# Arc MPP Demo API

Payment-gated APIs built on Arc Testnet using Machine Payments Protocol (MPP).
Each endpoint requires a USDC micropayment via HTTP 402 before returning data.

## Base URL
https://arc-mpp-demo.vercel.app

## Payment
Protocol: MPP (Machine Payments Protocol)
Chain: Tempo testnet (pathUSD)
Auto-handled by: npx mppx <url>

## Endpoints

### GET /api/dex-price
Price: 0.001 USDC
Description: Real-time USDC/EURC prices from ArcDEX AMM on Arc Testnet
Contract: 0x1A142DF560a671c66c361A29a48Ab839Bc9F890E
Returns: priceUSDCinEURC, priceEURCinUSDC, reserveUSDC, reserveEURC, totalShares

### GET /api/agent-data
Price: 0.01 USDC
Description: ERC-8004 on-chain agent identity and reputation data
Contract: 0x5275783cD74eC21739Af8f3be9c42C024F671cFb
Returns: agentId, name, reputationScore, totalMissions, successRate, status

### GET /api/arc-stats
Price: 0.005 USDC
Description: Live Arc Testnet blockchain statistics
Returns: blockNumber, txCount, gasPrice, gasPriceUSDC, chain, contracts

### GET /api/stream
Price: 0.0001 USDC per token
Description: Server-Sent Events stream of Arc Testnet data
Returns: SSE stream with blockNumber and chain events

## Usage (CLI)
npx mppx https://arc-mpp-demo.vercel.app/api/dex-price
npx mppx https://arc-mpp-demo.vercel.app/api/agent-data
npx mppx https://arc-mpp-demo.vercel.app/api/arc-stats

## Source
GitHub: https://github.com/consumeobeydie/arc-mpp-demo
SDK: npm install @consumeobeydie/arc-agent-sdk
Showcase: https://github.com/consumeobeydie/arc-testnet-journey