[Coinbase Developer Platform: x402 Now Supports Any ERC-20 Token and Adds Support for SIWX] March 17 – Coinbase Developer Platform announced that x402 now supports all ERC-20 tokens. Developers can use the following methods for payments: → EIP-3009 (Authorized Transfers) → Permit2. This means that USDC, EURC, or any ERC-20 token supported via Permit2 can be used for on-chain payments with x402. Additionally, x402 has added support for Sign-in-with-X (SIWX), addressing the issue of repeated access to purchased content. The x402 MCP package can monetize any MCP tool and integrate it directly into AI workflows.