The top x402 projects, ranked by prominence — TVL, market cap, funding, and on-chain activity.
pieverse
From AI that answers to AI that acts
bnb-chainethereum
Meridian
Universal payment rails for AI agents
arbitrumavalanchebase+7
Thirdfy
Autonomous DeFi infrastructure for AI agents
base
Quack AI
Governance layer for the Agent Economy
arbitrumavalanchebase+4
PayAI Network
Decentralized AI agent marketplace on Solana
arbitrumbaseethereum+3
Anyspend
Crypto pay solution
base
Onchain
Intelligent intermediary layer for x402 payments
base
Hetu Protocol
AI-Native Monetary Stack
b402
Payment infrastructure built on the BNB Chain
Keyless
Biometric authentication and personal identity management platform
rpc x402
Pay-per-call RPC based on the x402 protocol
x402scan
x402 ecosystem browser
Aven
x402 agent
FluxA
AI agent payment protocols
402rush.fun
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AurraCloud
AI Agent Platform
Harmonic Protocol
x402 transaction protocol
SniperX
x402 super AI agent
Vend.Money
Stablecoin yield protocol based on x402
AgentPay
Stablecoin payment system