44API integrations

Connect 44API to any other app, or use it from your AI client over MCP. 44API is a VAT & Tax ID Validation service that validates VAT numbers and Tax IDs in 50+ countries with real-time verification.

Connects with an API key44api.dev

3 actions

What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.

Build solutions, not workarounds.

What do you want to automate with 44API?

Ask the assistant

Connect your AI client

Give your AI client this address.

https://mcp.apiant.ai

Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.

Set it up in your client

Claude Code

Run this in the directory you want to work in.

claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai

Start Claude Code there, approve the server, and sign in in the browser page it opens.

Claude Code guide

Claude, web and desktop

Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.

Setup guide

Cursor

Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.

Setup guide

Zed

Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.

Setup guide

Codex and the ChatGPT desktop app

Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.

Setup guide

Any other MCP client

Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.

Setup guide

Popular

44API with the apps people pair it with most

Pair it

Connect 44API with another app

What your agent can do with 44API

Triggers and actions 3 actions

Action
Find VAT Validation
Looks up a VAT number and returns validation result.
Action
Validate VAT Numbers Batch
Validates multiple VAT numbers at once (max 10).
Action
Validate VAT Tax Number
Validates a VAT, GST, or tax ID number and returns company information. Supports 50+ countries including EU, UK, Switzerland, Norway, and more.

Related apps

What our customers say

Questions

44API, answered

Is there a 44API MCP server?

APIANT's MCP server at https://mcp.apiant.ai works with 44API. Add that address to any AI client that takes a remote MCP server, sign in once in your browser, and your client can build, test and run automations that use 44API. Nothing to install.

What can your agent do in 44API?

Any of 44API's 3 actions, including Find VAT Validation, Validate VAT Numbers Batch and Validate VAT Tax Number. Your agent maps the data both ways and tests every scenario before it ships.

Which apps can 44API connect to?

Any app in the catalog; the list on this page pairs 44API with each of them. If the other app is missing, point your agent at its API documentation and it builds the connector.

What happens when something fails?

Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.

Is there a free plan?

Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.