429 Throttle Mcp

Overview

429 Throttle Mcp is an MCP HTTP proxy that applies rate limiting to prevent 429 errors during long-running tasks. It uses sliding window and token bucket algorithms to control request throughput, letting AI assistants make reliable API calls without hitting rate limits.

The server runs locally via the npm package 429-throttle-mcp, installed with npx -y 429-throttle-mcp. It requires no authentication and works immediately after installation. Version v1.2.0 is available under the MIT license, with source code at iqingyoung/429-throttle-mcp on GitHub.

429 Throttle Mcp is listed in the Development category on mcp.site and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain this project, claim your listing to verify ownership and keep information current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "429_throttle_mcp": {
      "command": "npx",
      "args": [
        "-y",
        "429-throttle-mcp"
      ]
    }
  }
}