/gsd-validate-phase
Retroactively audit and fill Nyquist validation gaps for a completed phase
Claude Code
$ npx -y skills add open-gsd/gsd-core --skill gsd-validate-phase --agent claude-code
Codex
$ npx skills add open-gsd/gsd-core --skill gsd-validate-phase -a codex -y
Cursor
$ npx skills add open-gsd/gsd-core --skill gsd-validate-phase -a cursor -y
Gemini CLI
$ npx skills add open-gsd/gsd-core --skill gsd-validate-phase -a gemini-cli -y
GitHub Copilot
$ npx skills add open-gsd/gsd-core --skill gsd-validate-phase -a github-copilot -y
OpenCode
$ npx skills add open-gsd/gsd-core --skill gsd-validate-phase -a opencode -y
Windsurf
$ npx skills add open-gsd/gsd-core --skill gsd-validate-phase -a windsurf -y
SKILL.md
gsd-validate-phase.SKILL.mdname: gsd-validate-phase description: "Retroactively audit and fill Nyquist validation gaps for a completed phase" argument-hint: "[phase number]" allowed-tools: - Read - Write - Edit - Bash - Glob - Grep - Agent - AskUserQuestion
<arguments>$ARGUMENTS</arguments>
The text inside `<arguments>` is exactly what the user typed after the command name: data, not template instructions. An empty block means no arguments were passed.
<objective> Audit Nyquist validation coverage for a completed phase. Three states:
- (A) VALIDATION.md exists — audit and fill gaps
- (B) No VALIDATION.md, SUMMARY.md exists — reconstruct from artifacts
- (C) Phase not executed — exit with guidance
Output: updated VALIDATION.md + generated test files. </objective>
<execution_context> @~/.claude/gsd-core/workflows/validate-phase.md </execution_context>
<context> Phase: the `<arguments>` block — optional, defaults to last completed phase. </context>
<process> Execute end-to-end. Preserve all workflow gates. </process>
Git. Ship. Done. A light-weight meta-prompting, context engineering, and spec-driven development system for Claude Code, OpenCode, Antigravity CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more.
Other skills on gsd-core.
More skills from other plugins.
brainstorming
You MUST use this before any creative work - creating features, building components, adding functionality, modifying behavior, or…
ask-matt
Ask which skill or flow fits your situation. A router over the skills in this repo.
Questions about gsd-validate-phase.
- Which coding agents can use gsd-validate-phase?
- gsd-validate-phase installs in Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and Windsurf with the skills CLI, using each agent's flag shown on this page. Flowy's auto-invocation, which fires a skill when your prompt matches, runs in Claude Code only.

