Coinbase’s x402 pitch ties agent payments to machine autonomy

MurrLincoln · x · 2026-07-21

A Shoal Signal episode features Coinbase’s AI product manager on x402, machine payments, and the company’s stack for agents.
The discussion covers why 402 was framed as the web’s missing error code, the facilitator layer, discovery, and buyer/seller flows for agent commerce.
It also looks at where real use cases are emerging, including prediction markets, specialized agents, enterprise adoption, and agent-to-agent or machine-to-machine payments.
The broader thesis: as agents become the internet’s main users, value may accrue to the rails that let them pay autonomously.

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