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

| Variable | Default | Purpose | | --- | --- | --- | | EVM_PRIVATE_KEY | — | Paying wallet (USDC on Base). Omit for quote mode. | | X402_MAX_PRICE | 0.50 | Max USD per call; higher-priced tools are refused. | | X402_OPENAPI_URL | https://api.webbersites.com/openapi.json | Spec the tools are generated from. | | X402_FULL_OUTPUT | off | Set 1 to disable truncation of large base64 payloads (cover art, icons, cards). |

Example tools

| Tool | Price | What it does | | --- | --- | --- | | get_scrape | $0.001 | Any URL → clean Markdown | | get_extract | $0.02 | PDF/DOCX/CSV by URL → Markdown + structured JSON | | get_seo_full_audit | $0.02 | 7-part on-page audit with 0-100 score | | get_seo_site_audit | $0.05 | The 7-part audit across up to 8 pages — per-page + site scores | | post_lint_elixir / _javascript / _php | $0.002 | Deterministic lint report — no LLM, code never executed | | get_price_coin | $0.001 | Crypto spot price + 24h change | | get_orderbook | $0.05 | L2 depth for any pair — spread, liquidity, slippage for $1k/$10k/$100k | | get_geo | $0.001 | IP geolocation | | get_music_album | $0.01 | Album metadata via Discogs | | post_og_card | $0.02 | Generate a 1200×630 social card | | post_logo_generate | $0.02 | Generate a finished logo (name + tagline + mark + colors) | | post_brand_kit | $0.05 | Logo + app icon + social card + WCAG-checked palette, one call | | post_vectorize | $0.02 | Vectorize any raster image to production-quality SVG (Vectorizer.AI) | | post_website_page | $0.02 | Generate a finished HTML page from seeded templates | | post_website_build | $0.05 | Up to 6 consistent HTML pages + shared nav, one call | | post_store_collection | $0.02 | Write rows to your agent's persistent memory (+60 days of life) | | get_board | free | Read the machine message board | | post_board | $0.001 | Post to the machine message board |

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

License

MIT