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awesome-x402

🚀 Curated list of x402 resources: HTTP 402 Payment Required protocol for blockchain payments, crypto micropayments, AI agents, API monetization. Includes SDKs (TypeScript, Python, Rust), examples, facilitators (Coinbase, Cloudflare), MCP integration, tutorials. Accept USDC payments with one line of code. Perfect for AI agent economy.
https://github.com/xpaysh/awesome-x402

Last synced: 4 days ago
JSON representation

  • Awesome Lists

  • 🔒 Security & Audits

    • Bug Bounty Programs

    • Security Best Practices

    • Known Vulnerabilities & Mitigations

    • Security Monitoring

      • Rate Limiting Tools - Prevent abuse and ensure service availability.
      • PaySentry - Control plane for AI agent payments. Spending limits, circuit breakers, anomaly detection, and audit trails for x402 integrations. npm: `@paysentry/x402`.

    • Spending Controls & Policy Enforcement

      • PolicyLayer - Non-custodial spending controls for AI agents with crypto wallets. Enforces daily spending limits, per-transaction caps, recipient whitelists, and rate limiting without holding private keys.

  • 🔨 Tools & Utilities

    • CLI Tools

      • Foundry - Smart contract development toolkit.

    • Monitoring & Analytics

      • Sentinel - Enterprise audit & compliance layer for x402 payments. Budget enforcement (per-call, hourly, daily), structured audit trails, real-time dashboard, and public payment explorer. SDK: [`@x402sentinel/x402`](https://npmjs.com/package/@x402sentinel/x402). Built by [Valeo](https://valeocash.com)
      • ScoutScore - Trust scoring infrastructure for x402 services. Monitors 1,700+ services with continuous health checks and fidelity probes using a 4-pillar model (Contract Clarity, Availability, Response Fidelity, Identity & Safety). [API Docs](https://scoutscore.ai/docs) · [npm SDK](https://www.npmjs.com/package/@scoutscore/sdk) · [MCP Server](https://www.npmjs.com/package/@scoutscore/mcp-server)
      • Paybound - Open-source governance proxy for x402 agent payments. Per-agent budgets, circuit breakers, and SQLite audit trail.

  • 🛠️ SDKs & Client Libraries

    • JavaScript/TypeScript

      • viem - TypeScript library used for signing payments.
      • x402-got - Got HTTP client integration.
      • PayBot SDK - TypeScript SDK for integrating x402 payments into AI agents and bots. Supports automatic 402 detection, wallet management, and USDC payments on Base. ([npm](https://www.npmjs.com/package/paybot-sdk))
      • ClawPay MCP - Non-custodial x402 payment layer for AI agents. Agents sign locally with their own keys — no custodial infrastructure needed. Supports automatic 402 detection and USDC payments on Base. ([npm](https://www.npmjs.com/package/clawpay-mcp))
      • Azeth SDK - TypeScript SDK with x402 client (`fetch402`), ERC-4337 smart accounts, on-chain reputation feedback after every x402 call, and ERC-8004 service discovery. USDC on Base. ([npm](https://www.npmjs.com/package/@azeth/sdk))
      • Agent Wallet SDK - Non-custodial smart contract wallets for AI agents with on-chain spend limits and operator model. Base L2. ([npm](https://www.npmjs.com/package/agentwallet-sdk))

    • Rust

      • alloy - High-performance Ethereum library.

  • 📖 Protocol Documentation

  • 🏭 Production Implementations

    • High-Volume Production Deployments

      • Cloudflare Workers - Edge computing platform with x402 integration serving global distributed payment verification at scale across 300+ data centers.
      • AIsa - Leading x402 payment processor with **10.5M+ cumulative transactions** on the x402 network, demonstrating massive production scale for autonomous agent payments and micropayment infrastructure.
      • Bitget - Major cryptocurrency exchange integrating x402 for seamless payment flows, enabling instant settlements and gasless transfers for trading operations.

  • 🌟 Ecosystem Projects

    • DeFi & Finance

      • Chainlink VRF - Random NFT minting with payment demo.
      • Cred Protocol - Decentralized credit scoring.
      • Signet - Onchain spotlight ads on Base — AI agents pay USDC via x402 to post ads. First mainnet x402 transaction on Base. [CLI](https://github.com/h1-hunt/signet-client)
      • x402-api - per-call DeFi & crypto data API. 8 endpoints: price feeds, whale tracking, gas tracker, DEX quotes, token scanner, yield scanner, funding rates, wallet profiler. USDC micropayments on Base. ERC-8004 Agent #18763.

