x402
Internet-native payment standard
A standard for requesting payment and supplying payment proof when accessing a digital resource.
PROJECT DIRECTORY
Explore the stack: wallets, permissions, payment protocols, merchant tools and settlement networks.
40 products & infrastructure · 15 protocols & standards · 25 company profiles
80 projects
Internet-native payment standard
A standard for requesting payment and supplying payment proof when accessing a digital resource.
Agent Payments Protocol
Verifiable credentials and mandates record what a user authorized an agent to purchase or pay for.
Agentic Mobile Protocol
A framework connecting agent-led commerce with mobile wallets, super apps, and payment participants.
Machine Payments Protocol
A specification for agents and services to coordinate programmatic payments, including microtransactions and sessions.
Agentic Commerce Protocol
An open commerce standard connecting merchants with AI shopping surfaces through structured product information.
Universal Commerce Protocol
A common language for commerce interactions across platforms, agents, businesses, and payment providers.
Trusted Agent Protocol
Signed request information helps merchants recognize approved agents and verify their stated commerce intent.
Account abstraction with UserOperations
Defines account operations submitted through bundlers and an EntryPoint, enabling programmable account validation and fee handling.
Code delegation for externally owned accounts
Allows an externally owned account to delegate execution to contract code, enabling smart-account behaviors.
Request execution permissions from wallets
A proposed wallet interface for applications to request scoped authority to execute on a user’s behalf.
Agent identity, reputation and validation registries
Proposes registries for discovering agents and recording identity, feedback and independent validation signals.
Model Context Protocol
A standard interface connecting AI applications to tools, resources and external workflows.
Agent2Agent Protocol
A protocol for communication and task interoperability between independently implemented agents.
Agentic Commerce Trust Protocol
A commerce framework covering delegation, commercial interactions, payment services and trust services.
Cross-Chain Transfer Protocol
Moves supported assets between blockchains using burn-and-mint rather than traditional bridge liquidity pools.
Agentic Wallets
Give an agent a wallet to hold, spend, trade, and earn stablecoins.
Agent Stack
Programmable USDC wallets with spending policies and service discovery.
Wallets for agents
Programmable smart wallets with scoped agent access through a unified API.
Agent wallets
Wallet infrastructure for agents to hold funds and transact within guardrails.
Wallet infrastructure
Private key management and wallet APIs for agent and stablecoin applications.
Agent wallets
Agent wallets with spending policies, subscriptions, and batch operations.
Agent Wallet
Command-line agent transactions and supported on-chain actions.
Agentic Wallet
MPC-based agent wallet with scoped Pact permissions.
MoonAgents
Non-custodial software for agent-managed wallets and on-chain actions.
Wallets
Planned account and virtual wallets for agent spending; availability is limited.
Hosted x402 verification and settlement
A hosted service that verifies and settles x402 payments for resource providers.
Agent payment and merchant tools
Payment tools combining scoped spending, a paid-services catalog, and purchase records.
Agent service discovery
A marketplace where agents discover services and pay for them in USDC.
Blockchain infrastructure for payments
A blockchain built by Coinbase with infrastructure for stablecoin and agent-driven payments.
Toolkit for wallet-enabled agents
Connects agent frameworks to wallet providers and onchain actions through an extensible developer toolkit.
Embedded wallets and onboarding
Embed wallets in an application and connect them to digital-asset payment flows. Dynamic is now part of Fireblocks.
Transaction infrastructure for embedded wallets
Send transactions with gas sponsorship, batching, retries and smart-wallet capabilities using an external signer.
Programmable accounts and approval controls
Smart accounts with developer tooling for agent actions, human approvals and spending-limit configurations.
Smart accounts with scoped permissions
Build smart accounts with modular permissions that define who can act, under which conditions, and through which execution path.
Smart accounts and transaction orchestration
Nexus accounts, execution orchestration and Smart Sessions support automated transactions under delegated permissions.
Wallet operations and policy infrastructure
Wallet lifecycle, signing, transaction orchestration and access policies for applications and institutions.
Institutional wallet infrastructure
Wallet infrastructure for managing client funds with MPC signing, segregated structures and policy-based controls.
Bundlers, paymasters and gas sponsorship
Transaction infrastructure that submits account operations and helps applications sponsor fees or pay gas in tokens.
