FastCAC MCP server

Which MCP servers are FastCAC's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-11-03

← Back to FastCAC

Whose server it is

Registry namecom.fastcac/cacverified in the MCP registry

The registry name sits under fastcac.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-11-03

Stateanswerschecked 2026-11-03
Tools10
Server calls itselffastcac
Protocol version2025-06-18

On 2026-11-03 the server answered initialize and tools/list without a sign-in. First answer in 475 ms.

Should an agent connect itNot proven either way yet

Whether its tools do the product's job has not been judged yet.
Checked on 1 of the 7 days it takes to judge reliability.

Once connected

For "check whether a business name is available with CAC", the likely first call is check_name_availability.
Parameters are untyped or undescribed in 3 of 10 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 1, the first on 2026-11-03

INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
Answeredmeasuring1 of the 7 daily checks it takes to print a share
Median first answer478 ms
Space in an agent's context≈ 1,595 tokensthe definitions of all its tools (10), which an agent carries on every turn
Tool definitionsA · 95 of 100
Typed results10 of 10 toolsdeclared outputSchema: results come typed, read once

Parameters without a description: in 3 of 10

What an agent can do with it

can do · check whether a business name is available with CAC
not sure · file a business registration and get the CAC certificate
not sure · verify a business's officers against the CAC register

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers10 tools · read 2026-11-03

calculate_cac_fees
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…
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…
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…
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…
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…
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.
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…
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…
search_line_of_business
Find exact entries in CAC's line-of-business picklist matching what the business does.
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 (slip optional). Returns a link…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "cac": {
      "type": "http",
      "url": "https://api.fastcac.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

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

Add to Cursor Add to VS Code

claude.ai, ChatGPT and other clients: add https://api.fastcac.com/mcp as a custom connector in the settings.

Other servers listed as FastCAC's

com.fastcac/accountanswers, requires sign-inverified in the MCP registry

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.