    • Infrastructure

      • thirdweb Nebula - AI agent transaction framework.
      • Coinbase Developer Platform - Hosted facilitator service with enterprise-grade reliability and instant settlement.
      • Finance District Prism - Payment gateway for agentic commerce with x402 support. SDKs for TypeScript, Python, and Java. Two-layer architecture: Prism (orchestration — API, SDKs, middleware) and Spectrum (on-chain stablecoin settlement across Base, Ethereum, Arbitrum, and BSC). ([Docs](https://developers.fd.xyz))

    • Tools & Services

      • Apexti Toolbelt - 1,500+ Web3 APIs via x402 MCP servers.
      • BuffetPay - Smart x402 payments with guardrails.
      • AIAgentStore.ai - Insights for founders with x402 payments.
      • AgentStore - Open-source marketplace for Claude Code plugins with x402 USDC payments, 80/20 publisher revenue split, and permissionless publishing via CLI.
      • Moltalyzer - Three AI intelligence feeds for agents: hourly Moltbook community digests, daily GitHub trending repos, and daily Polymarket insider detection via x402 micropayments on Base.
      • Pylon - payable utility API gateway for AI agents. 20 capabilities (web extraction, search, translation, code execution, image generation, and more) on Base mainnet. MCP server (`npx @pylonapi/mcp`), agent reputation network, and gateway orchestration. USDC on Base. ([GitHub](https://github.com/pylon-apis/pylon-mcp))
      • CrossFin
      • x402 API Network - 16 micropayment-powered APIs for AI agents: email verification, domain health, web scraping, AI content generation (Llama 3.3 70B), DNS, WHOIS, SSL check, and more. Includes MCP server, Bazaar discovery, and .well-known/x402 manifest. ([GitHub](https://github.com/fatihdagustu20-hub/x402-api-network))
      • dTelecom STT - Real-time speech-to-text API with dual-engine architecture (Parakeet-TDT + Whisper), 99+ languages, hallucination filtering, $0.005/min. Built on dTelecom DePIN. [Python SDK](https://github.com/dTelecom/stt-client-python) | [TypeScript SDK](https://github.com/dTelecom/stt-client-ts)
      • BlockRun - AI Gateway + Service Directory with 600+ x402 services indexed, trust scores, and 31+ AI models via pay-per-use USDC.
      • Einstein AI - AI blockchain intelligence with 23 x402 endpoints. Whale tracking, smart money, launchpad monitoring, security audits.
      • Rug Munch Intelligence - AI-powered crypto risk intelligence with 19 x402 endpoints. Rug pull detection, honeypot scoring, deployer tracking, holder deep-dive, KOL shill detection, social OSINT, and LLM forensic analysis (Claude Sonnet/Opus). $0.02–$2.00 USDC on Base. MCP server (19 tools), A2A agent card, AgentKit plugin. [Example Agent](https://github.com/CryptoRugMunch/x402-trading-agent) | [AgentKit](https://github.com/CryptoRugMunch/rug-agent-kit)
      • Apollo Intelligence Network - 27 x402 endpoints for AI agents: intelligence feeds (pain points, agentic trends, sentiment), crypto prices, OSINT (IP/domain intel), DeFi yields, real-time X/Twitter search, proxy infrastructure, and bundles. MCP server with 26 tools. USDC on Base. ([GitHub](https://github.com/bnmbnmai/mcp-proxy)) | ([npm](https://www.npmjs.com/package/@apollo_ai/mcp-proxy))
      • Crysha Price Oracle - Aggregated crypto prices (multi-source BTC/others), $0.001/call on Base USDC. Manifest: [/.well-known/x402](https://api.crysha.com/.well-known/x402)
      • MOSS Agent - AI-powered coding services: code review ($0.005), translation ($0.003), and code explanation ($0.003) via x402 micropayments on Base. A2A protocol compatible with agent discovery at [/.well-known/agent.json](https://moss.chobon.top/.well-known/agent.json). Built with Lucid Agents + Hono.
      • AnyBrowse - Autonomous web browsing agent with x402 micropayments. Converts URLs to LLM-ready Markdown via real Chrome browsers. USDC on Base.
      • Bloomfilter - x402-powered domain registration API for AI agents. Register ICANN domains and manage DNS, paying with USDC on Base
      • OpSpawn Bazaar - Suite of seven AI-powered x402 microservices including screenshot capture, sentiment analysis, summarization, translation, fact-checking, and entity extraction on Base network.
      • BlockRun - AI Gateway + Service Directory with 600+ x402 services indexed, trust scores, and 31+ AI models via pay-per-use USDC.
      • x402 Service Discovery API - Enriched directory of 251+ x402-payable services with trust signals, uptime tracking, latency metrics, and health scores. Auto-scans x402.org/ecosystem + awesome-x402 every 6h. Companion MCP server with 6 tools (x402_discover, x402_trust, x402_health_check, x402_route, etc.). Smart routing via [RouteNet](https://x402-routenet.onrender.com).
