x402 Private Web Tools

Private web tools for AI agents — search, scrape, and screenshot the web with x402 micropayments (USDC on Base). Zero logging, no API keys, no accounts. Pay per use.

Search, scrape, and screenshot the web privately. Uses the x402 payment protocol — your agent pays per request with USDC on Base mainnet. No API keys, no accounts, no logging.

Services:

• 🔍 Web Search — Multi-engine private search ($0.002/query)
• 🕸️ Web Scrape — Extract clean markdown from any URL ($0.005/page)
• 📸 Screenshot — Capture any URL as PNG/JPEG ($0.002/shot)

Gateway: https://search.reversesandbox.com

Prerequisites

• Node.js 18+
• A Base mainnet wallet with ETH (gas) and USDC (payments)

First-Time Setup

1. Install dependencies

bash <skill-dir>/scripts/setup.sh

Installs the x402 SDK to ~/.x402-client/. Only needed once.

2. Generate a wallet (if you don't have one)

node <skill-dir>/scripts/wallet-gen.mjs --out ~/.x402-client/wallet.key

3. Fund the wallet

Send USDC and a small amount of ETH (for gas) on Base mainnet to the wallet address printed by wallet-gen.

• USDC on Base: Bridge from any chain or buy on an exchange
• ETH on Base: ~$0.50 is enough for thousands of requests

4. Store the key

export X402_PRIVATE_KEY=$(cat ~/.x402-client/wallet.key)

Or pass --key-file ~/.x402-client/wallet.key to each request.

Usage

All commands run from ~/.x402-client/:

cd ~/.x402-client && node <skill-dir>/scripts/x402-fetch.mjs "<url>" --key-file wallet.key

Web Search ($0.002/query)

node <skill-dir>/scripts/x402-fetch.mjs \
  "https://search.reversesandbox.com/web/search?q=latest+AI+news&count=10" \
  --key-file ~/.x402-client/wallet.key

Parameters: q (required), count (1-20, default 10), offset (default 0)

Response:

{
  "query": { "original": "latest AI news" },
  "web": {
    "results": [
      { "title": "...", "url": "...", "description": "..." }
    ]
  }
}

Web Scrape ($0.005/page)

node <skill-dir>/scripts/x402-fetch.mjs \
  "https://search.reversesandbox.com/scrape/extract" \
  --method POST \
  --body '{"url": "https://example.com", "format": "markdown"}' \
  --key-file ~/.x402-client/wallet.key

Body (JSON): url (required), format ("markdown"|"text", default "markdown"), includeLinks (bool), timeout (ms)

Response:

{
  "title": "Example Domain",
  "content": "# Example Domain\nThis domain is for use in...",
  "url": "https://example.com",
  "timestamp": "2026-02-16T09:00:00.000Z",
  "format": "markdown"
}

Screenshot ($0.002/shot)

node <skill-dir>/scripts/x402-fetch.mjs \
  "https://search.reversesandbox.com/screenshot/?url=https://example.com&width=1280&height=720" \
  --key-file ~/.x402-client/wallet.key \
  --save screenshot.png

Parameters: url (required), format (png|jpeg, default png), width (320-3840), height (200-2160), fullPage (true|false), quality (1-100, jpeg only)

Returns: Binary PNG or JPEG image. Use --save <file> to write to disk.

MCP Server

For MCP-compatible agents (Claude, etc.), use the MCP server:

# Install
npm install -g x402-tools-mcp

# Run (set your wallet key)
X402_PRIVATE_KEY=0x... x402-tools-mcp

GitHub: https://github.com/kodos-vibe/x402-tools-mcp

Provides tools: web_search, web_scrape, screenshot

Free Endpoints (no payment required)

• GET /health — Service status
• GET /routes — List all endpoints with prices

Troubleshooting

• "insufficient funds": Wallet needs more USDC or ETH on Base mainnet.
• 402 with no auto-payment: Ensure setup.sh was run and you're in ~/.x402-client/.
• Slow scrape (10s+): Complex JS-heavy pages take longer. Use the timeout parameter.
• Empty search results: Try different query terms. Some niche queries may return fewer results.