Payment-gated APIs and agent payment tools
Client and server tools for charging per request and giving agents access to paid APIs through wallets and MCP tools.
Pay for blockchain APIs with a wallet
Wallet-based access to Quicknode services through x402 and MPP, including individual calls and agent subscriptions.
Customer-approved online spending
An agent requests a purchase, the customer approves it, and Link supplies a one-time payment credential.
Commerce integrations for agents and sellers
Tools for selling products, bookings and paid API access to agents, and embedding commerce in AI interfaces.
Scoped payment credentials
Share scoped payment credentials for purchases initiated by agents.
Agent-enabled card payment infrastructure
Visa’s integration framework for agent providers, token provisioning and authorized card-payment flows.
Tokenized payments for agent-led shopping
Agentic tokens, captured consent and payment authentication support agent-initiated card purchases.
Machine-payment APIs and trust layer
A machine-commerce offering using signed payment vouchers and wallet/payment partners to connect buyers and sellers.
Agent Ready payments and Store Sync
Connect merchant catalogs, carts and orders to AI shopping channels, with PayPal payment acceptance.
Catalog, cart, checkout and order tools
UCP-compatible tools and MCP servers let commerce agents discover products, build carts and follow orders.
Authorized purchases through Alipay
Connect agents, users and merchants through purchase intent, user authorization, payment and result delivery.
Usage-based payments for APIs and skills
Charge for API, MCP and skill usage with an HTTP 402 payment flow connected to Alipay.
Agent identity and trust infrastructure
An identity framework linking agent identity, runtime state, accountable parties and transaction evidence.
Unified crosschain balances
Access deposits across supported chains as a unified balance per asset, with signed transfer authorization.
Stablecoin and fiat payment infrastructure
APIs for moving funds between fiat rails and stablecoins, alongside wallets, virtual accounts and card infrastructure.
Settlement network and payment integrations
Solana payment documentation covers stablecoin settlement for x402 and MPP request-based payments.
Blockchain for stablecoin payments
A payment-focused blockchain for stablecoin financial applications, with machine-payment and service-discovery tooling.
Company profile
Explore agent-payment products, protocols, and articles associated with Coinbase.
Company profile
Explore agent-payment products, protocols, and articles associated with Circle.
Company profile
Explore agent-payment products, protocols, and articles associated with Crossmint.
Company profile
Explore agent-payment products, protocols, and articles associated with Privy.
Company profile
Explore agent-payment products, protocols, and articles associated with Turnkey.
Company profile
Explore agent-payment products, protocols, and articles associated with Openfort.
Company profile
Explore agent-payment products, protocols, and articles associated with Nevermined.
Company profile
Explore agent-payment products, protocols, and articles associated with Visa.
Company profile
Explore agent-payment products, protocols, and articles associated with Ant International.
Company profile
Explore agent-payment products, protocols, and articles associated with Google.
Company profile
Explore agent-payment products, protocols, and articles associated with Stripe.
Company profile
Explore agent-payment products, protocols, and articles associated with Fireblocks.
Company profile
Explore agent-payment products, protocols, and articles associated with Alchemy.
Company profile
Explore agent-payment products, protocols, and articles associated with ZeroDev.
Company profile
Explore agent-payment products, protocols, and articles associated with Biconomy.
Company profile
Explore agent-payment products, protocols, and articles associated with Dfns.
Company profile
Explore agent-payment products, protocols, and articles associated with Pimlico.
Company profile
Explore agent-payment products, protocols, and articles associated with thirdweb.
Company profile
Explore agent-payment products, protocols, and articles associated with Quicknode.
Company profile
Explore agent-payment products, protocols, and articles associated with Mastercard.
Company profile
Explore agent-payment products, protocols, and articles associated with PayPal.
Company profile
Explore agent-payment products, protocols, and articles associated with Shopify.
Company profile
Explore agent-payment products, protocols, and articles associated with Alipay.
Company profile
Explore agent-payment products, protocols, and articles associated with Bridge.
Company profile
Explore agent-payment products, protocols, and articles associated with OpenAI.
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Curated coverage of agent payment and commerce. Projects may span categories; company profiles are counted separately from products. Each profile links to official sources and states its limits.