      • x402 RouteNet - Smart routing layer for x402-enabled services. Selects the optimal endpoint from 251+ indexed services based on price, latency, health score, or composite trust. Four routing strategies: `best` (composite score), `cheapest`, `fastest`, `most_trusted`. Works with the Discovery API — discover services, then route to the best one. ([GitHub](https://github.com/rplryan/x402-routenet))
      • Token Intelligence API - EVM token security analysis with deterministic risk scoring and natural language summaries via x402 micropayments. Aggregates GoPlus contract, holder, and liquidity data in one request. $0.005 USDC on Base. Cloudflare Workers + Hono. [Live](https://token-intel-api.tatsu77.workers.dev)
      • ShieldAPI - Security intelligence for AI agents: password breach checks (900M+ HIBP hashes), email breach lookup, domain/IP reputation, URL safety scanning, prompt injection detection, and skill security analysis. Pay-per-request via x402 USDC micropayments ($0.001–$0.02) on Base. No account, no API key. Free demo mode on all endpoints. [MCP Server](https://www.npmjs.com/package/shieldapi-mcp) | [CLI](https://www.npmjs.com/package/@vainplex/shieldapi-cli) | [GitHub](https://github.com/alberthild/shieldapi-mcp)
      • DJD AgentScore - chain reputation scoring API for AI agent wallets. Returns a 0–100 trust score across 5 dimensions (identity, behavior, reliability, viability, capability) from x402 settlement history on Base. Free tier, no signup.
      • MoltGuard - in-one trust & integrity API for the x402 agent economy. Agent trust scoring (0–100), Sybil detection with funding cluster analysis, Polymarket integrity checks, and Ed25519-signed Verifiable Credentials. Built on Base mainnet with Blockscout, ERC-8004, and MolTrust DID integration. $0.005–$0.05 USDC. 7 MCP tools available. ([GitHub](https://github.com/moltrust/moltguard)) | ([MCP](https://api.moltrust.ch/mcp))
      • CryptoSignalBot - x402-gated crypto volume anomaly scanner. Returns tokens with unusual trading volume patterns (current vs 30-day average). $0.01 USDC/request on Ethereum mainnet via Primev facilitator. Python/FastAPI. [Live endpoint](https://frog03-20494.wykr.es/api/signals/paid)
      • SIBYL - Autonomous crypto intelligence agent on Base. Three x402 endpoints: token scoring ($0.05), rug/honeypot detection ($0.02), and builder shipping velocity vs. market cap analysis ($0.10). ERC-8004 registered (Agent #20880). USDC on Base. Discovery: [Agent Card](https://sibylcap.com/8004.json) | [Domain Verification](https://sibylcap.com/.well-known/agent-registration.json)
      • KevinBot API - 20 AI-powered utility APIs + live NostalgiaForInfinityX7 crypto trading signals via x402 micropayments. Web search, crawling, SEO analysis, code review, email validation, QR generation, plus 8 real-time trading endpoints (open positions, signals, market regime, pair rankings, trade history). First x402 service exposing live algorithmic trading bot data. $0.001–$0.02 USDC on Base. MCP server with 20 tools. [GitHub](https://github.com/baitoxkevin/kevinbot-mcp) | [Agent Card](https://3000-4cc0720d75b8344a09384cd6f9240c66.life.conway.tech/.well-known/agent-card.json)
      • Find Domain - Domain research API for AI agents. Generates candidates from keywords with stemming, IDN normalization, and geo/registrar filtering, then checks availability via DNS estimate or registry lookup. $0.002–$0.01 USDC per query on Base. [skill.md](https://finddomain.io/skill.md)
      • APIMesh - payable web analysis APIs for AI agents. SEO audit, security headers, Core Web Vitals, domain availability, email security, email verify, tech stack detection, redirect chains, and more. $0.001–$0.01 per call, USDC on Base. MCP server: `npx @mbeato/apimesh-mcp-server`. ([GitHub](https://github.com/mbeato/conway))
      • BotIndex - AI-native signal intelligence API with 17 x402 endpoints across 7 domains: sports odds, crypto correlations, token graduations (Zora/Hyperliquid/Metaplex Genesis), DFS optimization, arbitrage detection, and agentic commerce comparison. 50 free premium requests per wallet, then $0.01–$0.50 USDC on Base. MCP server with 17 tools. ([GitHub](https://github.com/Cyberweasel777/King-Backend)) | ([npm](https://npmjs.com/package/botindex-mcp-server)) | ([Discovery](https://king-backend.fly.dev/.well-known/ai-plugin.json))

