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Counterparty Check

io.github.chtwebllc/counterparty-check · v1.0.1

Check a payee before your agent pays: sanctions, lookalike domains, payment details, invoice fraud.

Connect Remote server

Terminal
claude mcp add --transport http counterparty-check https://counterpartycheck.com/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
~/.cursor/mcp.json
{
  "mcpServers": {
    "counterparty-check": {
      "url": "https://counterpartycheck.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "counterparty-check": {
      "type": "http",
      "url": "https://counterpartycheck.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://counterpartycheck.com/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 4 found in our last check

  • check_counterparty

    Run a full pre-payment risk check on a payee: OFAC sanctions (names and wallets), domain age and email authentication, lookalike domains (vendor impersonation, brand typo-squats, executive impersonation), routing/IBAN/SWIFT/wallet validation, and business-email-compromise signal…

  • screen_sanctions

    Screen a payee name (and optional crypto wallet) against OFAC sanctions lists and embargoed jurisdictions. Faster and cheaper than check_counterparty but does not detect fraud patterns. Costs $0.05 from the API key balance; without a key, the first 3 screens each day are free.

  • check_balance

    Show the remaining prepaid balance on the API key used for this connection. Free.

  • verify_receipt

    Confirm that a receipt returned by a previous check is authentic and unaltered. Free.

Headers

NameDescription
Authorization
Required, secret
Bearer API key (cc_live_...), bought at https://counterpartycheck.com/#pricing

Details

Endpointhttps://counterpartycheck.com/mcp (Streamable HTTP)
First published15 Oct 2026
Last updated15 Oct 2026
Registry nameio.github.chtwebllc/counterparty-check

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