x402 updates

Joaquim Verges

• 1 min read
x402 updates

We're continuously improving support for HTTP 402 payments in our SDK and facilitator API. Here's what shipped this week.

What’s new

  • Facilitator waitUntil option: Choose when a payment is considered fulfilled — simulated, submitted, or confirmed.
  • Signature auto-detection: SDK now detects the correct signature type and EIP-712 domain/version based on asset address. No need to configure manually.
  • Filters in /supported API: Filter supported tokens by chain or asset.
  • New /prepare API: sign and encode payment payloads directly with the authenticated wallet.
  • Revamped Playground: Select any token and try different config options in the UI. https://playground.thirdweb.com/payments/x402
  • Documentation refresh: Updated guides for client, server, and facilitator APIs. https://portal.thirdweb.com/payments/x402

In case you missed it, here's what we shipped last week:

Happy building! 🛠️