402shield

io.github.MitchSinghv0.1.0Updated Oct 7, 2026

x402 payment security and pre-execution transaction risk screening for autonomous AI agents.

VerifiedStreamable HTTPWeb executableSecurity & MonitoringFinance

Overview

AI-generated overview

Screens x402 payment transactions for risk before an AI agent executes them.

What it does
402shield is a remote MCP endpoint that provides x402 payment security and pre-execution transaction risk screening for autonomous AI agents. Based on the available description, it is intended to evaluate a payment transaction before it is carried out and flag risk. No tool list, parameters, or response format are published in the supplied material.
When to use it
Consider it when an assistant or autonomous agent is expected to make or authorize x402 payments and you want a risk check performed before the transaction executes. It is not useful for agents that never handle payments.
Requirements
A remote streamable HTTP connection to the provider's endpoint. No authentication, environment variables, or headers are declared, and no package installation is needed.
Before you install
The server is described as handling payment security and transaction screening, so transaction details sent to it may be sensitive. No authentication is declared, so verify how the endpoint is protected and who operates it before routing real payment data through it. The published material does not describe what the screening returns or whether it can block a payment.

Installation

In SourceWeft

  1. Open 402shield in the dashboard and add it to a workspace.
  2. 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.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "402shield": {
      "type": "http",
      "url": "https://four02shield.onrender.com/mcp"
    }
  }
}

README

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Tools

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Version history

1
  1. v0.1.0LatestOct 7, 2026