1Pay.ing
1Pay.ing is the x402 payment wallet for instant micropayments, trusted checkout flows, and effortless integrations.
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Ecosystem
Discover innovative projects, tools, and applications built by our growing community of partners and developers leveraging x402 technology.
Client-Side Integrations
Axios & Fetch Clients
Reference TypeScript clients for x402 using both Axios and Fetch. Easily integrate x402 payments into your own applications.
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Bino
The autonomous AI agent framework. Consumes x402 paywalled services to collaborate with other agents, paying for specialized data and capabilities.
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Ekai Labs
Ekai is the universal context layer for your AI. Keep your context portable, persistent and yours, even when you switch between LLM models. Pay for inference using x402
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Mogami java client SDK
The Mogami Java Client SDK makes it easy to bring x402 payments into your Java application.
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Numbers Protocol
Numbers Protocol is a decentralized network that ensures the provenance and authenticity of digital media. Numbers uses x402 to enable seamless, instant payments for digital asset licensing, allowing users to acquire content licenses and Receipt NFTs directly via their crypto wallets.
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Nuwa AI
Nuwa AI introduces xNUWA, a user-friendly AI client that connects you to x402-compatible AI services.
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Oops!402
Bring x402 to ChatGPT and Claude via remote MCP, enabling AI agents to discover paid tools and agents, plan scoped execution, and pay with budget controls and receipts.
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Primer
A browser wallet (Primer Pay) for seamless interaction with x402 paywalls across the web, plus TypeScript & Python SDKs for payers and payees, with Full ERC-20 support.
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Subnano
Subnano is a micropayment content platform enabling creators to earn instantly — readers pay with fee-less Nano (XNO) for what they actually read.
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thirdweb
Client side TypeScript SDK and HTTP API to pay for any x402 compatible endpoint from your apps or agents.
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AI Frens by Treasure
AI Frens lets anyone launch an x402-compatible AI character token (“Fren”) and grow it with a community. With their x402-compatible Fren coin, fans can stake them for perks, send tips to their AI Fren, and pay for fun services x402 services provided by the AI character.
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Services/Endpoints
AdEx AURA API
AdEx AURA API with x402 micropayments. Access porfolio data, tokens and defi positions, yield strategies, transaction payloads
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AdPrompt x402 Marketing & Advertising APIs
x402-enabled endpoints from AdPrompt.Ai that let clients and agents pay-per-request for advertising and marketing outputs like brand analysis, marketing and advertising strategy, budget allocation, image and video ad creatives, A/B creatives, ad copy variants, and structured brand asset generation. Endpoints return 402 Payment Required with a machine-readable offer and accept automatic stablecoin settlement to unlock responses.
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AEON
The omnichain settlement layer that enables AI agents to seamlessly pay millions of real-world merchants across SEA, LATAM, and Africa — powered by x402 and USDC.
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Agnic.AI
Identity, x402 powered payments, and monetization for AI agents.
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AiMo Network
Through a permissionless API, pay-per-inference via x402, and agent-native interface, AiMo Network connects humans, AI agents, and service providers without censorship, borders, or gatekeepers.
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AIsa
A resource marketplace aggregating core assets such as LLMs, data APIs based on the HTTP 402 standard.
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AsterPay
x402-enabled Data API with 13 pay-per-call endpoints for market data, sentiment analysis, DeFi analytics, and AI services. Live on Base mainnet with CDP facilitator settlement. $0.001 USDC per call, no API keys needed. Also provides EUR settlement infrastructure for x402 payments via SEPA Instant with MiCA compliance.
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auor.io (Oreo)
x402 AI agent research toolkit. Access multiple APIs through the x402 payment protocol. No accounts, no subscription, just internet-native USDC.
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AurraCloud
AI agents hosting and Tooling Platform, with MCP, smartWallets, OpenAI API compatibility and X402 support.
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BlackSwan
Real-time risk intelligence infrastructure for autonomous AI agents.
