Hack the Valley - wow
This is a submission for the MLH x DEV Writing Challenge What I Built Money decisions can feel overwhelming , especially when financial tools assume…
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I Built a Phishing Trainer Solo in 24 Hours and Lost. Here’s What I Learned.
This is a submission for the MLH x DEV Writing Challenge What I Built I built Hooked , a game that teaches middle and high school students to spot p…
Can This Discount Actually Make Money? Building HustleRadar with Gemma 2 and SerpApi
HustleRadar: A Human-in-the-Loop AI Workspace for Safer Resale Decisions What I Built HustleRadar is a human-in-the-loop AI decision workspace for p…
We loaded FalkorDB's GitHub into FalkorDB: Now it explains itself
We chose the dataset where a wrong answer would get caught fastest: a year of FalkorDB's own GitHub history, loaded into FalkorDB. Ask Aevion "Who k…
When someone quits, what leaves with them? We asked a graph.
When a person leaves a company, the handoff list shows what they own. What only they know usually stays off it: a decision nobody else wrote down, a…
Every prescription looked reasonable. The chain didn't.
All patient data in this post is synthetic. FirstDomino is a hackathon prototype, not a medical device, and it has not been clinically validated. TL…
Black Box: finding yesterday's warning signs in 225,000 maintenance reports
On 1 April 2011, Southwest Flight 812 lost a five-foot strip of fuselage skin at 34,000 feet. Everyone survived. The NTSB's final report described f…
I shut down the L train in a graph: max flow, min cut and AI agents on the New York subway
Picture 8 a.m. on a Wednesday in October. A signal fire in the Canarsie Tube stops the L between Bedford Av and 8 Av, in both directions, until furt…
Combining Roblox and Robotics. Playing videogames by controlling the physical world.
This is a submission for the MLH x DEV Writing Challenge What We Built Roblotix is a set of Roblox games played by two people at once: a player at t…
Search finds documents. My graph finds consequences.
How I built Premise, a company brain for engineering decisions, on FalkorDB for WeMakeDevs × FalkorDB Graph Hacks. The 7 minute demo, if you prefer…
Life's Too Short to Stand in Line 💚
Life's Too Short to Stand in Line 💚 This is a submission for the MLH x DEV Writing Challenge . What We Built Imagine visiting London, finding a rest…
Before money moves, check with us: scam protection the family runs
This is a submission for the MLH x DEV Writing Challenge Every scam script has the same line in it: "Don't tell your family." So we built the opposi…
SolSentry IoT: Autonomous Perimeter Defense with Solana Web3 Notarization
What I Built Physical security systems in traditional facilities suffer from a critical vulnerability: centralized telemetry manipulation. If a secu…
How Qwen 3.8 Max Turns Plain English Into On-Chain Guardrails
Sentinel — AI Policy Assistant, built for the Monad Metropolis hackathon (Alibaba Cloud / Qwen 3.8 Max bounty) The problem: nobody knows how to conf…
What If Our Desktop Had Its Own Little AI Companion? Meet Luna
This is a submission for the MLH x DEV Writing Challenge Meet Luna 🐱 What I Built My husband and I have always liked those little animated desktop p…
Hack the World: Why hackathons are still the best place to learn to build
The barriers to building software have collapsed. Today, anyone can build. Hackathons are a great place to start learning. The post Hack the World:…
🛡️ DecisionShield: An AI That Audits Your Decision Before You Make It
Don't ask AI what to choose. Ask AI if you're ready to choose. We use AI every day to make decisions. Which technology should we use? Should we migr…
An agent that fixes your servers, repairs configs and asks before anything risky (MHacks 26)
This is a submission for the MLH x DEV Writing Challenge What was Built Nightshift is an agent that has terminal access to your machines while their…
Your first hackathon: prepare well and get your project to a working demo
Go into your first hackathon with a task you can finish and explain. For a beginner, a good result is concrete: your team builds a working user flow…
The server locked the scores. The judge’s screen still said “Update.”
Glassbox had a misleading screen at exactly the moment a judging platform needs to be clearest. An organizer published the results. The server corre…
Keep an older search response from replacing the latest results
Give each search request a sequence number and only render the result that belongs to the latest search. A hackathon demo can look fine when typing…
Cancel a demo request when the user leaves its screen
Cancel a screen's pending request when the user leaves it, and keep that deliberate cancellation out of the visible error state. A hackathon prototy…
From glBegin(GL_TRIANGLES) to CUDA Kernels: What Graphics Programming Taught Me About Systems
This is a submission for the MLH x DEV Writing Challenge What I Built I didn't build one big app. I spent the last few months building a lot of smal…
Build hackathon demo data without copying real identities
Build hackathon demo fixtures from invented records. Keep the scenario useful without copying real identities into a repository, presentation or scr…
Built GitOCX — an AI-powered GitHub repository analysis platform.
What I Built I built GitOCX , an AI-powered developer tool that analyzes GitHub repositories to help developers understand how a project evolves and…
Your Next Incident Shouldn’t Start From Zero: Building Recall
An incident is resolved. The dashboard turns green. Someone writes a short summary, closes the ticket, and moves on. A few weeks later, another engi…
I Gave My Data Pipelines a Memory: Building PipeMind with Hindsight and Groq
The 2 AM problem Every data team has lived this. A pipeline fails in the middle of the night. Somebody gets paged, stares at a stack trace, and thin…
UrbanPulseNYC
This is a submission for the MLH x DEV Writing Challenge What I Built We built UrbanPulse NYC , an AI-powered hazard detection, reporting, and aware…
PulseMind: Building an AI Product Intelligence System That Learns From Decisions
Introduction I’m excited to share PulseMind, an AI-powered Product Intelligence platform that I built for HackwithHyderabad 3.0. I built PulseMind a…
MemoryDesk: Building an AI Customer Support Agent with Presistent Memory
MemoryDesk: Building an AI Customer Support Agent with Persistent Memory The Problem AI customer-support agents are useful, but a common limitation…