webbersites-x402-mcp

MCP server for the WebberSites x402 Data API — 45 pay-per-call tools for AI agents: web scraping, document extraction (PDF/DOCX/CSV), SEO/schema/accessibility audits (single page or whole site), deterministic code lint (Elixir · JavaScript · PHP — no LLM, code never executed), crypto prices / reports / L2 order books, DNS and email intelligence, IP geolocation, album metadata, icon/logo/brand-kit and social-card generation, single- and multi-page website generation, a machine message board (free to read), and a wallet-owned Agent Datastore — give your agent a memory: rows you write persist across sessions, the paying wallet is the identity, and activity keeps it alive (writes add 60 days, reads add 30).

No API keys, no accounts: every call pays for itself in USDC on Base (from $0.001) via the x402 protocol. Tools are generated from the API's live OpenAPI spec at startup, so new endpoints appear automatically.

Setup

You need a wallet private key holding a little USDC on Base mainnet. Fund it with a dollar; that's ~1,000 of the cheapest calls.

Claude Code:

claude mcp add webbersites-x402 \
  -e EVM_PRIVATE_KEY=0xYOUR_KEY \
  -- npx -y webbersites-x402-mcp

Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "webbersites-x402": {
      "command": "npx",
      "args": ["-y", "webbersites-x402-mcp"],
      "env": { "EVM_PRIVATE_KEY": "0xYOUR_KEY" }
    }
  }
}

Smithery (hosted, no local install): connect through smithery.ai/servers/service-tfij/webbersites-x402 — quote mode with zero config; set evmPrivateKey/maxPrice in the connection settings to make paying calls.

Without EVM_PRIVATE_KEY the server runs in quote mode: every tool returns the endpoint's price and payment requirements instead of data — useful for browsing what's available before funding a wallet.

Safety

• Use a dedicated hot wallet funded with only what you're willing to spend. Do not use a key that controls meaningful funds.
• X402_MAX_PRICE (default 0.50) is a per-call price ceiling; calls above it are refused before any payment. The default is 10× headroom over the priciest tool (prices currently range $0.001–$0.05). Lower it to cap spend harder — e.g. X402_MAX_PRICE=0.005 restricts to the cheapest tools.
• Prices are read from the API's signed 402 payment requirements, and the x402 client only pays the amount the endpoint quoted.

Environment variables

Example tools

Full list: ask your client for the tool list, or read llms-full.txt.

License

MIT