xmlriver-mcp

MCP server for XMLRiver — Google/Yandex SERP parsing and Yandex Wordstat keyword frequency data via XML API.

mcp-name: io.github.artgas1/xmlriver-mcp

What it does

Gives Claude / Cursor / Windsurf direct access to:

• Google SERP parsing (organic, ads, FAQ, knowledge graph, AI Overview) for any country / region / device
• Yandex SERP parsing (Russian-speaking markets — primary use case)
• Yandex Wordstat keyword frequency, history, similar queries (Yandex's keyword volume tool)
• Indexing check — is this URL in Google/Yandex index?
• Account ops — balance, tariff, cost per 1k requests

First MCP for XMLRiver — fills a gap for Russian SEO research and Yandex-aware analysis. Pay-as-you-go (~25 ₽ / 1000 requests on Basic tariff).

Quickstart

uvx xmlriver-mcp

Configuration

Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "xmlriver": {
      "command": "uvx",
      "args": ["xmlriver-mcp"],
      "env": {
        "XMLRIVER_USER": "<your_numeric_user_id>",
        "XMLRIVER_KEY": "<your_40_char_hex_key>"
      }
    }
  }
}

Claude Code

Add to project .mcp.json:

{
  "mcpServers": {
    "xmlriver": {
      "command": "uvx",
      "args": ["xmlriver-mcp"],
      "env": {
        "XMLRIVER_USER": "<your_numeric_user_id>",
        "XMLRIVER_KEY": "<your_40_char_hex_key>"
      }
    }
  }
}

Cursor

Edit ~/.cursor/mcp.json (global) or .cursor/mcp.json (project):

{
  "mcpServers": {
    "xmlriver": {
      "command": "uvx",
      "args": ["xmlriver-mcp"],
      "env": {
        "XMLRIVER_USER": "<your_numeric_user_id>",
        "XMLRIVER_KEY": "<your_40_char_hex_key>"
      }
    }
  }
}

Tools

All tools are read-only (annotated with readOnlyHint: true). No destructive operations.

Authentication

1. Register at https://xmlriver.com
2. Top up balance (minimum ~100 ₽ to start)
3. Get your user (numeric ID) and key (40-char hex) from the dashboard
4. Set XMLRIVER_USER and XMLRIVER_KEY env vars in your MCP client config

Security note: XMLRiver API is HTTP-only (not HTTPS). The key is rotatable from the dashboard if compromised.

Pricing context

Use get_balance and get_cost to monitor spend before bulk operations.

Common use cases

• SEO position tracking — yandex_search(query="...", region=213) for own/competitor ranking
• Keyword research — wordstat_query(query="купить iphone", history_period="monthly") for demand validation + seasonality
• Featured snippet hunting — google_search(additional_blocks="faqsnippet,knowledge_graph,zeroposition") to see what owns the answer box
• Indexation monitoring — check_url_indexed(url="https://your-site.com/new-page") after publishing
• Cross-region comparison — same query, different region/country for Yandex/Google to see geographic variance

Local development

git clone https://github.com/artgas1/xmlriver-mcp
cd xmlriver-mcp
uv sync --all-extras

# Run unit tests (no API key needed)
uv run pytest tests/unit -v

# Run integration tests (requires XMLRIVER_USER / XMLRIVER_KEY)
XMLRIVER_USER=... XMLRIVER_KEY=... uv run pytest tests/integration -v -m integration

# MCP Inspector — interactive
XMLRIVER_USER=... XMLRIVER_KEY=... npx @modelcontextprotocol/inspector uv run python -m xmlriver_mcp.server

# MCP Inspector — CLI smoke test (list tools)
npx @modelcontextprotocol/inspector --cli "uv run python -m xmlriver_mcp.server" --method tools/list

Architecture

• Stack: Python 3.10+ / FastMCP / httpx / tenacity / pydantic
• Transport: stdio (default)
• No external SDK dependency — direct REST via httpx + custom XML parser
• Retry strategy: 3 attempts with exponential backoff on network errors (not on HTTP 4xx)
• Logging: stderr only (stdio protocol requires stdout for JSON-RPC)

Built with /mcp-development

This MCP server was written using NeiroOwl's /mcp-development skill — comprehensive guide for building MCP servers in 2026 (MCP spec 2025-11-25). The skill codifies:

• Tool design (granular vs unified, 3-part descriptions, schemas, annotations)
• Anti-patterns (top 20)
• Security model (9 attack classes + defense-in-depth)
• Distribution (PyPI/npm + registries)

If you're building your own MCP — check it out.

License

MIT

Contributing

PRs welcome. Open an issue first for substantial changes.

Acknowledgements

• XMLRiver — for the underlying API
• Anthropic MCP — for the protocol
• brightdata-mcp-full — patterns reference (NeiroOwl team)