# Block Joins the x402 Foundation and Adds Bitcoin Lightning to the AI Agent Payment Standard

The open standard built on HTTP's payment-required response had settled mainly in stablecoins, and Block's contribution puts a Bitcoin rail alongside them.

- Published: 2026-09-25T05:49:08.849Z
- Canonical: https://polylog.news/crypto/2026-09-25/block-joins-the-x402-foundation-and-adds-bitcoin-lightning-t
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [crypto.news](https://crypto.news/block-joins-x402-with-lightning-support/), [Polylog editors](https://polylog.news)

Block, the payments company led by Jack Dorsey, has joined the x402 Foundation and contributed Lightning Network support to the standard. x402 is an open protocol that lets software agents and web services pay automatically for interface ac…

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