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llmtrim

llmtrim is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. MCP server and proxy that compresses LLM prompts, tool output, and replies to cut token cost. It has 257 GitHub stars, is released under the MPL-2.0 license and runs locally with npx -y @llmtrim/cli.

github.com/fkiene/llmtrim (opens in a new tab)

Data as of from the GitHub API and the official MCP registry; description from the project's repository. Report an error

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Install llmtrim

Generated from the server's MCP registry entry. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "llmtrim": {
      "command": "npx",
      "args": [
        "-y",
        "@llmtrim/cli"
      ]
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --transport stdio llmtrim -- npx -y @llmtrim/cli

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "llmtrim": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@llmtrim/cli"
      ]
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "servers": {
    "llmtrim": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@llmtrim/cli"
      ]
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

About llmtrim

Local proxy that compresses LLM API traffic so you pay less. Same answers, smaller bill. −31% input · −74% output · −66% round-trip cost · 112 live A/B cases · ~5 ms/call · no model to load

  • agentic-coding
  • ai
  • anthropic
  • claude-code
  • cost-reduction
  • developer-tools
  • llm
  • llmops
  • mitm-proxy
  • openai

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FAQ

llmtrim FAQ

Still curious? Email info@appsgit.com.

How do I install the llmtrim MCP server?

Add the command npx -y @llmtrim/cli to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is llmtrim free?

The server is open source under the MPL-2.0 license, so running it is free. It does not declare any required API key.

Is llmtrim actively maintained?

The most recent commit was on Sep 29, 2026. The latest release is v0.13.7, published Sep 16, 2026. appsgit only lists MCP servers with a commit in the last six months.