MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.
To add HPP x402 MCP Bridge to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 5 environment variables, listed below.
Install
npx -y @hpp-io/x402-mcp-bridge@0.1.23Environment variables
DELEGATE_PRIVATE_KEYSet in your MCP configHPP_NETWORKSet in your MCP configRESOURCE_SERVER_URLSet in your MCP configSAFE_ADDRESSSet in your MCP configALLOWANCE_MODULE_ADDRESSSet in your MCP configInstall with your client
claude mcp add hpp-x402-mcp-bridge --env DELEGATE_PRIVATE_KEY=<YOUR_DELEGATE_PRIVATE_KEY> --env HPP_NETWORK=<YOUR_HPP_NETWORK> --env RESOURCE_SERVER_URL=<YOUR_RESOURCE_SERVER_URL> --env SAFE_ADDRESS=<YOUR_SAFE_ADDRESS> --env ALLOWANCE_MODULE_ADDRESS=<YOUR_ALLOWANCE_MODULE_ADDRESS> -- npx -y @hpp-io/x402-mcp-bridge@0.1.23
Run this in a terminal to add the server to Claude Code.
What this does
HPP x402 MCP Bridge exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
DELEGATE_PRIVATE_KEY HPP_NETWORK RESOURCE_SERVER_URL SAFE_ADDRESS ALLOWANCE_MODULE_ADDRESS
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install HPP x402 MCP Bridge?
Run the Claude Code command in the install section to add HPP x402 MCP Bridge to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with HPP x402 MCP Bridge?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to HPP x402 MCP Bridge as well.
Does HPP x402 MCP Bridge need an API key?
Yes. Before it can run, set these environment variables: DELEGATE_PRIVATE_KEY, HPP_NETWORK, RESOURCE_SERVER_URL, SAFE_ADDRESS, ALLOWANCE_MODULE_ADDRESS. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
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