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Add CardZero — AI agent payment wallet on Base#39

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mrocker wants to merge 1 commit intowbnns:mainfrom
mrocker:add-cardzero
Open

Add CardZero — AI agent payment wallet on Base#39
mrocker wants to merge 1 commit intowbnns:mainfrom
mrocker:add-cardzero

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@mrocker mrocker commented Mar 23, 2026

What is CardZero?

CardZero is the first payment wallet built for AI agents on Base. Each agent gets its own ERC-4337 smart contract wallet, funded with USDC, with spending rules set by a human owner via a web dashboard.

Features

  • ERC-4337 smart contract wallets on Base L2
  • Owner-controlled spending rules: per-tx limits, daily caps, address whitelists, emergency freeze
  • x402 payment protocol support for paying API paywalls
  • Agent-to-agent payments via USDC
  • Multi-platform plugins: OpenClaw, Claude Code, ChatGPT, Cursor

Links

CardZero gives each AI agent its own ERC-4337 smart contract wallet on
Base, funded with USDC. Human owners set spending rules via a web
dashboard; agents pay autonomously within those limits. Supports x402.

- Dashboard: https://cardzero.ai
- GitHub: https://github.com/mrocker/CardZero
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