# Counterparty Check Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Counterparty Check

Verify payees before payment to detect fraud, sanctions, and impersonation risks

- Record: https://musedirectory.ai/connector/counterparty-check
- Category: Finance & Bills
- Developer: chtwebllc (https://counterparty-check-production.up.railway.app)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 121ms, checked 2026-10-29T12:16:04Z
- Endpoint: https://counterparty-check-production.up.railway.app/mcp
- Auth: Needs an access key; Pricing: unknown
- Screening: Screened, no issues found (2026-10-29T08:36:38Z)
- Source: Found in the official MCP Registry (io.github.chtwebllc/counterparty-check) https://registry.modelcontextprotocol.io/v0/servers?search=io.github.chtwebllc%2Fcounterparty-check

Screens payees against OFAC sanctions lists, detects lookalike domains and vendor impersonation, validates payment routing details, and identifies business email compromise signals. Returns a risk verdict and signed receipt. Requires API key with prepaid balance.

Example request: "Before I pay this invoice from my vendor, check if the email domain is legitimate and if they're on any sanctions lists."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Counterparty Check to help me. It is a free service with an MCP server at https://counterparty-check-production.up.railway.app/mcp. It needs an API key from chtwebllc; ask me to enter it through your secure credential prompt. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- 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
- 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.

Screening checks:
- MCP handshake: pass (Answered in 84ms)
- Domain against threat feeds (Cloudflare security DNS): pass (counterparty-check-production.up.railway.app not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (4 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (Domain registered 2632 days ago)
- AI review of purpose and tool behavior: pass (No concerns)