FastCAC

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com.fastcac/cacv1.0.1 Domain verified

Nigeria CAC tools: name checks, fees, annual returns, register search, TIN, NIN requests.

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Try it

Call this server's tools from your browser. Nothing to install.

https://api.fastcac.com/mcp

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

calculate_cac_fees Read-only

CAC's official registration fees, line by line, for a business name, a limited company (by authorised share capital, default ₦1,000,000) or an NGO (Incorporated Trustees). Use it for any question about what CAC charges to register. These are government fees, not FastCAC's price.

entitystring, required

share_capitalnumber

Companies only: authorised share capital in naira.

Install

Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.

Run in a terminal

claude mcp add --transport http cac https://api.fastcac.com/mcp

Tools (10)

Tool list last changed Nov 3, 2026.

calculate_cac_fees

read-only

Argument	Type	Description
entity*	string
share_capital	number	Companies only: authorised share capital in naira.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "entity"
  ],
  "properties": {
    "entity": {
      "enum": [
        "business_name",
        "company",
        "ngo"
      ],
      "type": "string"
    },
    "share_capital": {
      "type": "number",
      "description": "Companies only: authorised share capital in naira."
    }
  }
}

check_annual_returns

For a CAC business name: which annual returns are due from its registration date, which are overdue, CAC's estimated charge, and when the next one is due. Ask for the registration date (it's on the certificate). Without the date, point them to the annual returns checker page, which looks it up by BN number.

read-only

Argument	Type	Description
registration_date*	string	YYYY-MM-DD, from the CAC certificate.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "registration_date"
  ],
  "properties": {
    "registration_date": {
      "type": "string",
      "description": "YYYY-MM-DD, from the CAC certificate."
    }
  }
}

check_business_name_compliance

Run a proposed business name and its exact CAC line of business through CAC's own compliance and similarity checker. Returns compliance/similarity scores and, when the name is too close to an existing one, CAC's suggested alternatives. Slower and rate limited: use it for a name the user is seriously considering.

read-only

Argument	Type	Description
proposed_name*	string
line_of_business*	string	An exact entry from CAC's line-of-business picklist.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "proposed_name",
    "line_of_business"
  ],
  "properties": {
    "proposed_name": {
      "type": "string"
    },
    "line_of_business": {
      "type": "string",
      "description": "An exact entry from CAC's line-of-business picklist."
    }
  }
}

check_name_availability

Search CAC's public registry for names matching or similar to a name, across every registration type (business names, companies, LLPs, trustees). CAC rejects a new name that's too close to any of them, active or inactive. close_matches share a distinctive word with the name: any close match means the name is at risk. other_matches only share generic words. An empty close_matches usually means it's available, but CAC makes the final call.

read-only

Argument	Type	Description
name*	string	The business name to check.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "name"
  ],
  "properties": {
    "name": {
      "type": "string",
      "description": "The business name to check."
    }
  }
}

generate_business_names

Brainstorm CAC-registrable business names for an idea. Each name comes back already checked against CAC's registry, with `availability`: likely_available, similar_names_exist, or unchecked (CAC's search was busy). Present the results as they are; don't re-check them with check_name_availability unless the user asks about a specific name.

read-only

Argument	Type	Description
idea*	string	Short description of the business.
line_of_business	string	Optional CAC line of business to keep every name in.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "idea"
  ],
  "properties": {
    "idea": {
      "type": "string",
      "description": "Short description of the business."
    },
    "line_of_business": {
      "type": "string",
      "description": "Optional CAC line of business to keep every name in."
    }
  }
}

get_cac_tax_id

Get the Tax ID (TIN) CAC's public search shows for a registered business. Takes company_id, rc_number and classification_id from a search_cac_register result. Returns { name, rc_number, tax_id }, or an error 'not_found' when CAC has none.

read-only

Argument	Type	Description
rc_number*	string	rc_number from search_cac_register, e.g. '1234567'.
company_id*	integer	company_id from search_cac_register.
classification_id*	integer	classification_id from search_cac_register.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "company_id",
    "rc_number",
    "classification_id"
  ],
  "properties": {
    "rc_number": {
      "type": "string",
      "pattern": "^[A-Za-z0-9-]{1,20}$",
      "description": "rc_number from search_cac_register, e.g. '1234567'."
    },
    "company_id": {
      "type": "integer",
      "minimum": 1,
      "description": "company_id from search_cac_register."
    },
    "classification_id": {
      "type": "integer",
      "maximum": 5,
      "minimum": 1,
      "description": "classification_id from search_cac_register."
    }
  },
  "additionalProperties": false
}

get_nin_request_status

Where a request from start_nin_request stands: status (waiting_for_person, started, settling, verified, failed, expired, paid, delivered, delivery_failed), next_step in words, the products and their naira prices. Never the NIN or the person's details: those go only to the person.

