AI agent for building data apps, dashboards and reports
Preswald is an AI agent that helps you build dashboards, internal tools, and data apps. It gives you a fast, reactive runtime, built-in UI components (tables, charts, inputs), and one-click deployment to share your app in the cloud or browser.
👋 Hey everyone — this is Amrutha and Shivam, co-founders of Structured Labs (YC S23) and the makers of Preswald (https://preswald.com), launching today.
Preswald is a programmable environment where you can build and deploy interactive Python data apps entirely in the browser. It’s like Replit meets Streamlit, but reactive, stateful, and tailored for data workflows, like investment reports, financial analyses, and product metric breakdowns.
You get:
- A real project+file system - A Pyodide-based runtime (runs in-browser: this is the coolest part; you don't need a backend to run Python analysis code!) - A code editor + live preview - An AI agent that writes and refactors code in-place, just like Cursor, but optimized for data reports - One-click deploys (Structured Cloud, GCP, or static export: you can just click a button and share with friends and teammates without having to worry about hosting services or cloud systems)
Why we built it:
We saw founders, PMs, and analysts doing their best thinking in Jupyter notebooks or ad-hoc scripts but getting those insights into usable tools meant jumping through too many hoops (frontend code, hosting, auth, etc.). We wanted to stay in Python, and still ship real apps. Creating interactive reports with user-facing drilldowns, filters, and more, can now be done by anyone with a tiny bit of coding experience, without complex deployments or hosting, just like we can all now do for general apps with tools like Bolt and Lovable!
Preswald is built around a reactive runtime: every component or computation is a tracked atom. Change a slider, update a threshold, rerun just the affected logic. The same Python file can run client-side or on a FastAPI server with zero changes to your code.
👀 Try it out: - preswald.com - github.com/structuredlabs/preswald
