AI apps

FastCAC in Claude and ChatGPT

Ask your AI app to check a business name, work out CAC fees or register your business. It uses FastCAC to do it.

FastCAC account

https://api.fastcac.com/mcp/account

Everything below, plus your own businesses. You sign in to FastCAC once and choose what the app may do.

FastCAC tools

https://api.fastcac.com/mcp

The free tools only. No account and no sign-in.

Add it to Claude

  1. Open Customize, then Connectors, and choose Add custom connector.
  2. Name it FastCAC and paste a server URL from above.
  3. For the account server, choose Register automatically as the OAuth client, then sign in to FastCAC and allow it.
  4. In a chat, open + then Connectors and turn FastCAC on.

Add it to ChatGPT

  1. In settings, open Connectors and turn on developer mode under Advanced.
  2. Create a connector named FastCAC with a server URL from above.
  3. For the account server, choose OAuth, then sign in to FastCAC and allow it.
  4. In a chat, turn FastCAC on from the tools menu.

Other apps that support remote MCP servers work the same way. In an AI browser, the tools on fastcac.com/tools work without adding anything.

Free tools

Name availability
Is a business name free on the CAC register, and how close are the nearest matches.
Name rules
Does a proposed name break CAC's naming rules.
Name ideas
Business name suggestions for what you do.
Line of business
CAC's exact wording for what your business does.
CAC fees
What a business name or company registration costs, line by line.
Annual returns
Which annual returns a registered business owes, and the penalties.
Register search
Find a registered business by name or RC/BN number.
Tax ID
The TIN for a registered business.
NIN slip and NIN
Start a request; you finish the face check and payment on fastcac.com.

With your account

Your businesses
List them, see where each registration is, and rename or delete a draft.
Register a business
Start one and fill in the form from what you tell the app.
Pay, upload and verify
The app gives you a FastCAC link. You pay, upload documents or verify your NIN there.
Documents and status
Get your CAC certificate and documents, and refresh the status from CAC.
Account
Credits, subscription, notifications and share links.

You stay in control

The app never pays, uploads or sees your NIN. Those steps open on FastCAC for you. Anything that changes a paid registration asks you first.

Disconnect any time

Remove an app under Settings, Connected apps on platform.fastcac.com. Access also ends after 90 days. See our privacy policy.

Help

Email hello@fastcac.com. The app can't file with CAC for you; FastCAC does that once you pay.