Adyen
Adyen joined the x402 Foundation to shape open, interoperable payment standards for agentic commerce, with a focus on the merchant outcomes that come from a shared protocol.
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The x402 ecosystem is already taking shape.
x402 is backed by payment networks, cloud platforms, developer infrastructure, and crypto-native teams building the next payment layer for the internet.
Foundation members
Big names, clear signal.
Premier and general members span payments, cloud, crypto infrastructure, and developer platforms.
Premier Members
13 members
Amazon
Amazon Web Services supports x402 for machine-to-machine payments in the cloud, enabling AI agents and services to transact seamlessly using the HTTP 402 payment protocol.
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American Express
American Express joined the x402 Foundation as a Premier member, bringing a global card brand to the standard.
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Circle
Circle issues USDC and built the Circle Agent Stack on x402 to power gas-free, sub-cent USDC payments for autonomous AI agents.
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Cloudflare
Cloudflare co-founded the x402 Foundation with Coinbase and provides native x402 support in Cloudflare Workers and AI Agents, enabling serverless HTTP payment flows at the edge.
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Coinbase
Best-in-class x402 facilitator. Fee-free USDC settlement on Base Mainnet. KYT/OFAC checks on every transaction.
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Fiserv
Fiserv joined the x402 Foundation as a Premier member to make agent-driven commerce adoptable by existing merchants without major re-engineering.
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Google joined the x402 Foundation as a Premier member, aligning cloud and internet infrastructure with the standard.
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MasterCard
Mastercard joined the x402 Foundation as a Premier member, adding card-network and payment infrastructure to the standard.
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Shopify
Shopify joined the x402 Foundation as a Premier member, connecting the standard to commerce and merchant infrastructure.
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Solana
Solana supports x402 with guides and infrastructure for fast, low-cost agent and API payments.
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General Members
10 members
Aleo
Aleo joined the x402 Foundation as a General member, aligning privacy-oriented blockchain infrastructure with the standard.
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Fireblocks
Fireblocks joined the x402 Foundation as a General member, bringing digital asset custody and stablecoin operations expertise to the standard.
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Kakaopay inc.
KakaoPay joined the x402 Foundation as a General member, bringing Korean fintech into the standard.
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Kite AI
Kite supports x402 with agent payment infrastructure built around budgets, permissions, and stablecoin-native settlement, with x402 protocol work backed by Coinbase Ventures.
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LayerZero Labs
LayerZero Labs joined the x402 Foundation as a General member, adding cross-chain infrastructure to the standard.
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Merit Systems
Merit Systems builds x402 tooling for the ecosystem, including x402scan and x402email — discovery and consumption tools that help agents find and use paid resources.
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Polygon Labs Services
Production-grade x402 facilitator for Polygon networks. Supports EIP-3009 USDC payments with verify and settle capabilities on Polygon Mainnet and Polygon Amoy testnet.
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Quant Network
Quant Network joined the x402 Foundation as a General member, bringing interoperability and programmable-money infrastructure to the standard.
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t54 labs
Real-time risk control for AI-driven x402 payments. x402-secure is specifically designed for transactions involving autonomous AI agents. It transparently integrates pre-payment AI agent risk checks and comprehensive signal collection into the standard x402 flow to prevent disputes and fraud.
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The fastest paths from interest to implementation.
Selected examples from teams making x402 easier to adopt across payments, AI, cloud, and developer infrastructure.
Stripe
Stripe has integrated x402 to enable stablecoin payments for internet commerce, allowing businesses to accept USDC payments natively via the HTTP 402 standard.
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Cloudflare
Cloudflare co-founded the x402 Foundation with Coinbase and provides native x402 support in Cloudflare Workers and AI Agents, enabling serverless HTTP payment flows at the edge.
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AWS
Amazon Web Services supports x402 for machine-to-machine payments in the cloud, enabling AI agents and services to transact seamlessly using the HTTP 402 payment protocol.
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Exa
Exa is an AI-native search engine that provides high-quality web data through its API, enabling AI agents and applications to search and retrieve content from the web.
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Vercel
Vercel supports x402 as an open protocol for payments in MCP tools, enabling developers to monetize AI-powered applications and serverless functions.
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Venice
Venice is a private and permissionless AI platform that provides access to open-source AI models, enabling uncensored inference, image generation, and code assistance without data retention.
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Alchemy
Alchemy integrates x402 to enable monetized access to their blockchain developer platform, allowing AI agents and applications to pay for RPC calls and web3 APIs using stablecoins.
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