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io.github.whetstone-tools/whetstone-mcp

Official registry Other

U.S. public-records: business registration (KYB), filings, watchlist screening, federal awards.

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package whetstone-mcp
Claude Code 
claude mcp add whetstone-mcp -e 'APIFY_TOKEN=<your apify_token>' -- npx -y whetstone-mcp@0.1.2
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "whetstone-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "whetstone-mcp@0.1.2"
            ],
            "env": {
                "APIFY_TOKEN": "<your apify_token>"
            }
        }
    }
}

Environment variables

  • APIFY_TOKEN required secret Apify API token; actor runs bill to your Apify account (pay-per-result).

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. whetstone-mcp
  2. Tools
  3. Setup
  4. Notes & limits
  5. License

whetstone-mcp

An MCP server for U.S. public-records data — so AI agents and MCP clients (Claude Desktop, Cursor, etc.) can look up business records, screen names against government watchlists, and pull federal awards directly.

Powered by the Whetstone actors on Apify. All data is official U.S. government public-record data.

Tools

ToolWhat it does
business_searchOfficial Secretary of State business registration (KYB) across 25 states
new_business_filingsNewly registered businesses from 10 states, windowed by date
watchlist_screenScreen a name against 12 federal watchlists (OFAC, BIS, State Dept)
federal_awardsA company's federal contracts, grants, and loans (USAspending.gov)

Setup

You need a free Apify API token (apify.com → Settings → API & Integrations). Runs bill to your Apify account under pay-per-result pricing (~$2 per 1,000 result rows; the free tier covers light use).

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "whetstone": {
      "command": "npx",
      "args": ["-y", "whetstone-mcp"],
      "env": { "APIFY_TOKEN": "apify_api_your_token_here" }
    }
  }
}

Restart Claude Desktop. The four tools then appear and the agent can call them.

Any MCP client

Run the server over stdio:

APIFY_TOKEN=apify_api_... npx -y whetstone-mcp

Notes & limits

  • Heavy queries can be slow. Business search across all 25 states (or filings across all
    1. runs synchronously and may approach the 300-second limit. Pass a states subset for faster, cheaper runs.
  • Name-based matching. Watchlist and federal-award results are matched by name and are not identity confirmation — verify a hit against the official source before acting. Nothing here is legal, compliance, or financial advice.
  • A free, interactive version of the combined lookup is at whetstonetools.com/company-check, and there's also an n8n community node.

License

MIT © Whetstone Tools · support@whetstonetools.com

Frequently asked questions

What is io.github.whetstone-tools/whetstone-mcp?

U.S. public-records: business registration (KYB), filings, watchlist screening, federal awards.

How do I install io.github.whetstone-tools/whetstone-mcp?

It runs on your machine. In Claude Code: claude mcp add whetstone-mcp -e 'APIFY_TOKEN=<your apify_token>' -- npx -y whetstone-mcp@0.1.2. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.whetstone-tools/whetstone-mcp need an API key?

Yes. It expects APIFY_TOKEN, which you set in its configuration.

Is io.github.whetstone-tools/whetstone-mcp open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains io.github.whetstone-tools/whetstone-mcp?

It is published by whetstone-tools. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.