PROXIES.SX

x402 PAYMENT PROTOCOL

HTTP 402 Payment Required for machine-to-machine USDC payments. No accounts, no API keys.

How It Works

1. Request without payment    GET /v1/x402/proxy?country=US&traffic=1
2. Receive 402 response       price, recipient wallet, supported networks
3. Send USDC on-chain         Base (~2s) or Solana (~400ms)
4. Retry with payment proof   Payment-Signature: <tx_hash>
5. Receive proxy credentials  host, port, username, password, session token

Payment Networks

Pricing

Quick Start

# 1. Request proxy (receive 402 with payment info)
curl -s https://api.proxies.sx/v1/x402/proxy?country=US&traffic=1

# 2. After sending USDC, retry with tx hash
curl -s https://api.proxies.sx/v1/x402/proxy?country=US&traffic=1 \
  -H "Payment-Signature: YOUR_TX_HASH"

# 3. Check session
curl -s https://api.proxies.sx/v1/x402/manage/session \
  -H "X-Session-Token: x402s_YOUR_TOKEN"

# 4. Replace offline port (free, max 3)
curl -s -X POST https://api.proxies.sx/v1/x402/manage/ports/replace \
  -H "X-Session-Token: x402s_YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"country":"US"}'

# 5. Top up session (pay for more traffic)
curl -s -X POST https://api.proxies.sx/v1/x402/manage/session/topup \
  -H "X-Session-Token: x402s_YOUR_TOKEN" \
  -H "Payment-Signature: NEW_TX_HASH" \
  -H "Content-Type: application/json" \
  -d '{"addTrafficGB":2,"addDurationSeconds":86400}'

All x402 Endpoints

Token = X-Session-Token: x402s_<hex> header. x402 = Payment-Signature: <tx_hash> header.

Post-Purchase Management

Port Replacement - If proxy goes offline, POST /manage/ports/replace for free replacement. Max 3 per session.
Session Top-Up  - Add traffic ($4/GB) or duration (free). POST /manage/session/topup with Payment-Signature.
Port Recreation - If port deleted but session has credit, POST /manage/ports/recreate.
IP Rotation     - GET /rotate/:token to rotate IP without auth.

PRODUCTS

x402-gated mobile proxies at api.proxies.sx. Pay with USDC. Plus a Peer Network where agents and devices earn USDC by sharing bandwidth.

Mobile Proxy

Real 4G/5G proxy access from 6 countries (US, DE, GB, FR, ES, PL). HTTP and SOCKS5, city/carrier targeting, auto IP rotation. Free port replacement (max 3) and session top-up. Buy a proxy.

Pool Gateway Access

One USDC payment buys one credential that reaches every country in your tier through the shared Pool Gateway (gw.proxies.sx:7000) - no per-country repurchase. Metered and capped. v1 tier mbl (production modems), $4/GB. Buy at GET/POST /v1/x402/pool (no payment returns HTTP 402 with the tier catalog; pay USDC and retry to receive credentials). Quickstart.

Peer Network

Share mobile/residential bandwidth and earn USDC. Per-GB rates by IP type (mobile > residential > datacenter), returned in earningsPerGB at registration. Start earning.

MCP SERVER

@proxies-sx/mcp-server v2.0.0 - 73 tools for AI agents to manage proxy infrastructure via Model Context Protocol.

Install

npx -y @proxies-sx/mcp-server

Claude Desktop Config

// API Key mode (account required)
{
  "mcpServers": {
    "proxies-sx": {
      "command": "npx",
      "args": ["-y", "@proxies-sx/mcp-server"],
      "env": { "PROXIES_API_KEY": "psx_your_key" }
    }
  }
}

// x402 mode (no account needed)
{
  "mcpServers": {
    "proxies-sx": {
      "command": "npx",
      "args": ["-y", "@proxies-sx/mcp-server"],
      "env": { "AGENT_WALLET_KEY": "your_private_key", "PREFERRED_NETWORK": "base" }
    }
  }
}

Tool Categories (55 total)

PEER MARKETPLACE - EARN USDC

Share your internet bandwidth, get paid in USDC on Solana. AI agents and humans connect via WebSocket, route traffic, earn automatically.