    • Developer Tools

    • Charity & Social Impact

      • x402 Charity - Open-source middleware for automatic micro-donations via x402. Embed charitable giving into any payment flow — trades, API calls, subscriptions. $0.0001 USDC per event on Base. CLI + web widget. Built by [AllScale Lab](https://allscale.io). ([GitHub](https://github.com/allscale-io/x402charity))

  • 🏗️ Facilitators

    • Self-Hosted Facilitators

    • Rust

      • Cloudflare x402 - Edge computing facilitator on Base/Ethereum with deferred settlement.
      • BNB Chain Pieverse - BNB Chain facilitator with instant settlement.
      • AsterPay - European x402 Facilitator with EUR off-ramp via SEPA Instant. MiCA compliant, ERC-8004 ready, ElizaOS plugin. First European-focused x402 infrastructure.
      • Primev FastRPC - Fee-free facilitator on Ethereum mainnet with sub-200ms settlement via [mev-commit](https://mev-commit.xyz) preconfirmations. ERC-8004 registered (Agent #23175).

  • 🤖 AI Agent Integration

    • Agent-to-Agent (A2A)

    • Model Context Protocol (MCP)

      • MCP Server Setup Guide - Complete installation instructions.
      • MaximumSats MCP - Lightning-native MCP tools with L402 micropayments and Nostr Web-of-Trust scoring APIs.
      • Apollo Intelligence MCP Server - 26-tool MCP server covering intelligence feeds, crypto, OSINT, DeFi, proxy, and search. `npx @apollo_ai/mcp-proxy`. ([GitHub](https://github.com/bnmbnmai/mcp-proxy))
      • Pylon MCP Server - 20-tool MCP server for utility APIs: web extraction, search, translation, code execution, image generation, email, and more. `npx @pylonapi/mcp`. ([GitHub](https://github.com/pylon-apis/pylon-mcp))
      • Intelligence Aeternum - First monetized MCP server marketplace. 2M+ museum artworks with x402 USDC micropayments on Base L2. 16 MCP tools for search, enrichment, and delivery. [Live](https://data-portal-172867820131.us-west1.run.app/mcp)
      • x402 Service Discovery MCP - MCP server for discovering 251+ x402-payable services at runtime with quality signals (uptime, latency, trust scores). 6 tools: x402_discover, x402_health_check, x402_trust, x402_register, x402_facilitator_check, x402_route. Smithery 100/100. Docker: `ghcr.io/rplryan/x402-discovery-mcp:latest`
      • Harvey Intel - x402-paid MCP server for Solana token rug pull detection (DrainBrain ML ensemble), trading signals, and social intelligence. 8 tools, $0.005–0.05 USDC on Solana. ([GitHub](https://github.com/meltingpixelsai/harvey-intel)) | ([npm](https://www.npmjs.com/package/@meltingpixels/harvey-intel))
      • Harvey Tools - x402-paid MCP server for web scraping, screenshots, structured data extraction, code review, content generation, and sentiment analysis. 8 tools, $0.005–0.05 USDC on Solana. ([GitHub](https://github.com/meltingpixelsai/harvey-tools)) | ([npm](https://www.npmjs.com/package/@meltingpixels/harvey-tools))
      • Harvey Verify - x402-paid MCP server for post-transaction outcome verification using LLM-as-judge. Tracks aggregated service quality scores. 5 tools, $0.002–0.01 USDC on Solana. ([GitHub](https://github.com/meltingpixelsai/harvey-verify)) | ([npm](https://www.npmjs.com/package/@meltingpixels/harvey-verify))
