Install

install

Install claude-cobrain daemon and start it with python3 directly.

Language

Infer language from the user's message. If there is no context, default to English.

Options

• English (default)
• 中文简体
• 中文繁体
• 日本语
• 한국어
• Others (allow user to specify)

Source files

Find the plugin root directory. The plugin root directory is most likely in /.claude/plugins/.

Required source files:

• /scripts/cobrain.py - daemon script to copy
• /scripts/control.sh - process controller script

Execution principle

Minimize user approval prompts: chain independent shell commands with && into single Bash calls.

Flow

1. Choose output directory

• Default: ~/.claude/cobrain
• Allow custom absolute path if user asks.
• Resolve to absolute path and use it as OUTPUT_DIR.

2. Prerequisite check (one-shot, 1 Bash call)

Run all checks in a single command:

command -v python3 && python3 --version && \
command -v ollama && ollama --version && \
python3 -c "import PIL, ollama; print('ok')" && \
ollama list | grep qwen3-vl

If success: skip installation steps.

If failure: install only missing prerequisites.

• Missing Python 3: brew install python
• Missing Ollama CLI: brew install ollama
• Missing Python packages: pip3 install Pillow ollama
• Missing model: ollama pull qwen3-vl:2b

3. Deploy files (1 Bash call)

Chain file operations into one Bash call:

1. Create OUTPUT_DIR if needed.
2. Copy daemon script from /scripts/cobrain.py to /cobrain.py.
3. Copy controller script from /scripts/control.sh to /control.sh and chmod +x.
4. Write .source_repo marker to /.source_repo.
5. Remove stale pid file /cobrain.pid if it exists.

4. Start service (1 Bash call)

Run direct python3 start through the controller:

if [[ -n "${CLAUDE_PLUGIN_ROOT:-}" && -f "${CLAUDE_PLUGIN_ROOT}/scripts/control.sh" ]]; then
  CONTROL_SCRIPT="${CLAUDE_PLUGIN_ROOT}/scripts/control.sh"
elif [[ -f "./plugin/scripts/control.sh" ]]; then
  CONTROL_SCRIPT="./plugin/scripts/control.sh"
else
  CONTROL_SCRIPT="$(ls -dt "$HOME"/.claude/plugins/cache/*/claude-cobrain/*/scripts/control.sh 2>/dev/null | head -1)"
fi
[[ -n "${CONTROL_SCRIPT:-}" && -f "$CONTROL_SCRIPT" ]] || { echo "control.sh not found"; exit 1; }
bash "$CONTROL_SCRIPT" start

5. Completion output

Return:

• Done. Daemon is running. Logs:
• - /daemon.log
• - /runtime.stdout.log
• - /runtime.stderr.log
• macOS permission note below.

macOS Permissions

If logs show permission errors, add your terminal app to both permissions in:

• System Settings -> Privacy & Security -> Accessibility
• System Settings -> Privacy & Security -> Screen Recording

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: cyrus-cai
• Source: cyrus-cai/claude-cobrain
• License: MIT
• Homepage: https://claude-cobrain-web.vercel.app/

Install and usage instructions live in the source repository linked above.