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BlockRun.AI
Pay-as-you-go AI gateway providing ChatGPT and all major LLMs (Anthropic, Google, DeepSeek, xAI) via x402 on Base. Also features a catalog to discover all x402 services available on the market.
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Cybercentry
Cybercentry empowers individuals and organisations to anticipate, prevent, and respond to cyber threats with confidence. Our x402 services connect you to a curated suite of AI-powered security endpoints, structured around the core pillars of Compliance, Intelligence, and Protection.
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dTelecom STT
Production-grade real-time speech-to-text for AI agents. Full audio intelligence pipeline with VAD, noise reduction, speech validation, and hallucination filtering. Dual-engine architecture (Parakeet-TDT + Whisper) with smart routing, 99+ languages, usage-based billing. Built on dTelecom DePIN.
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Einstein AI
AI-powered blockchain intelligence API. Access whale tracking, smart money signals, DEX analytics, MEV detection, and investment reports via USDC micropayments on Base and Solana.
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Elsa x402
DeFi API endpoints with x402 micropayments. Access portfolio data, token prices, swap quotes, wallet analytics, yield suggestions, and more - pay per request with USDC on Base.
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Firecrawl
Firecrawl is a web scraping API that allows you to turn websites into LLM-ready data.
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Gloria AI
Gloria is an AI-powered provider of real-time, high-signal, customizable news data to AI agents and agent systems that need structured signals for any use case.
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Grove API
A unified API you can /fund using x402 to /tip anyone on the internet.
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invy
Returns any wallet's token holdings (including values, prices, and NFTs) across Ethereum and Solana.
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MerchantGuard
AI-powered compliance infrastructure for the agent economy. x402-gated APIs: GuardScore (merchant risk scoring), GuardScan (3-layer security scanner), and Mystery Shopper (10-probe agent certification). USDC on Base.
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Minifetch
Fetch rich, structured metadata and clean, token-efficient content summaries from web pages with pay-as-you-go micropayments
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Moltalyzer
Environmental awareness API for AI agents. Hourly digests of trending topics, sentiment, and emerging narratives on Moltbook — giving agents situational awareness and improving content performance.
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Neynar
Powering social data on Farcaster for agents and humans. Get cast info and more.
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Onchain
Onchain is x402's Intelligent Intermediary Layer for Aggregating Facilitators.
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Otto AI Agent Swarm
AI-powered crypto intelligence for Agents and Pros. Real-time crypto news, token analysis, market alpha signals, and AI tools via USDC on Base.
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ouchanip x402 APIs
10 pay-per-request utility APIs including QR code generation, email validation, PDF invoice, image resize, DNS lookup, and more. No accounts, no API keys — just USDC on Base L2.
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Pinata
Account-free IPFS uploads and retrievals using crypto payments, powered by x402. Pay for private or public IPFS storage and retrieval without an account or API key.
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Proofivy
Attestation and x402 paywalled publishing via a WordPress plugin or custom tools for publishers. iPhone app offering attestation and x402 publication for anyone.
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Questflow
The orchestration layer for the multi-agent economy. Orchestrate multiple AI agents to research, take action and earn rewards on-chain, autonomously.
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QuickSilver
Quicksilver serves as the bridge between physical systems and AI to foster real-world applications with perception, reasoning, and adaptability.
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RelAI
Monetize APIs with x402 micropayments across multiple networks. RelAI provides a marketplace and SDK to pay per request without API keys.
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Rencom
Search for x402 resources. Ranks candidate endpoints by historical agent outcomes to minimize execution failure and cost variance before selection. Sort by price, popularity or reliability to ensure you get the best resources.
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SerenAI x402 Gateway
Production payment gateway enabling AI agents to pay for database queries and API access using USDC on Base via the x402 protocol.
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SLAMai
Fast, accurate, agentic data. SLAMai is the definitive platform for smart money intelligence — live on Base and Ethereum. It delivers best-in-class data, open APIs for builders, and an MCP layer purpose-built for autonomous agents.
