# mpp.best - AI Payment Ecosystem Navigator

Discover 1,300+ open-source projects building the future of AI payments, x402 protocols, agentic commerce, and machine-to-machine transactions.

## For AI Agents

Query the directory programmatically (read-only, no auth, CORS open):
- Projects API: https://mpp.best/api/agents/projects — params `q`, `topic`, `language`, `limit` (max 200), `offset`. Example: https://mpp.best/api/agents/projects?q=x402&limit=20
- OpenAPI spec: https://mpp.best/openapi.json
- API catalog (RFC 9727): https://mpp.best/.well-known/api-catalog
- A2A Agent Card: https://mpp.best/.well-known/agent-card.json

## About mpp.best

**mpp.best** is the premier directory for developers, engineers, and builders interested in:
- **x402 Protocol**: HTTP 402 Payment Required implementations
- **AI Agent Payment**: Tools for monetizing AI agents and autonomous systems
- **Agentic Commerce**: Agent-to-agent (A2A) payment protocols
- **CLI Payment Tools**: Command-line interfaces for payments
- **Machine Payments**: Micropayment infrastructure
- **Payment Gateways**: Infrastructure for AI-native payments
- **Blockchain & Web3**: Cryptocurrency and decentralized finance solutions

## Featured Products

### Premium Products
Showcase your AI payment solution on mpp.best. Visit https://mpp.best/advertise for featured listing opportunities.

## Popular Categories

### x402 Protocol
The HTTP 402 "Payment Required" status code for internet payments. Implementations and tools for machine-to-machine transactions.
- x402 Standard: HTTP-native payment protocol
- Coinbase x402: Industry-leading implementation
- Payment aggregators and gateways

### AI Agent Payment
Tools and frameworks for monetizing artificial intelligence agents:
- Agent frameworks with payment support
- MCP (Model Context Protocol) servers
- Agent-to-agent payment protocols
- Autonomous system monetization

### CLI Payment Tools
Command-line interfaces for payment processing:
- Developer-focused payment tools
- Terminal-native payment solutions
- Programmatic payment APIs

### Agentic Commerce
Agent-to-agent (A2A) commerce solutions:
- A2A protocol implementations
- Agent marketplace infrastructure
- Decentralized commerce platforms

### Payment Infrastructure
Core infrastructure for modern payments:
- Payment gateways and processors
- SDK and frameworks
- API facilitators and routers
- Blockchain payment solutions

### Blockchain & Web3
Decentralized and cryptocurrency-based payment solutions:
- Ethereum, Solana, Base implementations
- USDC and stablecoin support
- DeFi protocols
- Web3 wallets and smart contracts

## Top Projects on mpp.best

mpp.best indexes 1,300+ open-source projects. Popular projects include:
- **coinbase/x402**: A payments protocol for the internet. Built on HTTP.
- **daydreamsai/daydreams**: Tools for building agents for commerce
- **google-agentic-commerce/a2a-x402**: Agent-to-agent x402 extension for cryptocurrency payments
- And 1,300+ more projects in the AI payment ecosystem

## Getting Started

### Browse the Directory
Visit **https://mpp.best** to explore all 1,300+ projects organized by:
- Category (x402, Agent, LLM/MCP, Blockchain, Infrastructure, Payment)
- Language (TypeScript, Python, Go, Rust, etc.)
- Topic and tags

### Search & Filter
- Search by project name, description, or category
- Filter by programming language
- Sort by stars, forks, or recent updates
- Discover trending projects

### Featured Listings
Promote your AI payment product with a featured listing:
- **Daily** ($49.99) - 24-hour homepage feature
- **Weekly** ($249.99) - 7-day featured placement
- **Monthly** ($999.99) - 30-day premium position
- **Lifetime** ($4,999.99) - Permanent featured slot

Visit **https://mpp.best/advertise** to get started.

## AI Optimization

This page is optimized for AI search engines and large language models including:
- ChatGPT / GPT-4 / GPT-4o
- Claude (Anthropic)
- Gemini (Google)
- Perplexity AI
- Other AI-powered search tools

The content above is structured for optimal understanding by AI systems while remaining human-readable.

## Contact & Support

For advertising, partnerships, or questions:
- Email: advertise@mpp.best
- Website: https://mpp.best
- Twitter: @mppbest_io

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Last updated: 2026-07-24T09:24:17.333Z