llm-tools-mcp 0.3

MCP support for LLM CLI

llm-tools-mcp

Connect to MCP servers right from your shell. Plugin for llm (by @simonw).

[!Note] Current focus: Authorization #4

Installation

Install this plugin in the same environment as LLM:

llm install llm-tools-mcp

Usage

[!WARNING] It's recommended to use the --ta flag and approve each tool execution.

1. Create mcp.json file in ~/.llm-tools-mcp.

   Example file:

   {
     "mcpServers": {
       "filesystem": {
         "command": "npx",
         "args": [
           "-y",
           "@modelcontextprotocol/server-filesystem",
           "~/demo"
         ]
       }
     }
   }
   

2. List available tools.

   llm tools list
   

3. Run llm with tools.

   llm --ta -T MCP "what files are in the demo directory? show me contents of one of the files (any)"
   

Other examples

Dynamically change your MCP config:

llm --ta -T 'MCP("/path/to/custom/mcp.json")' "your prompt here"

Development

Now (to be verified)

• Sync dependencies: uv sync --all-extras
• Run linters / type checker: ./check.sh
• Run tests: ./test.sh

Before

To set up this plugin locally, first checkout the code. Then create a new virtual environment:

cd llm-tools-mcp
python -m venv venv
source venv/bin/activate

Now install the dependencies and test dependencies:

python -m pip install -e '.[test]'

To run the tests:

python -m pytest

To Do

• Release alpha version
• support all transports
  • streamable http
  • sse
  • stdio
• Build a solid test suite
  • test config file validation
  • test sse with dummy server
  • test stdio with dummy server
  • test http streamable with dummy server (see #1)
  • manual test for sse with real server
  • manual test for stdio with real server
  • manual test for http streamable with real server
• Redirect stdout/stderr from the MCP SDK to a file or designated location
• Reuse stdio connections
• Support non-stdio MCP servers
• Handle tool name conflicts (prefix with mcp server name?)
• Gather feedback on the ~/.llm-tools-mcp directory naming
• Improve failure handling:
  • When connecting to an MCP server fails
  • When mcp.json is malformed
• Improve this README:
  • Add more detail in the Development section (mention uv?)