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Install Claude Code

npm install -g @anthropic-ai/claude-code

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Add MCP Configuration

cd /path/to/repository
claude mcp add container-use -- <full path to cu command> stdio

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Add Agent Rules (Optional)

Save the CLAUDE.md file at the root of your repository: 
curl https://raw.githubusercontent.com/dagger/container-use/main/rules/agent.md >> CLAUDE.md

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Trust Only Container Use Tools (Optional)

For maximum security, restrict Claude Code to only use Container Use tools: 
claude --allowedTools mcp__container-use__environment_checkpoint,mcp__container-use__environment_create,mcp__container-use__environment_add_service,mcp__container-use__environment_file_delete,mcp__container-use__environment_file_list,mcp__container-use__environment_file_read,mcp__container-use__environment_file_write,mcp__container-use__environment_open,mcp__container-use__environment_run_cmd,mcp__container-use__environment_update
Learn more: Claude Code MCP Documentation

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Verification

After setting up Claude Code, verify Container Use is working:
  1. Check MCP Connection: Claude Code should recognize Container Use tools
  2. Test Environment Creation: Ask Claude Code to create a new environment
  3. Verify Isolation: Multiple environments should work independently

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Troubleshooting

  • Verify the cu command is in your PATH: which cu
  • Check MCP configuration syntax
  • Restart Claude Code after configuration changes
  • Ensure Docker is running and accessible
  • Check file permissions for configuration files
  • Verify cu stdio command works: echo '{}' | cu stdio
  • Check your Claude Code MCP server logs
  • Verify Container Use tools are enabled in settings

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Next Steps

Back to Quickstart

Return to the quickstart guide to create your first environment

Join Community

Get help and share experiences in #container-use
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