read-only

Argument	Type	Description
request_handle*	string	From start_nin_request.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "request_handle"
  ],
  "properties": {
    "request_handle": {
      "type": "string",
      "maxLength": 64,
      "description": "From start_nin_request."
    }
  },
  "additionalProperties": false
}

search_cac_register

Search the Corporate Affairs Commission's (CAC) public register for businesses already registered in Nigeria, by name or by RC/BN number. Returns `results`: name, rc_number (the BN number for a business name), registration_date, classification, nature_of_business, status (e.g. ACTIVE or INACTIVE), company_id and classification_id. This lists what exists; it isn't an availability check (use check_name_availability or check_business_name_compliance). An `error` never means there's no match.

read-only

Argument	Type	Description
query*	string	A business name, or an RC/BN number such as '1234567'.
entity_type	string	Limit to one kind of registration. Defaults to ALL.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "maxLength": 100,
      "minLength": 3,
      "description": "A business name, or an RC/BN number such as '1234567'."
    },
    "entity_type": {
      "enum": [
        "ALL",
        "BUSINESS NAME",
        "COMPANY",
        "INCORPORATED TRUSTEE",
        "LIMITED PARTNERSHIP",
        "LIMITED LIABILITY PARTNERSHIP"
      ],
      "type": "string",
      "description": "Limit to one kind of registration. Defaults to ALL."
    }
  },
  "additionalProperties": false
}

search_line_of_business

Find exact entries in CAC's line-of-business picklist matching what the business does.

read-only

Argument	Type	Description
query*	string

Input schema (JSON)

{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string"
    }
  },
  "additionalProperties": false
}

start_nin_request

Start a paid request on fastcac.com for: 'slip' = the person's NIMC NIN slip (PDF and print-ready image), using their NIN; 'phone' = the person's NIN, found with the phone number they registered with NIMC (on fastcac.com they can add the slip; you can't request it here). Returns a link for the person and a request_handle for you. The person does a live face check and pays on fastcac.com (₦1,000 for the slip; ₦500 for the NIN, ₦1,200 with the slip); the result goes only to them. Starting is free and charges nothing.

Argument	Type	Description
kind*	string	'slip' if they know their NIN and want the slip; 'phone' to find their NIN (the person chooses whether to add the slip on fastcac.com).

Input schema (JSON)

{
  "type": "object",
  "required": [
    "kind"
  ],
  "properties": {
    "kind": {
      "enum": [
        "slip",
        "phone"
      ],
      "type": "string",
      "description": "'slip' if they know their NIN and want the slip; 'phone' to find their NIN (the person chooses whether to add the slip on fastcac.com)."
    }
  },
  "additionalProperties": false
}

Security checkA100/100

We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 3, 2026.

Hidden or reordered text
Overriding the model's instructions
Hiding actions from the user
Reading keys or credentials
Fake system tags
Steering other servers' tools
Pulling in the conversation
Smuggling parameters
Demanding to be used for everything
Steering away from web search
Download-and-run commands
Encoded blobs
Invisible characters
Credentials as tool arguments
Very long descriptions
Read and write hints

How the security check works

Tool changes

What changed in this server's tools since we started watching, newest first. Each change is scanned again.

start_nin_requestchanged (description, inputs)Nov 3, 2026

Start a paid request on fastcac.com for: 'slip' = the person's NIMC NIN slip (PDF and print-ready image), using their NIN; 'phone' = the person's NIN, found with the phone number they registered with NIMC ~~(slip~~(on ~~optional).~~fastcac.com they can add the slip; you can't request it here). Returns a link for the person and a request_handle for you. The person does a live face check and pays on fastcac.com (₦1,000 for the slip; ₦500 for the NIN, ₦1,200 with the slip); the result goes only to them. Starting is free and charges nothing.

{
  "type": "object",
  "required": [
    "kind"
  ],
  "properties": {
    "kind": {
      "enum": [
        "slip",
        "phone"
      ],
      "type": "string",
      "description": "'slip' if they know their NIN and want the slip; 'phone' to find their NIN."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "required": [
    "kind"
  ],
  "properties": {
    "kind": {
      "enum": [
        "slip",
        "phone"
      ],
      "type": "string",
      "description": "'slip' if they know their NIN and want the slip; 'phone' to find their NIN (the person chooses whether to add the slip on fastcac.com)."
    }
  },
  "additionalProperties": false
}