x402 Protocol on Cronos

The SDK for building x402 tools on Cronos

Add x402 payments to any API or service in minutes. Offer free or paid tools. No blockchain code, no payment logic, no protocol complexity.

Get the SDK Explore Tools
x402 Tools on Cronos
$ npm install @cronos-mcp/server-sdk
✓ Installing dependencies...
✓ Package installed successfully
$ npm run start
→ Server running
→ Registered to x402 Explorer
→
Client requests get_btc_price
$
402 Payment Required $0.001 USDC.e
✓
Payment verified via Facilitator
✓
Response sent BTC: $98,450
Getting Started

Two ways to use CronosMCP

Build paid APIs or discover existing tools in the ecosystem.

Server SDK

Build x402 enabled tools and APIs with built in payment handling. Set your price (or make it free), deploy, and receive USDC.e directly to your wallet.

Get Started →
x402

x402 Explorer

Discover all x402 enabled tools and services on Cronos, both free and paid. Browse by category, price, or capability. The open registry for x402 APIs.

Browse Registry →
SDK Features

What the SDK handles

Focus on your tool logic. We handle everything else.

x402

x402 Protocol

Payment requests, EIP-712 signatures, and verification handled automatically.

Cronos

Cronos Settlement

Instant USDC.e payments directly to your wallet. Low fees, fast confirmations.

Auto Discovery

Tools using CronosMCP SDK auto-register to the x402 Explorer on startup. No manual setup needed.

Explorer

x402 Explorer

The central hub for discovering x402 enabled tools on Cronos. Tools built with CronosMCP SDK are automatically added.

  • Tools using CronosMCP SDK auto-register on startup
  • Filter by free or paid services
  • View endpoint URLs and pricing details
Open Explorer Register
Quick Start

From zero to deployed

No payment gateways. Just npm install.

  • 1 Set your wallet address
  • 2 Define your tool (free or paid)
  • 3 Start the server
  • 4 Receive USDC.e payments through x402
server.ts
Get Started

Start building x402 tools today

Install the SDK and deploy your first tool in minutes

Read the Docs Register Your Tools