`cobalt_tin_verify`

Pack: cobalt · Endpoint: https://gateway.pipeworx.io/cobalt/mcp

Verify a business TIN/EIN against IRS records — confirms a 9-digit EIN matches the legal business name on file with the IRS. Returns match status, IRS code/reason and last-checked date. Synchronous (<5s). Example: cobalt_tin_verify({ tin: “123456789”, businessName: “Acme Corp”, _apiKey: “your-key” })

Parameters

Name	Type	Required	Description
`tin`	string	yes	The 9-digit EIN/TIN, digits only (no dashes), e.g. “123456789”.
`businessName`	string	yes	The legal business name exactly as filed with the IRS.
`_apiKey`	string	yes	Cobalt Intelligence API key.

Example call

Arguments

{
  "tin": "123456789",
  "businessName": "Acme Corp",
  "_apiKey": "your-cobalt-api-key"
}

curl

curl -X POST https://gateway.pipeworx.io/cobalt/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"cobalt_tin_verify","arguments":{"tin":"123456789","businessName":"Acme Corp","_apiKey":"your-cobalt-api-key"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('cobalt_tin_verify', {
  "tin": "123456789",
  "businessName": "Acme Corp",
  "_apiKey": "your-cobalt-api-key"
});

Connect

Add this to your MCP client config, or use one-click install buttons:

{
  "mcpServers": {
    "cobalt": {
      "url": "https://gateway.pipeworx.io/cobalt/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

cobalt_tin_verify