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Slinky Layer
SlinkyLayer is the open market for APIs - turning any API into an on-chain x402 pay-per-use resource with ERC-8004 portable reputation.
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Snack Money API
Micropayment platform for X, Farcaster, baseapp and verifiable identities.
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SocioLogic
x402-enabled RNG API providing cryptographically secure, verifiable randomness for AI agents, smart contracts, and applications requiring pay-per-use entropy.
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tip.md
A crypto tipping service that enables AI assistants to help users send cryptocurrency tips to content creators directly from their chat interface. USDC tips via MCP are powered by x402. The MCP service allows for checking wallet types and preparing cryptocurrency tips for users/agents to complete.
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Trusta.AI
The traditional way of Trusta Attestation involves users obtaining a signature on the website and then interacting with the contract to pay ETH for publishing an attestation. After the upgrade, Trusta Attestation integrates the x402 API to support users/agents publishing attestations by paying USDC on the Base chain via an API interface.
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Ubounty
AI agents and developers earn USDC by solving GitHub issues. Automated bounty creation, PR verification, and instant x402 settlement.
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Infrastructure & Tooling
0x402.ai
The Premier Cloud Infrastructure for x402. Empowering anyone to become an x402 Facilitator in seconds with dedicated domains and isolated environments, accelerating the growth and quality of the ecosystem.
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1Shot API
A general purpose fascilitator to monetize any n8n workflow with your favorite ERC-20 token.
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402104
Generate expirable, paywalled links to private ANS-104 DataItems on Arweave. Compatible with both S3 and ANS-104 data standards.
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Agently
Agently is the routing and settlement layer for agentic commerce. It enables AI agents to discover, orchestrate, and pay other AI agents, tools, and data providers on a per-call basis, at scale through agentic protocols.
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AltLayer
AltLayer provides an x402 suite including x402 gateway, facilitator, decentralized agent hosting autonome, etc.
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ampersend
A wallet for agents and a dashboard for humans. ampersend is a management platform for agent payments and operations, it abstracts crypto complexities while giving automation, control, and observability for agent-to-agent interactions.
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Atomic Rail
A Web3 toolkit for building paid APIs that you actually own. It uses the x402 protocol to send payments directly to your wallet—no middlemen or banks. You can change your prices or manage your endpoints from a dashboard and see the updates in production instantly, without ever redeploying your code.
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Cascade
Revenue distribution infrastructure for Solana and Base. Split payments between contributors, partners, and platforms.
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CodeNut
A Web3 vibe-coding platform for building and deploying x402-enabled applications and agents.
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DappLooker AI
DappLooker offers unified on-chain and market intelligence APIs with native x402 support, enabling seamless crypto-based pay-per-call access for agents, bots, and apps.
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Daydreams Router
Daydreams router provides x402 enabled LLM inference for agents and applications. All major providers are supported. Build the future of nanoservices.
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Faremeter
A lightweight OSS x402 framework powered by client-, middleware-, and server-side plugins ensuring maximum composability and extensibility.
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Fluora
Fluora is a MonetizedMCP marketplace, enabling AI agents to autonomously find and purchase services. Payments are powered by x402
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FluxA
FluxA provides permissionless deferred payment rails for x402. It enables fast, parallel stablecoin micropayments with on-chain batch settlement, bringing internet-native payments to scale.
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Foldset
Foldset lets anyone gate any API, MCP, URL, and more behind x402 micropayments. We provide the infrastructure layer for free: wallet provisioning, reverse proxy SDKs, AI-only blocking, analytics, and fiat off-ramps. Just add a middleware or reverse proxy and configure everything from our dashboard.
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Heurist Mesh
Heurist Mesh provides a library of composable crypto skills for any AI agent. Equip your AI with expert crypto analysis abilities, from tracking whale wallets to spotting trending new tokens to analyzing onchain markets with full support for MCP and the X402 payment standard.
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ICPAY
Crypto payments SDK and widgets for websites, apps, and AI agents.
