AI agents are paying each other now…

Fireship explains Coinbase’s x402 protocol, which turns HTTP 402 into a live machine-to-machine micropayment standard with zero fees.

• Coinbase launched x402 in 2025, reviving the dormant HTTP 402 ‘payment required’ status code for real micropayments.
• x402 eliminates Stripe’s 30-cent-per-transaction floor, making sub-cent API pricing viable for the first time.
• One line of Node.js middleware is enough to put a paywall in front of any API endpoint.
• Payments settle instantly on a decentralized network (e.g. Base) using stablecoins like USDC — no subscriptions or OAuth required.
• AI agents can autonomously make x402 payments on behalf of users via the x402 fetch library, enabling agent-to-agent commerce.
• The seller only needs to supply a wallet address, protected route, price, and network config — no platform account required.
• Stripe’s model forces subscriptions or credit top-ups to amortize per-transaction fees; x402 removes that complexity entirely.

2025-11-26 · Watch on YouTube