Overview
mass-ulw is an open-source workflow skill for Claude Code and compatible agents, published by code-yeongyu. Its author describes it as: “Drives dependency-ordered child work through the native workflow tool, one run per phase with retry/amend/send recovery. Use when the user asks for mass-ulw, a DAG of tasks, or fan-out work where some tasks must wait…”. The project has 69k stars on GitHub and ships custom license terms, so review them before reuse. Add it to your setup with `git clone https://github.com/code-yeongyu/oh-my-openagent ~/.claude/skills/mass-ulw`.
What mass-ulw does
Use this skill when the user asks for `mass-ulw`, a task DAG, staged fan-out, or any multi-agent job where real dependencies exist: task C needs A and B finished first. For fully independent workers, plain parallel `task` spawns are simpler. Reach for `workflow` when the ordering itself is the point. A run covers ONE phase's dependency-ordered lanes and NEVER a whole multi-phase job; define the next phase as a NEW run (or `amend` when only the definition changed) in the cell from what the settled run proved. Under `ulw-loop` or `ulw-execute`, that contract owns the goal, criteria, evidence, an…
What’s inside
The SKILL.md for mass-ulw is organised into these sections:
- Planning - MANDATORY first step
- The shape
- Goal before start
- Running a dag - eval is the default
- Run lifecycle
- Recovering one node - retry, send, amend
- Resume across a restart
- Supervising a run
Installation
Add mass-ulw to your agent with:
git clone https://github.com/code-yeongyu/oh-my-openagent ~/.claude/skills/mass-ulwReview a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.
Supported agents
- Codex — declared in the repository topics
- Cursor — declared in the repository topics
- OpenCode — declared in the repository topics
License
code-yeongyu has not declared a standard open-source license for this repository (Other). Confirm the terms with the author before reusing it.
Strengths
- Ships in code-yeongyu/oh-my-openagent, an established project with 69,248 GitHub stars
- Works with Codex, Cursor, OpenCode
- Actively maintained — repository updated in the last 30 days
- Its repository gained 1,266 GitHub stars over the last 35 days
Things to check
- No license declared — confirm terms with the author before reuse
Author
Topics
Frequently asked questions
- What does mass-ulw do?
- Drives dependency-ordered child work through the native workflow tool, one run per phase with retry/amend/send recovery. Use when the user asks for mass-ulw, a DAG of tasks, or fan-out work where some tasks must wait on others.
- How do I install mass-ulw?
- Run git clone https://github.com/code-yeongyu/oh-my-openagent ~/.claude/skills/mass-ulw in your agent, then reload your skills. Review the source at https://github.com/code-yeongyu/oh-my-openagent before installing.
- Is mass-ulw free to use?
- mass-ulw is publicly available on GitHub, but code-yeongyu has not declared a standard open-source license (Other). Confirm the terms with the author before reusing it.
- Which agents does mass-ulw work with?
- mass-ulw lists Codex, Cursor, and OpenCode — named in its SKILL.md, its plugin marketplace or its repository topics. Skills use the portable SKILL.md format, so other agents that read that format may load it too.
- Where does mass-ulw come from?
- mass-ulw ships inside code-yeongyu/oh-my-openagent, a repository that contains 49 catalogued skills in total. The repository's 69,248 GitHub stars apply to that whole collection, not to this skill on its own.