Whetstone Mcp

io.github.whetstone-toolsPublished by GitHub account whetstone-toolsv0.1.2Updated Oct 24, 2026

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

VerifiedSTDIODesktop onlyFinanceSecurity & MonitoringBusiness & Commerce

Overview

AI-generated overview

Lets an assistant look up U.S. public records: business registrations, new filings, federal watchlist screening, and federal awards.

What you can do
Whetstone MCP exposes four tools backed by Apify actors over official U.S. public-record data. business_search returns Secretary of State business registration (KYB) records across 25 states, and new_business_filings lists newly registered businesses from 10 states within a date window. watchlist_screen checks a name against 12 federal watchlists such as OFAC, BIS and State Department lists, and federal_awards pulls a company's federal contracts, grants and loans from USAspending.gov.
When to use it
Use it when an assistant needs quick public-record lookups on companies or individuals: basic KYB checks, monitoring new business registrations, screening names against government watchlists, or reviewing federal contract and grant history. It suits research and due-diligence drafting rather than authoritative verification.
Requirements
Runs locally over stdio, typically via npx whetstone-mcp. Requires Node.js and a required APIFY_TOKEN environment variable holding an Apify API token; runs bill to that Apify account under pay-per-result pricing. Network access is needed for the Apify actors.
Before you install
APIFY_TOKEN is a secret and its use spends money on your Apify account (roughly $2 per 1,000 result rows), so heavy queries can be costly and slow. Watchlist and award results are name-based matches, not identity confirmation, and the server provides no legal, compliance or financial advice. Verify any hit against the official source before acting.

Installation

In SourceWeft

  1. Open Whetstone Mcp in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

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:

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:

bash
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 10) 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 · [email protected]

Source: README.md at commit 1dfc861

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v0.1.2LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts