Q402 - gasless payments, yield, escrow, bridge & NAV triggers on 12 EVM chains. Sandbox-default.
To add q402-mcp 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 12 environment variables, listed below.
Install
npx -y @quackai/q402-mcp@0.11.33Environment variables
Q402_TRIAL_API_KEYSet in your MCP configQ402_MULTICHAIN_API_KEYSet in your MCP configQ402_PRIVATE_KEYSet in your MCP configQ402_AGENTIC_PRIVATE_KEYSet in your MCP configQ402_ENABLE_REAL_PAYMENTSSet in your MCP configQ402_MAX_AMOUNT_PER_CALLSet in your MCP configQ402_ALLOWED_RECIPIENTSSet in your MCP configQ402_RELAY_BASE_URLSet in your MCP configQ402_AGENT_WALLET_ADDRESSSet in your MCP configQ402_API_KEYSet in your MCP configQ402_WALLET_IDSet in your MCP configQ402_BUILDER_CODESet in your MCP configInstall with your client
claude mcp add q402 --env Q402_TRIAL_API_KEY=<YOUR_Q402_TRIAL_API_KEY> --env Q402_MULTICHAIN_API_KEY=<YOUR_Q402_MULTICHAIN_API_KEY> --env Q402_PRIVATE_KEY=<YOUR_Q402_PRIVATE_KEY> --env Q402_AGENTIC_PRIVATE_KEY=<YOUR_Q402_AGENTIC_PRIVATE_KEY> --env Q402_ENABLE_REAL_PAYMENTS=<YOUR_Q402_ENABLE_REAL_PAYMENTS> --env Q402_MAX_AMOUNT_PER_CALL=<YOUR_Q402_MAX_AMOUNT_PER_CALL> --env Q402_ALLOWED_RECIPIENTS=<YOUR_Q402_ALLOWED_RECIPIENTS> --env Q402_RELAY_BASE_URL=<YOUR_Q402_RELAY_BASE_URL> --env Q402_AGENT_WALLET_ADDRESS=<YOUR_Q402_AGENT_WALLET_ADDRESS> --env Q402_API_KEY=<YOUR_Q402_API_KEY> --env Q402_WALLET_ID=<YOUR_Q402_WALLET_ID> --env Q402_BUILDER_CODE=<YOUR_Q402_BUILDER_CODE> -- npx -y @quackai/q402-mcp@0.11.33
Run this in a terminal to add the server to Claude Code.
What this does
q402-mcp 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:
Q402_TRIAL_API_KEY Q402_MULTICHAIN_API_KEY Q402_PRIVATE_KEY Q402_AGENTIC_PRIVATE_KEY Q402_ENABLE_REAL_PAYMENTS Q402_MAX_AMOUNT_PER_CALL Q402_ALLOWED_RECIPIENTS Q402_RELAY_BASE_URL Q402_AGENT_WALLET_ADDRESS Q402_API_KEY Q402_WALLET_ID Q402_BUILDER_CODE
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install q402-mcp?
Run the Claude Code command in the install section to add q402-mcp 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 q402-mcp?
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 q402-mcp as well.
Does q402-mcp need an API key?
Yes. Before it can run, set these environment variables: Q402_TRIAL_API_KEY, Q402_MULTICHAIN_API_KEY, Q402_PRIVATE_KEY, Q402_AGENTIC_PRIVATE_KEY, Q402_ENABLE_REAL_PAYMENTS, Q402_MAX_AMOUNT_PER_CALL, Q402_ALLOWED_RECIPIENTS, Q402_RELAY_BASE_URL, Q402_AGENT_WALLET_ADDRESS, Q402_API_KEY, Q402_WALLET_ID, Q402_BUILDER_CODE. 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.
Is this your MCP server?
Claim this listing to see its traffic, fix details yourself, and skip the review queue on future updates.
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