Claude Code、Claude Desktop、Cursor、その他のMCPクライアント向けWeb検索MCPサーバー

import os

import httpx
from mcp.server.fastmcp import FastMCP

BASE = "https://llmwebsearch.com/api/v1"
HEADERS = {"Authorization": "Bearer " + os.environ["LLMWEBSEARCH_API_KEY"]}
mcp = FastMCP("llmwebsearch")


def _call(path: str, body: dict) -> dict:
    resp = httpx.post(BASE + path, json=body, headers=HEADERS, timeout=90)
    data = resp.json()
    if resp.status_code != 200:
        err = data.get("error", {})
        raise RuntimeError(err.get("code", str(resp.status_code)) + ": " + err.get("message", ""))
    return data


def _page(n: int, item: dict) -> str:
    head = f"[{n}] {item.get('title') or item['url']}\n{item['url']}\n"
    if item.get("content_status") == "ok":
        return head + item["content"]
    return head + "(not read: " + item.get("content_status", "unknown") + ") " + item.get("snippet", "")


@mcp.tool()
def search_web(query: str, max_results: int = 5, read: int = 3) -> str:
    """Search the live web and return numbered sources; the first `read` pages include their text.

    Use it for current facts, documentation and news. Cite sources by their number.
    """
    body = {"q": query, "max_results": max(1, min(max_results, 20)), "read": max(0, min(read, 10)), "max_chars": 5000}
    data = _call("/search", body)
    return "\n\n".join(_page(i, r) for i, r in enumerate(data["results"], start=1))


@mcp.tool()
def read_urls(urls: list[str]) -> str:
    """Read 1 to 20 public web pages whose URLs you already have and return their main text."""
    data = _call("/extract", {"urls": urls[:20], "max_chars": 12000})
    return "\n\n".join(_page(i, r) for i, r in enumerate(data["results"], start=1))


if __name__ == "__main__":
    mcp.run()

python -m venv .venv
. .venv/bin/activate
pip install "mcp[cli]" httpx
LLMWEBSEARCH_API_KEY="your-key" python llmwebsearch_mcp.py

claude mcp add --env LLMWEBSEARCH_API_KEY=your-key --transport stdio --scope user llmwebsearch \
  -- /home/you/llmwebsearch/.venv/bin/python /home/you/llmwebsearch/llmwebsearch_mcp.py

{
  "mcpServers": {
    "llmwebsearch": {
      "command": "/home/you/llmwebsearch/.venv/bin/python",
      "args": ["/home/you/llmwebsearch/llmwebsearch_mcp.py"],
      "env": { "LLMWEBSEARCH_API_KEY": "your-key" }
    }
  }
}