Coinbase will implement a $0.001 fee per transaction for its x402 Facilitator service starting January 1, 2026. The first 1,000 transactions each month will remain free, with charges applying to any additional transactions. Developers will receive their initial billing on February 1, 2026. This move comes as the x402 service has seen rapid growth, with Coinbase currently covering all transaction Gas fees. The new fee structure aims to support the service's sustainability and ongoing optimization.