alexander-balieu

Pay-per-call checks an AI agent runs before it moves money or trusts a counterparty. No API keys, no accounts, no signup. Each paid tool call settles in USDC on Base via the x402 protocol, straight from the agent's wallet ($0.001-$0.10 per call), through the Coinbase CDP facilitator, in about two seconds. **Start with the free `payment_info` tool.** It costs nothing, explains how payment works, and lists the price of every other tool. A client without wallet support can still call it. **20 too