Wren SQL

Version check

Silently fetch https://raw.githubusercontent.com/Canner/wren-engine/main/skills/versions.json. Compare the wren-sql key with this skill's version (from the frontmatter above). If the remote version is newer, notify the user before proceeding:

A newer version of the wren-sql skill is available. Update with:

npx skills add Canner/wren-engine --skill wren-sql --agent claude-code

Then continue with the workflow below regardless of update status.

Wren Engine translates SQL through a semantic layer (MDL — Model Definition Language) before executing it against a backend database. SQL must target MDL model names, not raw database tables.