Coinbase Developer Platform: x402 now supports any ERC-20 token and has added support for SIWX

The Coinbase developer platform states that x402 now supports all ERC-20 tokens. Developers can receive payments using the following methods: → EIP-3009 (authorized transfer) → Permit2. This means that USDC, EURC, or any ERC-20 token supported by Permit2 can be used for on-chain payments with x402.

In addition, x402 has added support for Sign-in-with-X (SIWX), addressing the issue of repeated access to purchased content; the x402 MCP software package can monetize any MCP tool and integrate it directly into AI workflows.