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KAMIYO
AI agent orchestration platform with native x402 payment protocol support via ShadowWire, enabling autonomous agent-to-agent and agent-to-service micropayments on Solana.
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Kobaru
Kobaru provides a transparent proxy layer that allows vendors to add an x402 paywall to any existing API without changing a single line of code. It acts as a critical infrastructure bridge, offering high-throughput processing and a unique settlement layer that supports both crypto (Solana) and fiat currency.
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Latinum Agentic Commerce
An open-source MCP wallet and facilitator that agents can use to pay 402 payment requests.
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Locus
An MCP-enabled wallet that allows you to easily control your agents spending and auto generates tools for every x402 endpoint you use.
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MCP Server Example
A reference implementation MCP server and wallet to call x402 endpoints. Explore the code and run your own server.
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Meson x402
Chrome extension to connect EVM & Solana wallets, test x402 interfaces, perform payments, and generate X Payment Headers
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Mogami java server SDK (Spring boot)
The Mogami Java Server SDK lets you turn any endpoint of your spring application into a pay-per-call API using the x402 protocol.
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Nevermined
Infrastructure for AI agent payment processing and settlement. Handles payment validation, cost tracking, and multi-model support.
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Node Servers (Hono, Express, Advanced)
Reference x402 server implementations in Node.js using Hono and Express, plus an advanced example with dynamic pricing and complex logic.
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PEAC Protocol
Cryptographic receipt layer for x402 payments. On success, return a signed PEAC-Receipt header that binds payment proof to the delivered response and policy, verifiable offline.
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PredictOS
The leading open-source framework for deploying AI agents and trading bots for prediction markets. Features multi-agent Super Intelligence, wallet tracking, betting bots, and native x402/PayAI integration for paid AI services. Bring your own data, models, and strategies.
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Proxy402
Turn your URLs into paid content. Set a price, share your link, and collect payments instantly. By Fewsats.
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px402 by PRXVT
Privacy Preserving x402 Payments, using zero-knowledge proofs and shielded pools, hiding the sender's identity and transaction history.
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QuickNode
A Ruby gem that simplifies the process of adding paywalls to API routes in Ruby on Rails applications.
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x402-secure
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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thirdweb
Server side TypeScript SDK and facilitator HTTP API supporting 170+ chains and 4000+ tokens.
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TokenMesa
Tokenmesa helps businesses launch service backed token based on x402. Allowing users to pay through x402 with any token and auto convert to service token to reinforce token value.
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x402-go
Go implementation of the x402 protocol for building payment-gated APIs and services
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X402 Kit
A fully modular Rust SDK for building complex X402 payment integrations.
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x402 Market
A Permissionless Launchpad for x402-Enabled Services, Powered by the AWE Network
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x402 Playground
An interactive testing environment for the x402 payment protocol. Connect to any x402-enabled endpoint, test local paywalls, search the Bazaar discovery layer, and explore HTTP 402 payment flows. Built by Quicknode.
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x402-watch
A lightweight health monitoring tool for public x402-enabled APIs. It validates 402 responses, PAYMENT-REQUIRED headers, and optionally performs full payment lifecycle verification (402 → signing → 200 OK) using testnet USDC on Base Sepolia.
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x402jobs
Visual workflow builder for x402. Chain paid resources, set your markup, publish as an endpoint anyone can pay to run. Build once, earn on every call.
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x402lint
Validate x402 payment configurations. CLI, SDK, website, and Claude skill for checking configs, addresses, networks, and amounts.
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x402list.fun
Discover and analyze the x402 services ecosystem. Search paid API providers by category, compare pricing and transaction volume, view reliability metrics across blockchain networks. Your comprehensive directory for x402 integration.
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x402station
Leading x402 analytics platform with advanced UI for monitoring x402 services. Track real-time performance metrics, x402 API analytics, and service reliability with our comprehensive x402 UI dashboard.
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zauth
Trust infrastructure for autonomous commerce. Continuous endpoint verification, AI-powered code analysis (RepoScan), real-time monitoring dashboards, automatic refund execution, and a developer SDK. Ensures agents can safely discover and pay for x402 services.
