# Awesome x402 Ecosystem

> The HTTP 402 Payment Required protocol for AI agent micropayments.  
> Now governed by the **Linux Foundation** with 40 member organizations.  
> Curated by [minia2a.uk](https://minia2a.uk) — Last updated July 29, 2026.

## Official Resources

- [x402 Foundation](https://x402.org) — Official website (WordPress)
- [x402-foundation/x402](https://github.com/x402-foundation/x402) — Canonical spec + multi-language SDKs (TypeScript, Python, Go, Java, Rust)
- [@x402/core](https://www.npmjs.com/package/@x402/core) — Core protocol library (npm, v2.20.0, by Coinbase)
- [@x402/fetch](https://www.npmjs.com/package/@x402/fetch) — Fetch wrapper with x402 payment handling

## Marketplaces & Discovery

| Platform | Type | Status | Notes |
|----------|------|--------|-------|
| **[minia2a.uk](https://minia2a.uk)** | Marketplace | 🟢 Live | 139 services, 30 agents, USDC on Base. No signup, no KYC. |
| [Agentic.Market](https://agentic.market) | Marketplace | 🟢 Live | Coinbase. 480K+ agents, auto-indexing on payment. |
| [Satring](https://satring.com) | Directory | 🟢 Live | Multi-protocol (L402 + x402 + MPP), curated. |
| [Cinderwright](https://api.ideafactorylab.org) | Discovery Hub | 🟢 Live | 2,835+ services, x402+L402 bridge. |
| [agent-tools.cloud](https://agent-tools.cloud) | Directory | 🟢 Live | 20K+ MCP servers + 400+ x402 APIs. Free auto-review listing. |
| [AgentShare MCP Registry](https://agentshare.dev) | Registry | 🟢 Live | Self-submit via x402 micropayment. Human review. |

## SDKs & Language Libraries

### TypeScript / JavaScript
- [Primer-Systems/x402](https://github.com/Primer-Systems/x402) — Full SDK (TS + Python), v1.1.0, ERC-20 support
- [bosonprotocol/x402B](https://github.com/bosonprotocol/x402B) — Non-custodial escrow payments
- [krystiangw/agenticpay](https://github.com/krystiangw/agenticpay) — MCP-native, Solana + USDC
- [nuwa-protocol/x402-exec](https://github.com/nuwa-protocol/x402-exec) — Programmable settlement with hooks
- [StartupHub-AI/x402-mesh](https://github.com/StartupHub-AI/x402-mesh) — Peer referral + commission protocol

### Rust
- [monad-developers/x402-rs](https://github.com/monad-developers/x402-rs) — Axum middleware, reqwest client, local facilitator
- [fastnear/x402-near-facilitator](https://github.com/fastnear/x402-near-facilitator) — Production NEAR + Base USDC, PostgreSQL journaling

### Python / AI-Specific
- [Hober-Protocol/x402-ai](https://github.com/Hober-Protocol/x402-ai) — AI inference layer, 17 providers / 100+ models

### Experimental
- [x402-Systems/xmr-x402-facilitator](https://github.com/x402-Systems/xmr-x402-facilitator) — Monero (XMR) facilitator, privacy-preserving

## Facilitators (Payment Processors)

| Facilitator | Network | Status |
|-------------|---------|--------|
| [CDP (Coinbase)](https://api.cdp.coinbase.com/platform/v2/x402) | EVM, Base | 🟢 Production |
| [PayAI](https://facilitator.payai.network) | Multi-chain | 🟢 Production (v1 + v2 with EIP-3009) |
| [Celo](https://x402.celo.org) | Celo | 🟢 Production |

## News & Timeline

### July 2026
- **July 14**: Linux Foundation operationally launches [x402 Foundation](https://www.linuxfoundation.org/press/linux-foundation-announces-operational-launch-of-x402-foundation-to-standardize-internet-native-payments-for-ai-agents-and-applications) with 40 members
- **July 2026**: Mastercard launches [AP4M](https://www.ainvest.com/news/mastercard-launches-ap4m-platform-ai-driven-m2m-payments-2607/) (Agent Pay for Machines)

### Premier Members
Google, Stripe, Visa, Mastercard, AWS, Cloudflare, Coinbase, Shopify, American Express, Adyen, Fiserv, Circle, MoonPay, Ripple, Solana Foundation, Stellar Development Foundation, Monad Foundation

### General Members
Aleo, Fireblocks, Injective, KakaoPay, Kite AI, LayerZero, NEAR Foundation, Polygon Labs, Quant Network, SKALE, World Liberty Financial (plus 8 more)

### Associate Members
BSV Association, Cardano Foundation, Casper, Japan Contents Blockchain Initiative, OMA3

## Get Started

```bash
# Browse live x402 services (139 and growing)
curl https://minia2a.uk/api/services

# Register your agent (one command)
curl -sSL https://minia2a.uk/install | bash

# LLM-friendly full catalog
curl https://minia2a.uk/llms-full.txt

# MCP server manifest
curl https://minia2a.uk/mcp.json
```

## See Also

- [A402 paper (Peking University)](https://arxiv.org/html/2603.01179v1) — Academic improvement: Atomic Service Channels with TEE
- [Fuse AI](https://docs.fuse.io/docs/developers/building-on-fuse/fuse-ai/) — Multi-protocol agentic payments (x402 + MPP + UCP + ACP + ERC-8183)
- [Base Docs: Accepting Payments](https://docs.base.org/ai-agents/payments/accepting-payments) — Official Base x402 guide
- [Polygon Agentic Services](https://docs.polygon.technology/payment-services/agentic-payments/agentic-services) — Polygon's x402 service directory

## Contribute

Know a resource I missed? Have an x402 implementation to add? Open an issue or PR on GitHub — or better yet, register it on [minia2a.uk](https://minia2a.uk) and it'll be discoverable to every x402-enabled agent.

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*Curated by [minia2a.uk](https://minia2a.uk) — The Stripe for AI Agents. USDC on Base. Zero KYC.*