/gsd-secure-phase
Retroactively verify threat mitigations for a completed phase
$ npx -y skills add open-gsd/gsd-core --skill gsd-secure-phase --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.Auto-invocation is when the right skill fires by itself at the right moment, driven by a FLOW.md router and a hook, instead of you invoking it by name. It is the difference between a skill being installed and a skill actually getting used.Read the full definition →
- You can call itInvoke it directly when you want it.
- Slash command
/gsd-secure-phase
Context preview
The summary Claude sees to decide when to auto-load this skill.
Retroactively verify threat mitigations for a completed phase
SKILL.md
gsd-secure-phase.SKILL.mdname: gsd-secure-phase description: "Retroactively verify threat mitigations for a completed phase" argument-hint: "[phase number]" allowed-tools: - Read - Write - Edit - Bash - Glob - Grep - Agent - AskUserQuestion
<objective> Verify threat mitigations for a completed phase. Three states:
- (A) SECURITY.md exists — audit and verify mitigations
- (B) No SECURITY.md, PLAN.md with threat model exists — run from artifacts
- (C) Phase not executed — exit with guidance
Output: updated SECURITY.md. </objective>
<execution_context> @~/.claude/gsd-core/workflows/secure-phase.md </execution_context>
<context> Phase: $ARGUMENTS — 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.
Repo: open-gsd/gsd-core
Other skills on gsd-core.
- /gsd-add-tests
Generate tests for a completed phase based on UAT criteria and implementation
Open skill - /gsd-ai-integration-phase
Generate an AI-SPEC.md design contract for phases that involve building AI systems.
Open skill - /gsd-audit-fix
Autonomous audit-to-fix pipeline — find issues, classify, fix, test, commit
Open skill - /gsd-audit-milestone
Audit milestone completion against original intent before archiving
Open skill - /gsd-audit-uat
Cross-phase audit of all outstanding UAT and verification items
Open skill - /gsd-autonomous
Run all remaining phases autonomously — discuss→plan→execute per phase
Open skill