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Learning & Community Resources
Facilitators
0xmeta AI
A fast and reliable x402 payment facilitator that simplifies blockchain payment verification and settlement. Built on top of x402 Protocol, 0xmeta.ai provides seamless multi-chain support with automatic settlement polling, webhook notifications, and enterprise-grade reliability.
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AutoIncentive Facilitator
Free, public x402 facilitator for Base and Solana. Full verify + settle flow with on-chain USDC transfers. No API keys required.
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CDP Facilitator
Best-in-class x402 facilitator. Fee-free USDC settlement on Base Mainnet. KYT/OFAC checks on every transaction.
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Corbits
A production grade facilitator which supports multi-network, multi-token, multi-payment schemes.
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Dexter
Solana and Base x402 facilitator with an integrated marketplace and cross-chain bridge. Agents discover tools via MCP, pay via x402, and get results in one flow. Access from ChatGPT, Claude, Telegram, or any MCP client - same agent, same wallet, infinite interfaces.
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fretchen.eu Facilitator
Production x402 v2 Facilitator on Optimism and Base with EIP-3009 USDC payment verification and settlement.
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Heurist Facilitator
Enterprise-grade x402 facilitator on EVM chains. Supporting both V1 and V2. OFAC-Compliant.
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Hydra Protocol Facilitator
A permissionless network of independent nodes that collectively perform the facilitator's role. Nodes collaborate to fulfill requests in exchange for fees.
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KAMIYO Facilitator
x402 payment facilitator powering autonomous agent transactions on Base and Solana.
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Kobaru
x402 Facilitator built from scratch by payment veterans who understand what payment systems demand. Kobaru is a purpose-built payment engine designed for developers who need institutional-grade reliability, complete visibility into their revenue operations, and the freedom to focus on building their business instead of managing payment complexity. Whether you are an Enterprise or Independent Developer, Kobaru has the right features for you.
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Mogami facilitator
A free, developer-focused, production-ready facilitator for x402 payments. Use it instantly online, or launch your own Docker image in seconds.
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Nevermined Facilitator
Nevermined x402 Facilitator for AI agent payment verification and settlement on Base networks.
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OpenFacilitator
Free, open-source x402 facilitator. Or become your own facilitator for $5/month.
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OpenX402.ai Facilitator
The first permissionless, gasless and omnichain x402 facilitator that any x402 server can use without login
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PayAI Facilitator
Accept x402 payments on all networks including Avalanche, Base, Polygon, Sei, Solana, and more! Get started in less than 1 minute. Supports all tokens. No API Keys required.
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Primer Facilitator
x402 v1 & v2 facilitator on Base, with full ERC-20 support - not just EIP-3009.
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RelAI Facilitator
Multi-chain x402 facilitator with gas-sponsored USDC payments on Ethereum, Polygon, Base, Avalanche, SKALE, and Solana. Zero gas fees for users.
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SolPay
Solana x402 facilitator powering crypto payments for storefronts and APIs. USDC settlements with sub-second finality, trustless escrow, and WooCommerce integration.
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Treasure Facilitator
Treasure x402 Facilitator available on Base and Base Sepolia. Supports EIP-3009 compliant tokens including USDC, MAGIC, SMOL, MIO, AI Frens tokens, and more.
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WorldFun Facilitator
AWE World.fun’s x402 Facilitator enables fee-free EIP-3009 payments in USDC and other ERC-20 tokens, handling verification and settlement on Base so developers don’t need blockchain infrastructure.
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x402.org Facilitator
Default testnet facilitator for x402
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x402.rs Facilitator
Independent, open-source facilitator in Rust. Easy to self-host, extend to new networks, or use via our hosted instance.
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xEcho Facilitator
xEcho Facilitator implements on-chain settlement callbacks, enabling on-chain post-payment programmability to support pay-to-earn and outcome-based payment scenarios.
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