Hacker
Triyansh Agarwal
@triyansh
BlastRadius: what breaks if I change this code?
Graph HacksOct 2026
Changing one function in a large codebase can silently break many others, and first-time open source contributors are often afraid of exactly that. BlastRadius turns a Python repository into a graph in FalkorDB (functions, calls, tests, contributors). An LLM agent answers "what breaks if I change X?" by choosing graph tools over MCP, and the dashboard highlights the exact path behind the answer, shows a risk level from graph algorithms, and generates a ready PR comment. Change Check goes one step further: it compares your uncommitted changes with the last commit, finds only the new problems your change introduces (removed, renamed or re-signatured functions that still have callers), suggests fixes that are re-checked against the new signature, and produces a git patch. It never applies or commits anything by itself. Built for developers, maintainers and first-time contributors.
Jalmarg
Environmental HacksOct 2026
https://builder.aws.com/content/3KYjoAbwxLEIWaYTsdAF8ivb3cP/jalmarg-building-a-safer-way-through-urban-flooding
RangersX@jayaa_05,@sudhanshu_x_01,@gauri_mshra