Rule34 MCP Server: Install & Setup

Install Rule34 in Claude Code

npm

Claude Code

claude mcp add rule34 -e RULE34_USER_ID=... -e RULE34_API_KEY=... -- npx -y mcp-rule34

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "rule34": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-rule34"
      ],
      "env": {
        "RULE34_USER_ID": "...",
        "RULE34_API_KEY": "..."
      }
    }
  }
}

MCP Bundle (.mcpb)

Claude Code

curl -LO https://github.com/smeet666/mcp-rule34/releases/download/v2.1.0/mcp-rule34-2.1.0.mcpb

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

Download mcp-rule34-2.1.0.mcpb and double-click it to install in Claude Desktop.

MCP Bundles install in one click in Claude Desktop. Download the file, then open it.

Replace each ... with your own value.

Frequently asked questions

What does the Rule34 MCP server do?

Search rule34.xxx posts by tag through the site's own API. Needs a rule34.xxx API key.

Is the Rule34 MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Rule34 run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Rule34 to Claude Code?

Run: claude mcp add rule34 -e RULE34_USER_ID=... -e RULE34_API_KEY=... -- npx -y mcp-rule34

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