MCP Servers

mcp-opencorporates

Search companies, officers, and filing history across 140+ jurisdictions worldwide using the OpenCorporates API.

README

mcp-opencorporates

MCP server for OpenCorporates — the world's largest open database of companies. Search companies, officers, and filing history across 140+ jurisdictions worldwide.

Install

npx -y @gonzih/mcp-opencorporates

Claude Desktop config

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "opencorporates": {
      "command": "npx",
      "args": ["-y", "@gonzih/mcp-opencorporates"],
      "env": {
        "OPENCORPORATES_API_KEY": "your_api_key_here"
      }
    }
  }
}

The OPENCORPORATES_API_KEY is optional — without it, the free tier is used (rate-limited). Get an API key at opencorporates.com.

Tools

`search_companies`

Search companies by name across all jurisdictions or within a specific one.

Parameter	Type	Required	Description
`q`	string	yes	Company name or search query
`jurisdiction_code`	string	no	Filter by jurisdiction (e.g. `us_de`, `gb`, `de`)
`page`	number	no	Page number for pagination

`get_company`

Get full details for a company by jurisdiction code and registration number.

Parameter	Type	Required	Description
`jurisdiction_code`	string	yes	Jurisdiction code (e.g. `us_de`, `gb`)
`company_number`	string	yes	Company registration number

`search_officers`

Search for officers (directors, shareholders, agents) across all companies.

Parameter	Type	Required	Description
`q`	string	yes	Officer name or search query
`jurisdiction_code`	string	no	Filter by jurisdiction
`page`	number	no	Page number for pagination

`get_company_officers`

Get all officers for a specific company.

Parameter	Type	Required	Description
`jurisdiction_code`	string	yes	Jurisdiction code
`company_number`	string	yes	Company registration number
`page`	number	no	Page number for pagination

`get_company_filings`

Get the filing history for a company.

Parameter	Type	Required	Description
`jurisdiction_code`	string	yes	Jurisdiction code
`company_number`	string	yes	Company registration number
`page`	number	no	Page number for pagination

Jurisdiction codes

Common codes:

Code	Jurisdiction
`us_de`	Delaware, USA
`us_ca`	California, USA
`us_ny`	New York, USA
`gb`	United Kingdom
`de`	Germany
`fr`	France
`au`	Australia
`ca_on`	Ontario, Canada

Full list: opencorporates.com/jurisdictions

API key setup

The free tier works without an API key but is rate-limited. For higher limits:

Sign up at opencorporates.com
Set OPENCORPORATES_API_KEY env var in your Claude Desktop config

API reference

Full API documentation: api.opencorporates.com/documentation/API-Reference

License

MIT

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