Files
pm-claude-skills/evals/README.md
T
mohitagw15856 edb663ad72 CI workflow to run evals and update the leaderboard (#43)
Lets the leaderboard show real numbers without a local key: the new
"Update Skill Leaderboard" workflow (workflow_dispatch) runs the eval harness
with the ANTHROPIC_API_KEY secret, commits evals/results.json, and the Pages
deploy re-renders the public leaderboard with real data.

- .github/workflows/eval-leaderboard.yml: manual trigger, contents: write,
  runs run-evals.mjs + build-leaderboard.mjs, commits results.json.
- deploy-playground.yml: also trigger on evals/results.json (and the build
  scripts) so the committed results refresh the live page.
- evals/README + CHANGELOG document the CI route.


Claude-Session: https://claude.ai/code/session_016JWn5jRD5tcEFKrubjQ6Px

Co-authored-by: Claude <noreply@anthropic.com>
2026-06-18 12:58:45 +01:00

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# Skill Evals
An LLM-as-judge harness that scores skill output quality across models — so claims like
"production-ready" are backed by numbers, not vibes. Results render as a public
[Skill Leaderboard](https://mohitagw15856.github.io/pm-claude-skills/leaderboard.html).
## What it measures
For each [case](cases.json), a model runs the skill, then a **judge model** scores the
output 15 on four dimensions:
- **structure** — follows a clear, expected structure
- **completeness** — covers what the task needs
- **usefulness** — specific and actually useful, not generic
- **grounding** — stays grounded in the input, no invented facts
## Run it
Needs an Anthropic API key (this calls the API and costs tokens):
```bash
ANTHROPIC_API_KEY=sk-ant-... node evals/run-evals.mjs
# --models claude-opus-4-8,claude-sonnet-4-6,claude-haiku-4-5-20251001
# --judge claude-opus-4-8
node scripts/build-leaderboard.mjs # render web/leaderboard.html
```
`run-evals.mjs` writes `evals/results.json`; the leaderboard builder prefers it and falls
back to `results.example.json` (clearly labelled) so the page renders before you run real evals.
### No local key? Run it in CI
Add an `ANTHROPIC_API_KEY` repo secret, then go to **Actions → "Update Skill Leaderboard"
→ Run workflow**. It runs the evals, commits `evals/results.json`, and the Pages deploy
re-renders the public leaderboard with real numbers — no laptop required.
## Add a case
Append to [`cases.json`](cases.json): `{ "skill": "<name>", "input": "<a realistic prompt>" }`.
Keep inputs short but representative of how the skill is actually used.
## Honesty notes
- Scores are an LLM judge's opinion, not ground truth — treat them as a comparative signal.
- The judge sees the skill's stated purpose and the output, not the model name (reduces bias).
- Re-run after model upgrades; numbers drift.