{"id":65887,"title":"✨ Grai - Open-source version control for metadata","tagline":"Grai knows how a database migration will impact deployed ML models, APIs, and more because it understands how data relates across systems.","body":"![uploaded image](/media/?type=post\u0026id=65887\u0026key=user_uploads/696649/b51bcf0a-5353-4db3-b9c4-8836f2ea423a)\n\n**TL;DR Grai makes developers smarter by bringing metadata from across their stack into their development tools. We make testing data flows between applications painless.**\n\nGo to 👉 [grai.io](http://grai.io)\n\n### 😭 **Problem**\n\nTracking (let alone testing) data once it leaves a production environment is challenging. Whether in a data engineers transformation pipeline, an ML model, or the CFO’s metrics dashboard, that data _will_ be used elsewhere. Without visibility on those use cases data changes remain risky and outage prone.\n\n### 🚀 **Solution**\n\nGrai is an open-source data management platform designed to help you better use your data.\n\n* **Automated data lineage** - Pre-built connectors to keep metadata fresh.\n* **Integrated with git** - Changing a column in your DB? Run data integration tests for all downstream users as part of your standard CI/CD process.\n* **One-stop-shop** - A unified model of your entire data stack.\n* **Your data belongs to you** - Grai is open-source \u0026 self-hosted with a cloud option coming soon.\n\n### 🎉 **Closing thoughts (and asks!)**\n\nMy ask: give it a shot!\n\n* Browse the [code](https://github.com/grai-io/grai-core)\n* Check out the [demo](https://github.com/grai-io/grai-core/tree/master/examples/quick_start_postgres)\n* Reach out! [ian@grai.io](mailto:ian@grai.io)\n\n\\~ Ian\n\n![uploaded image](/media/?type=post\u0026id=65887\u0026key=user_uploads/696649/7ecc72b3-40f5-4473-ae0f-157159a139eb)\n\n","slug":"H8h-grai-open-source-version-control-for-metadata","created_at":"2022-09-07T00:00:00.601Z","updated_at":"2026-04-24T22:53:50.321Z","total_vote_count":51,"url":"https://www.ycombinator.com/launches/H8h-grai-open-source-version-control-for-metadata","share_image_url":"//bookface-static.ycombinator.com/assets/ycdc/yc-og-image-c440a0ad1dacfb86eeeb343717479cc54d256614449b4ef719977a0a451f8bc8.png","company":{"id":27040,"name":"Grai","slug":"grai","url":"https://www.grai.io","logo":"https://bookface-images.s3.amazonaws.com/small_logos/217dbf57c9649c7822bbee101a62b2d34a750a85.png","batch":"Summer 2022","industry":"B2B","tags":["Developer Tools","SaaS","Analytics","Open Source","Data Engineering"],"search_path":"https://bookface.ycombinator.com/company/27040"}}