PHP code example of johnguoy / laravel-x402

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

johnguoy / laravel-x402 example snippets

// config/x402.php

return [

    // Which facilitator to use by default
    'default_facilitator' => env('X402_FACILITATOR', 'coinbase'),

    // Facilitator endpoints
    'facilitators' => [
        'coinbase'   => ['url' => env('X402_COINBASE_URL',   'https://facilitator.cdp.coinbase.com'), 'timeout' => 10],
        'cloudflare' => ['url' => env('X402_CLOUDFLARE_URL', 'https://x402.cloudflare.com'),          'timeout' => 10],
        'stellar'    => ['url' => env('X402_STELLAR_URL',    'https://facilitator.stellar.org'),       'timeout' => 10],
        'dexter'     => ['url' => env('X402_DEXTER_URL',     'https://facilitator.dexter.cash'),       'timeout' => 10],
        'mogami'     => ['url' => env('X402_MOGAMI_URL',     'https://facilitator.mogami.tech'),       'timeout' => 10],
        'testnet'    => ['url' => env('X402_TESTNET_URL',    'https://x402.org/facilitator'),          'timeout' => 15],
    ],

    // Your receiving wallet address (EVM: 0x…, Solana: base58 pubkey)
    'wallet_address' => env('X402_WALLET_ADDRESS'),

    // Default network in CAIP-2 format
    'network' => env('X402_NETWORK', 'eip155:8453'), // Base Mainnet

    // Default payment scheme
    'scheme' => env('X402_SCHEME', 'exact'),

    // On-chain token contract addresses, keyed by symbol then CAIP-2 network
    'assets' => [
        'USDC' => [
            'eip155:8453'  => '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913', // Base Mainnet
            'eip155:84532' => '0x036CbD53842c5426634e7929541eC2318f3dCF7e', // Base Sepolia
            'eip155:1'     => '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', // Ethereum
            'eip155:137'   => '0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359', // Polygon
        ],
    ],

    // Token decimal places (USDC = 6, ETH = 18, SOL = 9, …)
    'decimals' => [
        'USDC' => 6, 'USDT' => 6, 'EURC' => 6,
        'DAI'  => 18, 'ETH' => 18, 'WETH' => 18, 'MATIC' => 18,
        'SOL'  => 9, 'XLM' => 7,
    ],

    'asset'               => env('X402_ASSET', 'USDC'),
    'max_timeout_seconds' => (int) env('X402_MAX_TIMEOUT_SECONDS', 60),
    'description'         => env('X402_DESCRIPTION', 'API access via x402'),
    'mime_type'           => env('X402_MIME_TYPE', 'application/json'),
];

// routes/api.php

use Illuminate\Support\Facades\Route;

// Basic: 1 cent per request, defaults from config
Route::get('/api/data', fn () => response()->json(['result' => 'secret']))
    ->middleware('x402:0.01');

// Custom price with explicit asset
Route::get('/api/premium', [ReportController::class, 'daily'])
    ->middleware('x402:0.10,USDC');

// Specify price, asset, and a non-default facilitator
Route::get('/api/pro', [ProController::class, 'data'])
    ->middleware('x402:1.00,USDC,coinbase');

// Group: same price for a whole section of your API
Route::middleware('x402:0.05')->group(function () {
    Route::get('/api/report/daily',  [ReportController::class, 'daily']);
    Route::get('/api/report/weekly', [ReportController::class, 'weekly']);
});

use JohnGuoy\LaravelX402\Facades\X402;

// Resolve a facilitator and call it manually
$facilitator = X402::facilitator('coinbase');
$result = $facilitator->verify($paymentPayload, $

use JohnGuoy\LaravelX402\Support\PaymentAmount;

$amount = app(PaymentAmount::class);

// Human-readable → atomic units (BCMath, no float drift)
$amount->toAtomicUnits('0.01', 'USDC');   // "10000"
$amount->toAtomicUnits('1',    'USDC');   // "1000000"
$amount->toAtomicUnits('1',    'ETH');    // "1000000000000000000"

// Atomic units → human-readable
$amount->fromAtomicUnits('10000',   'USDC');  // "0.010000"
$amount->fromAtomicUnits('1000000', 'USDC');  // "1.000000"

// Parse price strings
$amount->parsePrice('$0.01');        // ['amount' => '0.01', 'symbol' => 'USDC']
$amount->parsePrice('0.01 USDT');    // ['amount' => '0.01', 'symbol' => 'USDT']

// Register a custom token (e.g., 8 decimals)
$amount->register('MYTOKEN', 8);

bash
php artisan vendor:publish --tag=x402-config