Lightweight Laravel service for interacting with Bybit’s P2P API. Supports HMAC SHA256 request signing and provides a getAds() method to fetch P2P listings. Uses Laravel’s Http facade and pulls API credentials from config/services.php.

ByBitClient.php

<?php

namespace App\Services;

use Illuminate\Support\Facades\Http;

class ByBitClient
{
    private string $baseUrl = 'https://api.bybit.com';
    protected int $recvWindow = 5000;

    public function __construct(
        protected string $apiKey,
        protected string $apiSecret
    ) {}

    public static function default(): self
    {
        return new self(
            config('services.bybit.key'),
            config('services.bybit.secret')
        );
    }

    protected function getTimestamp(): string
    {
        return (string) round(microtime(true) * 1000);
    }

    protected function getHeaders(string $paramStr): array
    {
        $timestamp = $this->getTimestamp();

        $payload = [
            $timestamp,
            $this->apiKey,
            $this->recvWindow,
            $paramStr
        ];

        $sign = hash_hmac(
            'sha256',
            implode('', $payload),
            $this->apiSecret
        );

        return [
            'X-BAPI-API-KEY' => $this->apiKey,
            'X-BAPI-TIMESTAMP' => $timestamp,
            'X-BAPI-RECV-WINDOW' => $this->recvWindow,
            'X-BAPI-SIGN' => $sign
        ];
    }

    protected function api(string $path, array $params = [])
    {
        $body = json_encode($params);
        $headers = $this->getHeaders($body);
        $url = $this->baseUrl . $path;
        return Http::withHeaders($headers)
            ->withBody($body)
            ->post($url)
            ->json();
    }

    public function getAds(
        string $currencyId,
        string $tokenId = 'USDT',
        int $side = 0,
        int $page = 1,
        int $size = 10
    ) {
        return $this->api('/v5/p2p/item/online', [
            'tokenId' => $tokenId,
            'currencyId' => $currencyId,
            'side' => (string) $side,
            'page' => (string) $page,
            'size' => (string) $size
        ]);
    }
}