# Mart Author

> Author a new medallion node (gold mart, silver dim, or additive column) when the live gold layer AND the content pack both cannot serve a business need. Takes the user's business logic, inspects the Fusion PVO SOURCE schema (not bronze) for available raw fields, and authors the lowest-cost, additive, non-destructive change as content-pack YAML + SQL in an overlay pack — never touching already-materialized (possibly terabyte-scale) bronze/silver. Then validates and hands off to seed. Use when oac-dataset-advisor reports a true GAP, or the user says 'add a metric/dimension my gold layer doesn't have', 'create a new mart for <business logic', 'I need a column that doesn't exist'. Does NOT seed, query live data, alter existing nodes' grain/keys, or write Python dim modules.

## Facts
- Page: https://tashan.sh/capability/skill-oracle-samples-mart-author
- tashan id: skill:oracle-samples/mart-author
- Source: https://github.com/oracle-samples/oracle-aidp-samples
- Type: skill
- Category: devtools
- tashan score: not scored (catalogued only — too little public evidence)
- Adoption: 9.0
- Upkeep: 95.0
- Freshness: 90.0
- Evidence coverage: 84% of the inputs this score can use
- Health: active
- Instruction depth: not yet graded
- License: UPL-1.0
- Official: no

## Install

```sh
cp -r mart-author ~/.claude/skills/
```

## Security audit
Not scanned. We audit npm-published capabilities; this one has no npm package we can resolve, or has not reached the queue. This is not a clean bill of health.

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Measured 2026-08-20 by tashan (https://tashan.sh) from public evidence. Scorer s5.