What Base builds for agent payments
When docs say “deploy on Base Sepolia” they mean this chain. Production agent micropayments often start on Base mainnet for the same reason: cost and ecosystem density.
Base
Key playerCoinbase’s L2 — default settlement chain for x402 demos.
Settlement & Identity Rails x402USDC
Open-source projects that build on Base
15 repositories in this directory name Base in their title, description or topics — useful if you want working code rather than documentation. The most-starred are below.
- agent-wallet-sdk 6★ · TypeScript Non-custodial crypto wallets for AI agents with on-chain spending limits. ERC-6551, x402 compatible, Base Mainnet.
- x402-fl 5★ · TypeScript Local x402 payment facilitator for development and testing. Fork Base mainnet with Anvil, verify and settle x402 payments locally.
- AutonomiX 2★ · TypeScript AutonomiX is a Web3 platform combining x402 micropayments and ERC-8004 agent NFTs for decentralized AI agents, on-chain reputation, and secure paywalled APIs on Base Sepolia.
- erc8183-kya-hook 1★ · Solidity AsterPay KYA Hook for ERC-8183 Agentic Commerce — sanctions screening + trust score gate before job funding. Live on Base Sepolia.
- omnioracle 1★ · TypeScript Permissionless Prediction Market Factory with Composable Oracle Pipelines — "Zapier for prediction market oracles." 5 pipeline types (Price Feed, Data Stream, Functions, AI Grounded, Composite). 8 Chainlink services (CRE, x402, Data Feeds, Data Streams, Functions, CCIP, VRF, Automation) on Base Sepolia. Chainlink Convergence Hackathon 2026.
- x402-Base-starter 1★ · TypeScript AI Oracle Base Sepolia
- agentbridge 1★ · Python Global Agent Gateway for Chinese Web. Pay-per-fetch, 100% Autonomous on Base Mainnet.
- agoramesh 1★ · Vue Build a decentralized marketplace and trust layer for AI agents, enabling seamless transactions and interactions on the Base Sepolia network.
- url_x402 0★ · TypeScript A decentralized URL shortener powered by x402 micropayments and blockchain storage on Base Sepolia
- nexflow-smf-public 0★ · TypeScript Smart Meta‑Facilitator (SMF) for x402 on Base – Atomic USDC escrow + Merkle batch settlement contract, TypeScript SDK, and examples for routing/settling payments on Base mainnet.
- agent-procure 0★ · TypeScript Autonomous AI research agent with x402 micropayments — discovers, ranks, budgets, pays for, and synthesizes data from paywalled APIs on Base Sepolia
- truthmesh 0★ · JavaScript Decentralized BFT Fact Verification Oracle — Byzantine Fault Tolerant consensus for prediction market resolution. Verifiers stake, vote & earn rewards. 8 Chainlink services (CRE, x402, Data Feeds, Data Streams, Functions, CCIP, VRF, Automation) on Base Sepolia. Chainlink Convergence Hackathon 2026.
Base vs other settlement & identity rails
| Company | Protocols | HQ | Founded | OSS repos |
|---|---|---|---|---|
| Base | x402, USDC | USA | 2023 | 0 |
| Circle | x402, USDC | Boston, USA | 2013 | 0 |
| Skyfire | Agent identity | USA | 2024 | 0 |
| Alchemy | Base, EVM | San Francisco, USA | 2017 | 0 |
| Cloudflare | x402 | San Francisco, USA | 2009 | 0 |
| Tempo | Payments L1/L2 | Remote | — | 0 |
Also supporting x402/USDC: Coinbase, Circle, Crossmint, Payman, Cloudflare, Daydreams.