Block Brings Bitcoin Lightning Payments to the x402 AI-Agent Standard

By Isaac • September 25, 2026 11:19 am •

Bitcoin just picked up a new route into the emerging market for payments made by software instead of people.

Block has joined the x402 Foundation and contributed Lightning Network support to the open payment standard, putting instant Bitcoin settlement inside a system designed for AI agents, web services and applications.

That sounds technical. The practical idea is much simpler: software should be able to encounter a paid resource, settle the charge and continue its work without stopping to ask a human to enter a card number.

Crypto.news reports that Block’s contribution adds an “exact Lightning” path to x402. The protocol uses the web’s HTTP 402 “Payment Required” response so a service can quote a price and