Task Master Viewer
Visual GUI for managing Task Master tasks.json files.
When to Use
Use when:
- User asks to "view tasks visually", "open task editor", "launch GUI", or "see tasks in browser"
- User wants to edit multiple tasks without typing commands
- User needs to reorganize task hierarchy
- CLI/MCP tools feel cumbersome
Don't use when:
- User is comfortable with CLI (
task-master list, etc.) - User wants to script or automate tasks
- Headless/server environment without browser
Quick Start
1. Check Streamlit Installation
python -c "import streamlit" 2>/dev/null && echo "✓ Installed" || pip install -U streamlit
2. Launch Application
cd .claude/skills/task-master-viewer && streamlit run app.py
Output:
Local URL: http://localhost:8501
App opens automatically in user's browser.
3. Tell User
✓ Task Master editor is open at http://localhost:8501
To stop: Close browser tab and press Ctrl+C
Technical Details
File Location: .claude/skills/task-master-viewer/app.py
Dependencies: streamlit (only requirement)
Default Path: PROJECT_ROOT/.taskmaster/tasks/tasks.json
Port: 8501 (auto-increments if busy)
Theme: Snowflake brand colors in .streamlit/config.toml
Data Format: Standard Task Master JSON with tagged task lists
Stopping the App
Foreground (default):
# User presses Ctrl+C
Kill Process:
pkill -f "streamlit run"
Background (if needed):
cd .claude/skills/task-master-viewer
nohup streamlit run app.py > /dev/null 2>&1 &
echo $! > streamlit.pid
# To stop
kill $(cat streamlit.pid)
Common Issues
| Issue | Solution |
|---|---|
| "Address already in use" | pkill -f "streamlit run" then restart |
| "Module 'streamlit' not found" | pip install streamlit |
| Wrong directory error | Must run from .claude/skills/task-master-viewer/ |
| File not found | User sets path in sidebar settings |
Best Practices
Do:
- ✅ Check/install Streamlit before launching
- ✅ Run from skill directory
- ✅ Tell user the URL
- ✅ Explain how to stop
- ✅ Mention all instructions are in the app
Don't:
- ❌ Leave running indefinitely
- ❌ Launch multiple instances
- ❌ Edit tasks.json while app is open
- ❌ Explain features (app has help text)
Integration
Works alongside:
- Task Master CLI commands
- Task Master MCP tools
- Direct JSON editing (use "🔄 Reload" button)
Example Response
User: "Can I see my tasks visually?"
Agent:
Installing Streamlit... ✓
Launching Task Master editor... ✓
Editor is open at http://localhost:8501
All instructions are in the app interface.
To stop: Close browser tab and press Ctrl+C.
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