Get Started

Start with sandbox mode. It uses an ephemeral local sandbox wallet and avoids real funds while you verify the payment loop.

Agent summary

• Use pay --sandbox curl ... for the smallest client proof.
• Use pay --sandbox claude or pay --sandbox codex when the agent should discover and call paid APIs.
• Use pay --sandbox server demo when testing the gateway side.
• Prefer linked docs pages over guessing flags from memory.

First commands

brew install pay
pay --version
pay --sandbox curl https://payment-debugger.vercel.app/mpp/quote/AAPL

Choose a path

• Client quickstart: call a paid API from a shell.
• Agent quickstart: run an agent with Pay MCP tools.
• Server quickstart: start a local payment gateway.