Phase Gated Debugging
sickn33/agentic-awesome-skills
A skill your agent uses when debugging any bug. An agent skill from sickn33/agentic-awesome-skills.
Enforces strict waterfall development workflow with phase gates.
No licenceAuto-check passed
Install Waterfall Development
$ npx skills add aiskillstore/marketplace --skill waterfall-development -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace waterfall-development --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/chemiseblanc/waterfall-development .claude/skills/waterfall-development && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "waterfall-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/chemiseblanc/waterfall-development into .claude/skills/waterfall-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "waterfall-development", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/chemiseblanc/waterfall-developmentType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill waterfall-development -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace waterfall-development --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/chemiseblanc/waterfall-development .agents/skills/waterfall-development && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "waterfall-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/chemiseblanc/waterfall-development into .agents/skills/waterfall-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "waterfall-development", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill waterfall-development -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace waterfall-development --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/chemiseblanc/waterfall-development .cursor/skills/waterfall-development && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "waterfall-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/chemiseblanc/waterfall-development into .cursor/skills/waterfall-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "waterfall-development", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/chemiseblanc/waterfall-development--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill waterfall-development -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace waterfall-development --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/chemiseblanc/waterfall-development .gemini/skills/waterfall-development && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "waterfall-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/chemiseblanc/waterfall-development into .gemini/skills/waterfall-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "waterfall-development", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace waterfall-developmentInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill waterfall-development -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/chemiseblanc/waterfall-development .github/skills/waterfall-development && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "waterfall-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/chemiseblanc/waterfall-development into .github/skills/waterfall-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "waterfall-development", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill waterfall-development -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace waterfall-development --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/chemiseblanc/waterfall-development .opencode/skills/waterfall-development && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "waterfall-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/chemiseblanc/waterfall-development into .opencode/skills/waterfall-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "waterfall-development", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
waterfall-development- GitHub stars
- 430
- Token cost
- ~467 tokens
- SKILL.md length
- 177 words
- Files
- 5 (incl. scripts, references)
- Skills in repo
- 1,108
- Repo updated
- First seen
- Licence
- None found
At a glance
Enforces strict waterfall development workflow with phase gates.
- Works in 5 steps: Run ./scripts/validate-gates.py → If errors: Print errors, STOP → Identify target feature and current phase → …
- Features.yml exists in project root
- SKILL.md covers Phases, Activation, Workflow and Gates, plus 2 more sections
- Runs Python scripts from its folder
What it does
Waterfall Development is an agent skill from aiskillstore/marketplace. Enforces strict waterfall development workflow with phase gates. Use when (1) features.yml exists in project root, (2) user asks to implement/develop/build a feature, (3) user explicitly requests waterfall workflow. Creates features.yml if missing when invoked.
Its SKILL.md is about 470 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts and reference files (for example `references/blueprint-format.md`, `references/phase-gates.md` and `scripts/validate-gates.py`).
The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Features.yml exists in project root
- User asks to implement/develop/build a feature
- User explicitly requests waterfall workflow
Example prompts
- “Use the waterfall-development skill to enforce strict waterfall development workflow with phase gates”
- “/waterfall-development”
Requirements
- Python 3
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Run ./scripts/validate-gates.py
- If errors: Print errors, STOP
- Identify target feature and current phase
- Block work that doesn't match current phase
- Before phase transitions: Re-validate target phase gates
What it can do on your machine
Read from SKILL.md and the folder at commit ad8daf7. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Waterfall Development loads about 467 tokens when it runs, and up to ~1.4k if it reads all its reference files. Until then it costs about 71 tokens; SKILL.md has 177 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 177 words (~467 tokens).
“Strict phase gate enforcement for waterfall workflow. Requires the feature-file skill for artifact management.”
- name
- waterfall-development
Files
SKILL.md and 4 other files (scripts, references) in skills/chemiseblanc/waterfall-development of aiskillstore/marketplace.
- SKILL.md
- references/blueprint-format.md
- references/phase-gates.md
- scripts/validate-gates.py
- skill-report.json
Open the folder on GitHubat commit ad8daf7
Compare with similar skills
Waterfall Development next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Waterfall Development this skillaiskillstore/marketplace | 430 | — | ~467 | Automated safety check: Pass | None | |
| Phase Gated Debuggingsickn33/agentic-awesome-skills | 47k | 2 repos | ~790 | Automated safety check: Pass | MIT | |
| Phase Gate CheckDonchitos/Claude-Code-Game-Studios | 26k | — | ~13k | Automated safety check: Notes | MIT | |
| Gate Testsvercel/next.js | 143k | — | ~2.7k | Automated safety check: Pass | MIT | |
| Gateplugin87/ux-ui-agent-skills | 1.5k | — | ~532 | Automated safety check: Pass | MIT | |
| Phase EnforcementMadAppGang/claude-code | 284 | — | ~3.4k | Automated safety check: Pass | MIT |
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Questions about Waterfall Development
What does Waterfall Development do?
Enforces strict waterfall development workflow with phase gates. Waterfall Development is an agent skill from aiskillstore/marketplace. Enforces strict waterfall development workflow with phase gates.
When should I use Waterfall Development?
Waterfall Development fits situations like: features.yml exists in project root; user asks to implement/develop/build a feature; user explicitly requests waterfall workflow.
How do I install Waterfall Development in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill waterfall-development -a claude-code`. Or copy the skill folder (skills/chemiseblanc/waterfall-development in aiskillstore/marketplace) into .claude/skills/waterfall-development in your project. Claude Code loads it when a task matches its description.
How do I install Waterfall Development in Codex?
Run `npx skills add aiskillstore/marketplace --skill waterfall-development -a codex`. Or copy the skill folder (skills/chemiseblanc/waterfall-development in aiskillstore/marketplace) into .agents/skills/waterfall-development in your project. Codex loads it when a task matches its description.
Can I use Waterfall Development in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill waterfall-development -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/waterfall-development, .gemini/skills/waterfall-development, .github/skills/waterfall-development and .opencode/skills/waterfall-development in your project.
What does Waterfall Development need to run?
Going by SKILL.md and its folder, Waterfall Development needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Waterfall Development access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Waterfall Development safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Waterfall Development use?
No licence was found for Waterfall Development or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Waterfall Development use?
About 467 tokens (SKILL.md is roughly 1.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 928 tokens, read only when the agent opens those files.
What are the alternatives to Waterfall Development?
Skills that share tags, products or a category with Waterfall Development: Phase Gated Debugging (sickn33/agentic-awesome-skills, 47k stars), Phase Gate Check (Donchitos/Claude-Code-Game-Studios, 26k stars), Gate Tests (vercel/next.js, 143k stars) and Gate (plugin87/ux-ui-agent-skills, 1.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Waterfall Development?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,108 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.