Bhargavi Tambe@bhargavi08

Ripple is a cross-repository code impact analyzer built on IBM Bob Shell. It solves one of the most expensive problems in software development: understanding the downstream consequences of a code change before it breaks production. Tools like GitHub Copilot and Cursor answer "what does this file do?" Ripple answers something fundamentally different — "if I change this, what breaks everywhere else?" This is only possible because IBM Bob holds full repository context, not just a single file. How it works: A developer describes an intended change — for example, "rename field lastName to surname in Owner.java." Ripple's Spring Boot backend calls IBM Bob Shell as a subprocess, passing the full repository context. Bob reads the actual codebase, traces every reference, dependency, and downstream usage, then returns a structured impact map listing every affected file, the reason it is affected, and a risk level: HIGH, MEDIUM, or LOW. We demonstrated this on Spring PetClinic, a canonical Java Spring Boot codebase. A single field rename in Owner.java caused Bob to identify 22 affected files across 6 modules — Java service classes, repository interfaces, HTML templates, SQL schema files, i18n properties in 8 languages, and JMeter test plans. Ripple exposes two APIs: POST /api/analyze triggers a live Bob analysis and returns results with a unique ID. GET /api/analysis/{id} lets the frontend fetch results asynchronously. A GitHub Action runs Bob automatically on every pull request and posts an impact summary as a PR comment — giving teams instant visibility before code is merged. The frontend renders an interactive ripple map — a visual graph where nodes are files and edges show dependencies, with HIGH risk files highlighted in red. Ripple was built in 48 hours by a team of 6. It demonstrates Bob's unique repo-context superpower in a practical, shippable developer tool with real business value.

Build solutions that improve how software is built. Work with an AI that understands your codebase, helping you reduce repetitive work and build with real context. ⏳ Build your project in 48 hours. 🚀 Get hands-on with IBM Bob and explore how AI fits into real development workflows before it becomes standard. 💡 Build tools and workflows that developers would actually use. ⭐ Learn directly from experts throughout the event. 🤝 Join a team or build solo. 💰 Prize pool: $10,000 🧑🏻‍💻 Register before the Kick-Off Stream and start building with Bob.