"grad-did"
100 / 100 · Low risk
Fine to try.
"Apply Difference-in-Differences (DID) to estimate causal treatment effects by comparing changes in outcomes between treatment and control groups. Use this skill when the user evaluates policy interventions, natural experiments, or regulatory changes, needs to test parallel trends, or when they ask 'did this policy work', 'how do I identify causal effects without randomization', or 'what is the treatment effect'.".
What this skill can do
We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'grad-did' ] || [ -L ~/.agents/skills/'grad-did' ]; then echo 'A skill folder named grad-did already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/charlieviettq/awesome-agent-skill' "$d" && git -C "$d" checkout --quiet 'c567ae426d55fa498e919fc0f5a37c582d5c7a2c' -- '.claude/skills/grad-did' && mkdir -p ~/.agents/skills && cp -R "$d"/'.claude/skills/grad-did' ~/.agents/skills/'grad-did' && 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/'grad-did' ~/.claude/skills/'grad-did' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
[](https://zalavijaysinh.github.io/skilltrust/repos/charlieviettq/awesome-agent-skill/)
Score history
| Date | Version | Score |
|---|---|---|
| 2026-11-07 | c567ae4 | 100 |