# Run the Meta Ad Library evaluator

Put this file, `meta-ad-library-cli.mjs` and `meta-ad-library-engine.mjs` in the same directory. Node 20 or newer is enough.

```bash
node meta-ad-library-cli.mjs meta-ad-library-worked-example.json
node meta-ad-library-cli.mjs meta-ad-library-worked-example.json --csv > brief.csv
node meta-ad-library-cli.mjs meta-ad-library-worked-example.json --markdown > brief.md
```

JSON is the reimportable worksheet format. CSV and Markdown are handoff exports. JSON preserves a missing displayed creative/text-use count as `null`; CSV and Markdown emit `NOT_DISPLAYED`. Numeric zero remains `0` in every format.