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validation-first

90 / 100 · Low risk

Fine to try.

By hashgraph-online/awesome-codex-plugins (GitHub) · design · 1,563 stars · scanned at commit 6d2e63f

Validation-first design for AI agent output — every spec requirement must be automatically verifiable. Covers the 6-gate validation pipeline, phase gates between Hunt phases, merge protocol, completion signals, and acceptance criteria design patterns. Trigger phrases: "validation gates", "quality gates", "validation-first design", "how to validate agent output", "acceptance criteria design"

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'validation-first' ] || [ -L ~/.agents/skills/'validation-first' ]; then echo 'A skill folder named validation-first already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/hashgraph-online/awesome-codex-plugins' "$d" && git -C "$d" checkout --quiet '6d2e63f73f845eb5dd94c1debba627d4b6e32fba' -- 'plugins/JuliusBrussee/blueprint/skills/validation-first' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/JuliusBrussee/blueprint/skills/validation-first' ~/.agents/skills/'validation-first' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'validation-first' ~/.claude/skills/'validation-first' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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