Open Source · Apache 2.0
Data contracts that execute, not just document.
Define your data product in YAML. LakeLogic enforces it at pipeline time — bad rows are quarantined the moment they appear, not three dashboards later. Same contract runs on Polars, Spark, or DuckDB.
14K+ installs · Apache 2.0
What's in the box
One contract. Three engines.
Auto-discovers the best engine for your environment. SQL-first quality gates from Polars to petabytes.
Runtime Data Contracts
Enforce schema, quality rules, and business logic during data movement — not after. YAML, version-controlled, engine-agnostic.
Quarantine Bad Data
Automatically detour invalid rows in real-time. Bad data is isolated, tagged, and triaged — never silently dropped.
Medallion Architecture
Quality gate between Bronze → Silver → Gold. Clean the front door of your lakehouse with shift-left data quality.
Materialization Strategies
Append, merge, SCD2, or overwrite. Native Spark operations at petabyte scale. Same contract, different strategies.
Runnable proof — no install
Eight working notebooks. Open one. Run it. Trust earned.
Each notebook is self-contained, runs in Google Colab in under a minute, and maps to one pillar of LakeLogic's value. Click any tile to open it.
5-Minute Quickstart
One contract. Every row accounted for. PII masked automatically.
Data Quality & Trust
Reconciliation proofs, Pydantic validation, SQL-first rules, SLO monitoring.
Compliance & Governance
GDPR erasure in 2 lines, automatic lineage, cost intelligence.
Engine Portability
Same contract on Polars, DuckDB, or Spark. Zero code changes.
Developer Experience
Structured diagnostics, DDL migrations, surgical resets, multi-channel alerts.
Data Generation & AI
Synthetic data, referential integrity, edge case injection, contract inference.
dbt · dlt · DBs · Cloud
dbt adapter, dlt sources, contract-driven quality gates on arrival.
Production Data Mesh
dlt + Prefect + LakeLogic. Bronze → Silver → Gold. Delta Lake + any DB.
Two Products · One Vision
Outgrow the OSS? Bring it to Cloud.
LakeLogic Open Source is free forever. When you need Zeus AI, visual lineage, governance, and team workflows — drop your YAML straight into LakeLogic Cloud.
Talk to us about CloudApache 2.0 · runs on Polars, Spark, or DuckDB · 90+ runnable examples · zero vendor lock-in.
Browse the repoAlready using the OSS reference architecture? Drag and drop your docs/contracts/*.yaml folder straight into LakeLogic Cloud.
Bulk import contracts