Counterparty Check

io.github.chtwebllc/counterparty-checkVersion 1.0.1

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

Status

Responds200 msNov 14, 2026, 14:47 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:47 UTC
Latency: 200 ms
Remotes responding: 1 of 1
Sign-in: API key
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://counterpartycheck.com/mcpResponds200 msNov 14, 2026, 14:47 UTC

No sign-in

Claude Code

claude mcp add --transport http counterparty-check https://counterpartycheck.com/mcp --header 'Authorization: Bearer <YOUR_TOKEN>'

Replace <YOUR_TOKEN> before running.

Claude Desktop and claude.ai

Settings > Connectors > Add custom connector
Name: counterparty-check
Remote MCP server URL: https://counterpartycheck.com/mcp
This server expects the header Authorization.

Cursor

{
  "mcpServers": {
    "counterparty-check": {
      "url": "https://counterpartycheck.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_TOKEN>"
      }
    }
  }
}

Replace <YOUR_TOKEN> before running.

VS Code

code --add-mcp '{"name":"counterparty-check","type":"http","url":"https://counterpartycheck.com/mcp","headers":{"Authorization":"Bearer <YOUR_TOKEN>"}}'

Replace <YOUR_TOKEN> before running.

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Tools

4 tools

Tools of Counterparty Check
	Description		Read-only	Idempotent	Open world
`check_balance`Show the remaining prepaid balance on the API key used for this connection. Free.	Show the remaining prepaid balance on the API key used for this connection. Free.	Not declared	Yes	Not declared	Not declared
`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 signals. Returns verdict proceed/review/block, a 0-100 risk score, explained findings, and a signed receipt. Costs $0.25 from the API key balance. Fill in "context" with everything you know about how the payment request arrived; it materially improves fraud detection.	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 signals. Returns verdict proceed/review/block, a 0-100 risk score, explained findings, and a signed receipt. Costs $0.25 from the API key balance. Fill in "context" with everything you know about how the payment request arrived; it materially improves fraud detection.	Not declared	Yes	Not declared	Yes
`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.	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.	Not declared	Yes	Not declared	Yes
`verify_receipt`Confirm that a receipt returned by a previous check is authentic and unaltered. Free.	Confirm that a receipt returned by a previous check is authentic and unaltered. Free.	Not declared	Yes	Not declared	Not declared

Details

Registry status: Active
Published: Oct 15, 2026
Updated: Oct 15, 2026
Website: https://counterpartycheck.com/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Invoicing and accounting Security Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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