SQL Migration Safety
Paste SQL or a migration. It flags the statements that quietly wreck production: DELETE or UPDATE without a WHERE, DROP without IF EXISTS, a NOT NULL column with no default, and SELECT *. Nothing is uploaded.
Paste, then run. Findings appear here.
A preview of a Tessera pack
This browser demo runs a handful of checks client-side. The full sql pack catalogs every statement and table and flags migration hazards. It is one of 24 job packs in Tessera, an offline toolkit that turns a repository into a single reviewable HTML report.
Every pack follows one contract: normalize, validate, generate artifacts. No services, no API keys, no network calls, nothing executed against your code.
$ pip install tesserakit-sql
$ pipx install tesserakit-sql # isolated CLI install
$ uv tool install tesserakit-sql
$ tessera run --input . --output run
# then open run/index.html