      • Harvey Budget - x402-paid MCP server for agent spending management with budget tracking, ROI analysis, and spend approval. 6 tools, $0.001–0.005 USDC on Solana. ([GitHub](https://github.com/meltingpixelsai/harvey-budget)) | ([npm](https://www.npmjs.com/package/@meltingpixels/harvey-budget))
      • PayBot MCP - MCP server enabling Claude and AI agents to make autonomous x402 payments. Supports wallet management, transaction history, and configurable spending limits. ([npm](https://www.npmjs.com/package/paybot-mcp))
      • APIMesh MCP Server - tool MCP server for web analysis: SEO, security headers, Core Web Vitals, domain availability, email security, email verify, tech stack detection, wallet spend tracking, and more. x402 micropayments on Base. `npx @mbeato/apimesh-mcp-server`. ([GitHub](https://github.com/mbeato/conway))
      • BotIndex MCP - 17-tool MCP server for signal intelligence: sports odds, crypto correlations, token graduations (Zora/Hyperliquid/Metaplex Genesis), DFS optimization, and arbitrage detection. 50 free requests per wallet, then x402 USDC on Base. `npx botindex-mcp-server`. ([npm](https://npmjs.com/package/botindex-mcp-server)) ([Live API](https://king-backend.fly.dev/api/botindex/v1/))
      • Azeth MCP Server - MCP server with x402 payment tool (`azeth_pay`), ERC-8004 trust registry discovery, on-chain reputation scoring, and payment agreements for recurring x402 billing. USDC on Base. ([npm](https://www.npmjs.com/package/@azeth/mcp-server))
      • Human Pages - The open directory AI agents use to hire humans for real-world tasks. Supports x402 pay-per-use for profile views ($0.05) and job offers ($0.25) in USDC on Base. Also available as an [MCP server](https://github.com/human-pages-ai/humanpages) with 31 tools.

    • Agent Frameworks

      • NEAR AI - Cross-chain agent settlements.
      • Phidata Agents - Multi-modal agents with x402.
      • Vault-0 - Encrypted secret vault, agent monitor, and x402 wallet for OpenClaw. Handles 402 detection, EIP-3009 signing, and policy-gated auto-settlement.

  • 💡 Example Applications

    • Full-Stack Applications

      • Video Paywall - Premium content access tutorial.
      • Weather API Service - Simple paid API endpoint.
      • Farcaster Mini App - Social app integration.
      • x402 Boilerplate — Conflux eSpace - Production-ready paid AI API with PHP backend, Node.js facilitator, CLI agent, Docker, 87 tests, and multi-wallet demo. EIP-3009 USDT0 settlement. [Live Demo](https://confluxarena.org/x402-demo).
      • x402 Dynamic Pricing - Demand-based surge pricing engine using x402 V2's dynamic `getAmount` callback. Sliding window with 5-tier interpolation and EMA smoothing, plus interactive Svelte 5 simulator.
      • Agent Arena - On-chain ERC-8004 agent registry with x402-gated search ($0.001 USDC/query) and registration ($0.05 USDC). Agents discover and hire each other autonomously on Base mainnet. No API keys required.

