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