Base, Coinbase’s Ethereum L2, is where x402 originated and where most of the early tooling targets first. Low fees and EVM compatibility make it the default network for accepting USDC payments from AI agents, and Base Sepolia is the standard testnet for trying the flow for free.
These are the Base-focused x402 and agent-payment projects in the directory, ranked by popularity.
The Base category right now
The directory currently tracks 158 Base projects. pinion-os leads the group with 95 stars, and 0 of them have cleared 100 stars. Half the group sits at 1 stars or below, which is the honest shape of this space today: a short head of real adoption and a long tail of experiments.
TypeScript (51%) and Python (13%) dominate the implementation languages here, and azeth-protocol is the most prolific publisher with 7 Base repositories. The recurring GitHub topics are base, ai-agents, x402.
55 of the 158 projects were updated in the last 30 days and 81 in the last 90 (51%), so activity is uneven — check the last-commit date before adopting. 7 have had no commit for over a year. The newest entrant is Agent402, first published 2026-06.
Figures recomputed from the tracked repositories on every build.
