CounterpartyCheck

co.youraitoolsPublished by youraitools.coOfficial publisherv0.1.1Updated Oct 26, 2026

Pre-payment check for EVM/Solana addresses: ok/caution/block with reasons. By Crypto Money Maker

The publisher's own server: DomainCheck

VerifiedStreamable HTTPWeb executableFinance Security & Monitoring

Server details

Identifier: co.youraitools/counterpartycheck
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Oct 22, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to youraitools.co, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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[![Listed on SourceWeft](https://sourceweft.com/badge/mcp/co.youraitools%2Fcounterpartycheck.svg)](https://sourceweft.com/mcp/co.youraitools%2Fcounterpartycheck?utm_source=readme&utm_medium=badge)

Overview

AI-generated overview

Checks an EVM or Solana address before you pay or interact with it, returning an ok, caution or block verdict with reasons.

What you can do: Check a counterparty address on Base, Ethereum, Polygon, Arbitrum One or Solana and get an ok, caution or block verdict with confidence, address kind and flag counts
Use the free preview tier for a basic verdict before committing to a paid check
Access paid x402 endpoints for deeper lite and quick reports
When to use it: Useful when an assistant is about to approve a payment, transfer or interaction with an unfamiliar crypto address and you want a quick risk signal first.
Requirements: Works as a remote endpoint or as a local npm package over stdio. No accounts, API keys or environment variables are declared. Paid checks use x402 endpoints, which require a payment-capable wallet or client.

Before you install

Paid tiers cost money per call (for example $0.005 for lite and $0.015 for quick), so spending can occur without a separate sign-up. The verdict is a risk signal, not a guarantee; treat ok as advisory. The address you check is sent to a third-party service.

Installation

In SourceWeft

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

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/co.youraitools%2Fcounterpartycheck/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "counterpartycheck": {
      "type": "http",
      "url": "https://api.youraitools.co/counterpartycheck/mcp"
    }
  }
}

Tools

check_counterparty

Is it safe to pay this address?

Pre-payment counterparty check for an EVM (Base, Ethereum, Polygon, Arbitrum One) or Solana address: ok / caution / block with a confidence, from OFAC SDN and ScamSniffer screening, the x402 Bazaar payee directory, wallet vs contract vs token vs Safe, verification, names and cross-chain presence. Free preview by default (verdict, confidence, address kind, flag counts). With COUNTERPARTYCHECK_X402_PRIVATE_KEY set, returns the paid quick report (reasons, OFAC SDN and scam-list matches, x402 directory, verification, deployer, ENS / Basename, cross-chain presence) from https://api.youraitools.co/counterpartycheck/v1/quick, paying $0.015 USDC on Base per check over x402. Automated pre-payment due-diligence signals from public lists and on-chain data. Not legal, compliance or financial advice; "ok" means no known risk signal was found, not a guarantee.

Parameterschainintentaddressrequired

Version history

v0.1.1LatestOct 22, 2026

Score

75% 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 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
License10 pts
Declare a license in the repository or the registry entry.