codew/numbers
Toolkit
PlaybookVerify

Screenshot to data contract

A playbook for tracing a visible discrepancy through UI, cache, query, storage, parser, and source.

Data engineeringAgentic engineering
Use this

Download the reusable source

Read it before copying. Replace the example paths, dimensions, workflow names, and authority boundaries with those in your own system.

Primary artifact
Why it exists

Read the reasoning before the recipe

PlaybookVerify

Two screenshots became a failing data contract

A debugging workflow that normalizes two conflicting claims, traces one value to source, and preserves the finding as an executable contract.

Data engineering · Agentic engineering
Evidence

The field note behind the artifact

ProofUnderstand

The arithmetic was correct. The grain was wrong.

Data engineering · Machine learning