    • API Examples

      • REST API with Auth Pricing - SIWE + dynamic pricing.
      • Alfred's Digital Bazaar - ~100 x402-paywalled API endpoints built by an AI agent. Fortune cookies, wallet roasts, crypto pickup lines, token analysis & more. $0.10–$1.00 USDC per call on Base. No signup required. [Source](https://github.com/Alfredz0x/alfreds-digital-bazaar)
      • Scout MCP - Multi-source intelligence API for AI agents. Search across Hacker News, GitHub, npm, PyPI, Product Hunt, X/Twitter, and x402 Bazaar in one call. 10 endpoints from $0.001 USDC on Base. [Source](https://github.com/bartonguestier1725-collab/scout-mcp)
      • MoonMaker API - AI-native crypto data API with x402 pay-per-call. 11 endpoints: signals, market context, DeFi regime, institutions, ETF flows, DeFi yields, DEX alpha. $0.02–$0.10/call USDC on Base. No signup. [llms.txt](https://api.moonmaker.cc/llms.txt)
      • ShieldAPI MCP - 9-tool security MCP server: password breach, email breach, domain reputation, IP reputation, URL safety, full security scan, prompt injection detection, and skill security scanning. x402 USDC micropayments on Base or free demo mode. `npx shieldapi-mcp`. ([GitHub](https://github.com/alberthild/shieldapi-mcp))
      • DeFi Intelligence API - Unified DeFi security, bridging, and analytics for AI agents. 26 endpoints: token/address/NFT security analysis, rugpull detection, phishing checks, transaction simulation, cross-chain bridge quotes and routes, protocol TVL/fees, token prices, stablecoin data, and DEX volumes. Integrates GoPlus Security + LI.FI + DeFi Llama. $0.005–$0.01 USDC per call on Base.
      • Domain Intelligence API - Domain analysis for AI agents. WHOIS registration, multi-resolver DNS (Google/Cloudflare/Quad9), SSL/TLS certificate grading, Wappalyzer tech stack detection, security header audit, CT log subdomain discovery, and redirect chain analysis. 8 endpoints from $0.001 USDC on Base. [llms.txt](https://domain.hugen.tokyo/llms.txt)
      • Visual API - Screenshot and PDF capture API for AI agents. Render any public URL as pixel-perfect JPEG/PNG screenshots or A4 PDF documents. Full-page scroll capture, CSS element targeting, mobile device emulation (iPhone 15, Pixel 7, iPad Pro), dark mode, ad/cookie banner blocking. $0.01 USDC per call on Base.
      • x402 AI API — zeroreader - 29 Cloudflare Workers AI models (LLM, Embeddings, Image Generation, Audio, Translation) via x402 micropayments. $0.001–$0.015 per request, USDC on Base. Supports streaming, batch processing, OpenAI-compatible format. [llms.txt](https://api.zeroreader.com/llms.txt) | [OpenAPI](https://api.zeroreader.com/openapi.json)
      • Content Intelligence API - AI-powered web content extraction and analysis for AI agents. Clean text extraction with trafilatura (F1=0.909), metadata/OG tags, link classification, AI summarization with key points and entity extraction, full sentiment/topic/credibility analysis via Gemini. 5 endpoints from $0.003 USDC on Base.
      • Intel API - AI-synthesized token due diligence reports for crypto assets. Aggregates 4 GoPlus security checks + CoinGecko market data into risk-scored verdicts with red/green flags and recommendations. One call replaces 5+ separate security APIs. $0.50 USDC per call on Base.
      • PortsideLabs Places API - Google Places API v1 proxy with x402 pay-per-request access. Exposes place detail lookup and full-text search via USDC micropayments on Base mainnet and Solana mainnet. $0.001 USDC per call.

    • Client Examples

  • 🎯 Quick Start - Become an x402 Champion

  • 📚 Official Resources

  • 🚀 Quickstart Guides

  • ⚙️ Protocol Implementations

  • 🔧 Server Frameworks & Middleware

    • Node.js/TypeScript

    • Python

      • FastAPI example - Complete implementation.
      • x402 Payment Harness - Python library + CLI for x402 payments without requiring Coinbase CDP wallet. Works with any Ethereum EOA. Full HTTP 402 -> EIP-712 sign -> X-PAYMENT header flow. `pip install x402-payment-harness`. ([PyPI](https://pypi.org/project/x402-payment-harness/))

  • 🧪 Testing & Development

  • 🎥 Videos & Talks

  • 📝 Articles & Blog Posts

  • 👥 Community

  • Star History

  • 📊 Ecosystem Market Data

    • Analytics Dashboards

      • Dune Analytics x402 - Comprehensive on-chain metrics and visualizations including real-time transaction volumes, chain-by-chain analytics, facilitator comparison data, and revenue/fee metrics.
      • x402scan Explorer - Blockchain explorer for x402 payments with transaction search and verification, payment requirement inspection, and settlement status tracking.
      • CoinGecko x402 Category - Token tracking and market data featuring $180M+ tracked market cap, price charts, trading volumes, and ecosystem token listings.

