Block402

xyz.block402v0.1.0Updated Oct 4, 2026

Bitcoin + Ethereum RPC for AI agents. 44 tools. x402 required; Base Sepolia test USDC.

VerifiedStreamable HTTPWeb executableDeveloper ToolsFinance

Overview

AI-generated overview

Gives an assistant Bitcoin and Ethereum RPC access through 44 tools, with x402 payment required using test USDC on Base Sepolia.

What it does
Block402 is a remote MCP endpoint that exposes Bitcoin and Ethereum RPC functionality to an AI assistant through 44 tools. It is reached over streamable HTTP at a hosted API rather than installed locally. Access is gated by the x402 payment protocol, using test USDC on Base Sepolia according to the registry description.
When to use it
Worth considering when an assistant needs to query Bitcoin or Ethereum chain data through RPC calls without running its own node. The test-network payment setup makes it more suitable for experimentation than for production use.
Requirements
A remote MCP client that supports streamable HTTP, pointed at the hosted endpoint. Network access to that endpoint. No packages, environment variables, or headers are declared. Payment via x402 with test USDC on Base Sepolia is stated as required.
Before you install
The server requires x402 payment, so requests may spend funds; the description specifies test USDC on Base Sepolia, but confirm which network and asset are actually charged before use. No authentication method is declared, and no tool list is published, so review the tools and payment flow before connecting.

Installation

In SourceWeft

  1. Open Block402 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": {
    "block402": {
      "type": "http",
      "url": "https://api.block402.xyz/mcp"
    }
  }
}

Tools

0
Tool metadata has not been indexed yet.

Version history

1
  1. v0.1.0LatestOct 4, 2026