Scherlok
Your data broke in production. Again.
Scherlok makes sure it doesn't happen next time.
Zero config. Zero YAML. Zero rules to write.
Scherlok learns what "normal" looks like, then tells you when something changes.
The Problem
Every data team has the same nightmare:
A source API silently changes from dollars to cents. Revenue dashboards show wrong numbers for 3 weeks before anyone notices.
A column starts returning NULLs. A table stops updating. Row counts drop 40% on a Tuesday. Nobody knows until the CEO asks why the report looks weird.
Current tools (Great Expectations, Soda, dbt tests) require you to define what "correct" looks like before you can detect what's wrong. Hundreds of rules. Dozens of YAML files. And you still miss things — because you can't write rules for problems you haven't imagined yet.
The Solution
Scherlok takes the opposite approach: learn first, then detect.
scherlok connect postgres://user:pass@host/db # connect once
scherlok investigate # learn your data
scherlok watch # detect anomalies