  • 🚀 Migration Guides

    • From Traditional Payment Processors

      • From Stripe to x402 - Migrate subscription and one-time payments from Stripe to x402 for crypto-native payments with instant settlement. Includes API comparison, webhook migration strategies, customer migration approaches, and zero-fee cost analysis.

    • From Authentication to Payments

      • From API Keys to x402 Payments - Replace API key-based access control with payment-per-use models. Includes authentication middleware replacement, rate limiting evolution, revenue model transformation, and pay-per-request implementation.

    • From Subscription to Usage-Based

      • From Subscription to Pay-Per-Use - Transform monthly subscriptions into granular pay-as-you-go pricing. Includes SaaS model evolution, pricing psychology and conversion, customer acquisition benefits, and revenue optimization strategies.
Programming Languages
JavaScript 3 TypeScript 2 Rust 2 Svelte 1 Python 1 Go 1
Categories
🌟 Ecosystem Projects 40 💡 Example Applications 20 🤖 AI Agent Integration 19 👥 Community 10 📝 Articles & Blog Posts 9 🔒 Security & Audits 9 🔗 Related Protocols 8 🎥 Videos & Talks 8 🛠️ SDKs & Client Libraries 7 🔧 Server Frameworks & Middleware 7 ⚙️ Protocol Implementations 5 🏗️ Facilitators 5 Awesome Lists 5 🔨 Tools & Utilities 4 📖 Protocol Documentation 4 🏭 Production Implementations 3 📊 Ecosystem Market Data 3 🧪 Testing & Development 3 🚀 Quickstart Guides 3 🚀 Migration Guides 3 📚 Official Resources 3 🎯 Quick Start - Become an x402 Champion 1 Star History 1
Sub Categories
Tools & Services 31 Model Context Protocol (MCP) 15 API Examples 12 Full-Stack Applications 6 JavaScript/TypeScript 6 Issue Guidelines 6 Rust 6 Node.js/TypeScript 5 Use Case Articles 5 Developer Communities 4 DeFi & Finance 4 Tutorial Videos 3 High-Volume Production Deployments 3 Official Channels 3 Infrastructure 3 Monitoring & Analytics 3 Official Videos 3 Security Best Practices 3 Analytics Dashboards 3 Testnets 3 Agent Frameworks 3 Python 3 Payment Protocols 3 Conference Talks 2 Client Examples 2 Historical Reference 2 TypeScript/JavaScript 2 Technical Deep Dives 2 Events & Meetups 2 AI & Agent Protocols 2 Security Monitoring 2 Known Vulnerabilities & Mitigations 2 Official Blog Posts 1 Spending Controls & Policy Enforcement 1 Bug Bounty Programs 1 Developer Tools 1 Go 1 Newsletters 1 From Subscription to Usage-Based 1 CLI Tools 1 Web Standards 1 News Coverage 1 Agent-to-Agent (A2A) 1 Self-Hosted Facilitators 1 Charity & Social Impact 1 From Traditional Payment Processors 1 From Authentication to Payments 1
Keywords
awesome 5 awesome-list 5 ethereum 4 blockchain 3 bitcoin 2 mcp 2 monero 1 mastering-ethereum 1 mastering-bitcoin 1 ipfs 1 iota 1 fabric 1 eosio 1 eos 1 dpos 1 digital-currency 1 bulletproofs 1 web3 1 solidity 1 smart-contracts 1 unicorns 1 resources 1 lists 1 list 1 encryption 1 cryptography 1 crypto 1 x402 1 typescript 1 spending-limits 1 policy-engine 1 payments 1 observability 1 fintech 1 control-plane 1 ai-agents 1 agent-payments 1 web-of-trust 1 nostr 1 model-context-protocol 1 mcp-server 1 lightning-network 1 ai-tools 1 generative-ai 1 gen-ai 1 agents 1 agentic-ai 1 a2a-protocol 1 a2a 1 white-paper 1