Security & Testing

counterpartycheck.com

Provides pre-payment risk and sanctions screening tools for payees, including OFAC checks, domain and email authentication, lookalike domain detection, and receipt verification.

x402 supported1 endpoint4 known toolsFirst detected October 16, 2026Last detected October 19, 2026

ENDPOINT 1

https://counterpartycheck.com/mcp

No auth detected

MCP server metadata

Name: counterparty-check
Version: 1.0.0

Capabilities

tools

Server instructions

Call check_counterparty before sending money to a payee you have not verified, and whenever payment details change. Pass everything you know in "context" (first payment, changed bank details, how the request arrived, urgency, the vendor domain on file). Treat a "block" verdict as do-not-pay and a "review" verdict as needing a human.

Known tools 4

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.

Potential side effects

screen_sanctions

Screen a payee name (and optional crypto wallet) against OFAC sanctions lists and embargoed jurisdictions.

Inferred read-only

check_balance

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

Inferred read-only

verify_receipt

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

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.counterparty-check]
url = "https://counterpartycheck.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "counterparty-check": {
      "type": "http",
      "url": "https://counterpartycheck.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: counterparty-check
Remote MCP URL: https://counterpartycheck.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "counterparty-check": {
      "url": "https://counterpartycheck.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "counterparty-check": {
      "type": "http",
      "url": "https://counterpartycheck.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "counterparty-check",
  "transport": "streamable-http",
  "url": "https://counterpartycheck.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Loading Trust v2 evidence…

Checking the associated registrable domain. The BuiltWith key remains server-side.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.