Token Lens

Overview

Token Lens is a Model Context Protocol server that counts and cuts tokens in prompts, chats, and agents for any model. It runs entirely locally and collects no data, giving you transparent control over token usage across your AI workflows. Any MCP-compatible AI assistant can call Token Lens tools directly, letting the model decide when to apply token counting and management in conversations or agent runs.

The server runs locally as an npm package. Install it with npx -y @kunal_dutt/token-lens. No authentication or credentials are required — it works immediately out of the box. The latest release is v0.2.37.

Token Lens belongs in the AI & Agents category on mcp.site and works with all MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and others. If you maintain Token Lens, claim this listing to verify ownership, earn the Verified badge, and keep your details current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "token_lens": {
      "command": "npx",
      "args": [
        "-y",
        "@kunal_dutt/token-lens"
      ]
    }
  }
}