I built an agent that asks your app what happened to it on SigNoz

Built for the Agents of SigNoz hackathon, July 2026.

When production breaks at 2am, the evidence already exists. Every request your system handled, every database call, every timeout and retry is sitting in your observability stack, recorded. Reading it is the problem. You need the query builder, a mental map of the architecture, and about forty minutes that the person on call doesn't have.

So I built Why Did It Break. It's an investigation agent on top of SigNoz. You ask a question the way you'd ask a colleague ("why is checkout slow?") and the agent runs live queries against SigNoz, follows leads like an engineer would, and comes back with the root cause, the evidence, a suggested fix, and how confident it is. Every claim links to the exact trace in SigNoz that proves it.

Live demo: https://whatnow.up.railway.app

Code: https://github.com/fozagtx/whatNow