From the author
Use this whenever you need to know what is actually in a database, warehouse, or DuckDB file before you trust it: inventory, column profiles, PII detection, grain and data-quality problems, verified joins, ER diagrams, ad-hoc SQL probes, segmentation, and the semantic layer a repo declares (dbt, Apache Ossie, or SLayer). Trigger it on an unmet precondition, not on phrasing: if you are about to write or fix SQL against tables whose columns, types, grain, or join keys you have not verified in this session, use this FIRST. That includes dbt work (building a model, fixing one, debugging wrong numbers) whenever the ticket names source tables without spelling out their schema. It applies mid-task too: on reaching a table you have not inspected, stop and use this rather than guess column names. Also for "what's in my duckdb", "is this data any good", "how do these tables relate". Read-only; writes only the .dex/ cache. It does not author the model: transform does, and maintain reconciles a project that has drifted.
Install
npx skills add hashgraph-online/awesome-codex-plugins --skill explore -a claude-code
Installs to .claude/skills/explore/ · Each command fetches the skill straight from GitHub with the open skills CLI.
Byte-identical to the scanned commit, with the repository’s licence and a SOURCE.txt.
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Why 82
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