Earnings by IP Type

Per-GB earnings accumulate automatically. IP type determined server-side via ASN lookup. Min payout: $5 USDC.

How It Works

1. Register     POST /v1/peer/agents/register - get JWT + device ID
2. Connect      wss://relay.proxies.sx with Sec-WebSocket-Protocol: token.{JWT}
3. Tunnel       Receive tunnel_connect - open TCP to the target - stream bytes both ways
4. Earn         Earnings credited per GB. Request payout min $5 USDC to Solana wallet.

Fastest start - use a ready, tested SDK (it does the whole protocol for you): Node.js · Go · Windows · Android. Full guide at the Peer Network page. The inline snippets below are only for building your own client (and use streaming tunnel_connect, not the legacy proxy_request).

Register

curl -s -X POST https://api.proxies.sx/v1/peer/agents/register \
  -H "Content-Type: application/json" \
  -d '{
    "name":"my-agent",
    "type":"claude",
    "walletAddress":"YOUR_SOLANA_ADDRESS",
    "apiKey":"psx_YOUR_API_KEY"
  }'

# Response:
# { "deviceId": "agent_abc123", "jwt": "eyJ...", "refreshToken": "a1b2...",
#   "relay": "wss://relay.proxies.sx",
#   "earningsPerGB": { "mobile": <number>, "residential": <number>, "datacenter": <number> } }
#
# Per-GB rates are set by the platform - read earningsPerGB for live values.
# Tier order: mobile > residential > datacenter. Rates can change anytime.
# Min payout: $5 (agents) / $10 (Android SDK).
# JWT expires in 1h - refresh via POST /v1/peer/agents/{id}/refresh.

Connect to Relay

const ws = new WebSocket('wss://relay.proxies.sx', [`token.${JWT}`]);

ws.onopen = () => {
  ws.send(JSON.stringify({ type: 'device_info', payload: { country: 'US' } }));
};

ws.onmessage = (event) => {
  const msg = JSON.parse(event.data);
  if (msg.type === 'proxy_request') {
    const { requestId, method, url, headers, body } = msg.payload;
    fetch(url, { method, headers, body: body ? atob(body) : undefined })
      .then(async (res) => {
        const buf = await res.arrayBuffer();
        ws.send(JSON.stringify({
          type: 'proxy_response',
          payload: { requestId, statusCode: res.status,
                     headers: Object.fromEntries(res.headers),
                     body: btoa(String.fromCharCode(...new Uint8Array(buf))) }
        }));
      });
  }
  if (msg.type === 'heartbeat') ws.send(JSON.stringify({ type: 'heartbeat_ack' }));
};

Peer API Endpoints

Security

Monthly Earnings Estimates

Android SDK

// build.gradle
implementation("com.github.bolivian-peru:android-peer-sdk:1.3.1")

// Usage
ProxiesPeerSDK.init(context, "api-key", config)
ProxiesPeerSDK.getInstance().start()  // Start sharing
ProxiesPeerSDK.getInstance().stop()   // Stop sharing

SDK & PACKAGES

npm Packages

GitHub

Framework Integrations

x402 SDK Example

import { createPaymentRequirement } from '@proxies-sx/x402-core';
import { x402Middleware } from '@proxies-sx/x402-hono';
import { verifySolanaPayment } from '@proxies-sx/x402-solana';

const app = new Hono();
app.use('/api/*', x402Middleware({
  price: 10000,  // $0.01 in micro-units
  recipient: 'YOUR_SOLANA_WALLET',
  verify: verifySolanaPayment,
}));
app.get('/api/data', (c) => c.json({ data: 'premium content' }));

LINKS

Discovery Files (machine-readable)

Live Domains

Social

Twitter/X | Telegram | GitHub | Dashboard