X402 Checks

io.github.89ratv1.3.0Updated Oct 6, 2026

Machine-payable deterministic identifier checks + signed XDR-1 receipts for agents.

VerifiedStreamable HTTPWeb executableSecurity & Monitoring

Overview

AI-generated overview

A remote MCP endpoint that lets an assistant run deterministic identifier checks and obtain signed receipts for them.

What it does
X402 Checks is a hosted MCP server reachable over streamable HTTP at a fixed remote endpoint. According to its registry description, it performs deterministic identifier checks and issues signed XDR-1 receipts for agents. No tool list, parameters, or output formats are published in the available material, so the exact operations an assistant can call are not documented here.
When to use it
Consider it when an assistant needs a repeatable, verifiable check of an identifier and a signed receipt that the check was performed. Because the tool surface is undocumented, evaluate it only if you can inspect the endpoint's actual capabilities first.
Requirements
A remote MCP client that supports streamable HTTP, plus network access to the provider's endpoint. The manifest declares no authentication, no environment variables, and no headers, and no package or local runtime is needed.
Before you install
The manifest declares no authentication, so anything sent to the endpoint may be unauthenticated and visible to the operator; do not submit secrets or personal data. The description mentions machine-payable checks, which may imply payment or spending, but no pricing, payment mechanism, or credential is documented. The tool list is unpublished, so verify what the server actually does before relying on it.

Installation

In SourceWeft

  1. Open X402 Checks 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": {
    "x402-checks": {
      "type": "http",
      "url": "https://api.code402.dev/mcp"
    }
  }
}

README

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Tools

0
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Version history

1
  1. v1.3.0LatestOct 6, 2026