Coinbase introduces x402: stablecoin payments over HTTP 402
An open protocol that turns Payment Required into a machine-payable API primitive.
product
Base
Coinbase L2 and the first Foundry production settlement network for USDC x402.
Machine: /v1/intelligence/entity/base · Graph: /v1/graph/entities/base
Graph relationships
- x402
- evt-base-l2-fees-enable-micropayments
- evt-coinbase-x402-2025-05-06
- evt-ethereum-pectra-2025-05-07
- evt-solana-x402-support
- svc-accessibility_contrast_calculator
- svc-data_compatibility_checker
- svc-machine_economy_changes_since
- zfinia
Timeline
Cheap L2 fees are the economic precondition x402 keeps citing
Coinbase’s x402 launch note argued that cent-level L2 fees revive HTTP micropayments.
Ethereum’s Pectra upgrade lands on mainnet
L1/L2 fee and account features are plumbing for micropayments.
x402 seller docs list Solana alongside Base
The protocol is not Base-only even if Foundry’s first rail is.
Circle opens a keyless x402 Discovery API for the Agent Marketplace
One unauthenticated GET now returns live USDC-payable services with payment terms and call schemas.