Artifacts
Self-contained, interactive tools that each make one piece of the engineering tangible — data pipelines, SQL window functions, data lineage, consent compliance. A few are built purely for the fun of it. All run in the browser, outside any framework.
Semantic dbt Tests, Scored
dbt tests written as English sentences, replayed from logged live runs: move the threshold, switch the request layout, and watch precision and recall against a hidden answer key and a regex baseline.
Dark Patterns Lab
Build a cookie consent banner from parts, flip the dark patterns the industry actually uses, and watch a GDPR/ePrivacy compliance meter call out violations article by article.
dlt Pipeline Sandbox
Interactive dlt → DuckDB pipeline simulator. Pick a source, write disposition, and schema contract, then run the pipeline and watch extract, normalize, and load play out step by step.
SQL Window Functions
Visual explainer for SQL window functions. Pick ROW_NUMBER, RANK, LAG, or a moving average, then hover any result row to see exactly which rows its window frame covers and why.
Semantic dbt Tests, Scored
dbt tests written as English sentences, replayed from logged live runs: move the threshold, switch the request layout, and watch precision and recall against a hidden answer key and a regex baseline.
dlt Pipeline Sandbox
Interactive dlt → DuckDB pipeline simulator. Pick a source, write disposition, and schema contract, then run the pipeline and watch extract, normalize, and load play out step by step.
SQL Window Functions
Visual explainer for SQL window functions. Pick ROW_NUMBER, RANK, LAG, or a moving average, then hover any result row to see exactly which rows its window frame covers and why.
Data Lineage Viewer
Interactive column-level data lineage graph: trace how data flows from sources through staging and marts to dashboards. Click a node for its impact path, click a column to follow it.
Pipeline Dashboard
Simulated data pipeline health dashboard with real-time freshness monitoring, row count sparklines, schema drift alerts, and SLA tracking. Click pipelines to inspect runs.
Regex Playground
Live regex testing with syntax-highlighted matches, capture group breakdown, and match statistics. Type a pattern, paste your text, see results instantly.
Sprint Velocity Tracker
Agile sprint dashboard with burndown chart, velocity trend, cycle time distribution, and WIP tracking. Click sprints to drill into story breakdowns.
Gravity Sandbox
N-body gravitational simulation. Place stars and planets, watch orbits form, collide, and slingshot. Click to spawn, drag to set velocity.
Prompt to Visual
Type anything and watch thousands of particles morph into your words. Customize colors, physics, and particle count. Pure canvas, zero dependencies.
Signal
Radar-sweep Space Invaders with fog of war. Built for Rens.
Voronoi Terrain
Interactive Voronoi diagram that generates colorful terrain landscapes. Click to seed points, watch cells recalculate. Choose biomes, adjust density, toggle elevation.