PANews reported on March 17th that Coinbase's developer platform announced several key updates to the x402 protocol on the X platform: It now supports all ERC-20 tokens, allowing developers to accept on-chain payments for any ERC-20 token, including USDC, EURC, and even Memecoin, via EIP-3009 and Permit2; a new Sign-in-with-X feature allows buyers to access purchased content via wallet login, and sellers can provide payment-free access to returning customers, supporting EVM and Solana wallets; and the x402 MCP package has been released, enabling developers to monetize any MCP tool and directly integrate it into AI workflows. These updates aim to make x402 the most flexible and open internet-native standard.

