Parallel execution engine for high-throughput task completion
View on GitHubFebruary 4, 2026
Select agents to install to:
npx add-skill https://github.com/Yeachan-Heo/oh-my-claudecode/blob/main/skills/ultrawork/SKILL.md -a claude-code --skill ultraworkInstallation paths:
.claude/skills/ultrawork/# Ultrawork Skill
Parallel execution engine. This is a **COMPONENT**, not a standalone persistence mode.
## What Ultrawork Provides
1. **Parallel Execution**: Running multiple agents simultaneously for independent tasks
2. **Background Operations**: Using `run_in_background: true` for long operations
3. **Smart Model Routing**: Using tiered agents to save tokens
## What Ultrawork Does NOT Provide
- **Persistence**: Use `ralph` for "don't stop until done" behavior
- **Verification Loop**: Use `ralph` for mandatory architect verification
- **State Management**: Use `ralph` or `autopilot` for session persistence
## Usage
Ultrawork is automatically activated by:
- `ralph` (for persistent parallel work)
- `autopilot` (for autonomous parallel work)
- Direct invocation when you want parallel-only execution with manual oversight
## Smart Model Routing
**FIRST ACTION:** Before delegating any work, read the agent reference file:
```
Read file: docs/shared/agent-tiers.md
```
This provides the complete agent tier matrix, MCP tool assignments, and selection guidance.
**CRITICAL: Always pass `model` parameter explicitly!**
```
Task(subagent_type="oh-my-claudecode:architect-low", model="haiku", prompt="...")
Task(subagent_type="oh-my-claudecode:executor", model="sonnet", prompt="...")
Task(subagent_type="oh-my-claudecode:architect", model="opus", prompt="...")
```
## Background Execution Rules
**Run in Background** (set `run_in_background: true`):
- Package installation (npm install, pip install, cargo build, etc.)
- Build processes (project build command, make, etc.)
- Test suites (project test command, etc.)
**Run Blocking** (foreground):
- Quick status checks: git status, ls, pwd
- File reads, edits
- Simple commands
## Relationship to Other Modes
```
ralph (persistence wrapper)
└── includes: ultrawork (this skill)
└── provides: parallel execution only
autopilot (autonomous execution)
└── includes: ralph
└── includes: ultrawork (this skill)
ecomode (to