A-Pay Protocol MCP Server
API key requiredUniversal HTTP 402 Micropayment Protocol & Autonomous Economic Settlement Engine for AI Agents
To add A-Pay Protocol 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
uvx apay@0.1.8Environment variables
APAY_PRIVATE_KEYSet in your MCP configAPAY_NETWORKSet in your MCP configAPAY_CURRENCYSet in your MCP configAPAY_MAX_PER_CALLSet in your MCP configAPAY_DAILY_BUDGETSet in your MCP configInstall with your client
claude mcp add a-pay-protocol --env APAY_PRIVATE_KEY=<YOUR_APAY_PRIVATE_KEY> --env APAY_NETWORK=<YOUR_APAY_NETWORK> --env APAY_CURRENCY=<YOUR_APAY_CURRENCY> --env APAY_MAX_PER_CALL=<YOUR_APAY_MAX_PER_CALL> --env APAY_DAILY_BUDGET=<YOUR_APAY_DAILY_BUDGET> -- uvx apay@0.1.8
Run this in a terminal to add the server to Claude Code.
What this does
A-Pay Protocol 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:
APAY_PRIVATE_KEY APAY_NETWORK APAY_CURRENCY APAY_MAX_PER_CALL APAY_DAILY_BUDGET
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install A-Pay Protocol?
Run the Claude Code command in the install section to add A-Pay Protocol 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 A-Pay Protocol?
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 A-Pay Protocol as well.
Does A-Pay Protocol need an API key?
Yes. Before it can run, set these environment variables: APAY_PRIVATE_KEY, APAY_NETWORK, APAY_CURRENCY, APAY_MAX_PER_CALL, APAY_DAILY_BUDGET. 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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