Voyager

A Voyager-inspired MCP server that enables coding agents to build and immediately use CLI tools without restarting sessions.

Features

• Single Tool: The tool exposes a single tool run_shell_command.
• Skill library: Agents can add new commands in ~/.config/voyager/bin/.
• Dynamic schema: The run_shell_command tool description can be configured from ~/.config/voyager/prompt.txt, and it also dynamically loads available executables in ~/.config/voyager/bin/.
• Configurable: Each executable can provide a .desc file, which will be included in the run_shell_command tool description.
• Secure Execution: Uses subprocess with argument lists to prevent shell injection.

Installation

# add it to claude code
claude mcp add voyager uvx voyager-mcp

# try it with mcp inspector
npx -y @modelcontextprotocol/inspector uvx voyager-mcp

LICENSE

MIT

Citation

@article{wang2023voyager,
  title   = {Voyager: An Open-Ended Embodied Agent with Large Language Models},
  author  = {Guanzhi Wang and Yuqi Xie and Yunfan Jiang and Ajay Mandlekar and Chaowei Xiao and Yuke Zhu and Linxi Fan and Anima Anandkumar},
  year    = {2023},
  journal = {arXiv preprint arXiv: Arxiv-2305.16291}
}