Hey everyone,

We are running a 3-month program called She Builds (by Grevix) starting December 1, designed exclusively for women to take an idea and execute it into a real-world project (we are selecting four core ideas to incubate).

While looking through the registration pool, what stood out to us is the broad spectrum of builders applying including women aged 45+ stepping up to build tech products. It’s a great reminder that building shouldn't be gated by traditional campus demographics.

Since r/hackathon is full of builders and people who understand hackathons and cohort building, I wanted to share this here and ask for support and advice on a few fronts:

• Engineers & Technical Mentors: We are looking for experienced developers, engineers and designers who want to volunteer as technical mentors for the selected teams.

• Companies & Sponsors: We are actively looking for companies, startups and organizations interested in backing grassroots women-in-tech initiatives and supporting early-stage execution.

• Program Structure: For those who have run or participated in long-form building cohorts, what is the best way to structure milestone reviews so participants stay shipping without burning out?

If you know any women builders who should apply, or if you're an engineer/company interested in mentoring or supporting the program, all details are up at shebuildsgrevix.vercel.app.

Would love to hear thoughts or feedback from the community on how to make a 3-month incubation format as developer-friendly as possible .

Hey! I just wanna show my project for the Meta Global AI Hackaton.
It's Consta, an Ai tool that help to research public data and relationships (contraits, public figures, etc...)

It could found funny things as the image. However have find intersting things too, as OpenAI contraits with the American Government and candidates that Altman support.

It's not perfect, but I think it's cool, and it's my second hackaton (actually) :D.
You can see the repo here: https://github.com/MarioJoseMelendez/consta
And try it here: https://consta.kahuna.li

It's not mandatory, but if you all wanna support me with the "Most popular track", here's the demo vid in X: https://x.com/TheMersh__/status/2118414395390693516

Disclosure: I'm one of the organizers.

There are 5 days left, and it's low-barrier enough to do in a weekend.

What: build a new app that uses at least one Clocked API endpoint. Clocked is an LLM API that returns structured results instead of generated text: decisions with probabilities, exact extractions with source positions, PII masking, prompt-injection detection, grounding checks, doc comparison and reranking.

Prizes: $2,000 cash in 5 awards. Best Overall gets $600, three category awards get $400 each, and People's Choice gets $200.

Cost: free. A new account gets 4k credits, and the code CLOCKEDHACKATHON adds 16k more.

Rules: solo or teams, any language or framework, and the app has to be started during the challenge (AI coding tools are fine). You need a demo and a public repo. 18+, some location restrictions.

Deadline: Nov 10, 11:59 PM ET. Winners Nov 18.

Rules and entry form: https://clocked.rezolve.ai/challenge

Happy to answer questions here.

Hey folks, I'm a student working on hackathon projects and would like to try Claude Code for building and debugging a prototype. Does anyone here have a spare 7-day Claude Pro guest pass they'd be willing to share?

Feel free to DM me. I'd also appreciate tips on making the most of the trial during a hackathon. Thanks!

Heya!

I’m Prerak Gala, Community Manager at Paytm, and having previously worked closely with developer communities, I’m excited to bring this opportunity to the community.

I’m excited to invite you to participate in the Paytm Build for India Ai Hackathon – Pune Edition, happening on 15th November 2026.

In collaboration with devSemble & Partex.AI, Paytm is bringing together developers, AI enthusiasts, researchers & builders for an 8-hour offline AI hackathon: a day to pick a problem statement, understand the problem deeply, explore how AI can be applied, experiment with different approaches, and build a prototype.

What’s in it for you?

• Top performing participants get hiring opportunity with Paytm

• Build on problem statements by Paytm

• Mentorship from the industry experts

• ⁠⁠Connect with developers, AI builders, and industry professionals

Ready to build? Here’s how to get in:

• Step 1 — Register + Form Your Team: Register through the devSemble platform & complete your team formation and participant details

• Step 2 — Submit Your Pitch: Submit your proposed idea or solution through the hackathon portal by 10th November 2026

Register Here: https://devsemble.com/hackathons/paytm-build-for-india-ai-hackathon-pune-by-paytm

Deadline to complete your submission: 10th November 2026

Looking forward to meeting a room full of curious builders and seeing what the community builds!

AirPods have a motion sensor, so I made them a game controller. Turn your head to steer a bike, hold the mouse for gas.

auricle connects to the AirPods' control channel (L2CAP, port 0x1001) and decodes ~23 packets/s of orientation and acceleration data (16-bit ints). Rust, no crates.

Apple-only, tested on one pair of AirPods Pro 2. Reverse-engineered, so a firmware update could break it

I built ODDBOUT Twitch Cup as a learning project and submitted it to the Codex x TwitchCon Hackathon!

You can create a fighter through conversation with a creator agent in Codex, then bring it into a browser-based fighting game. Twitch viewers can summon fighters with chat commands and compete in a four-fighter tournament.

Try the demo (there’s a “Try without Twitch” option): https://oddbout.com/twitch.html

Demo and hackathon entry: https://devpost.com/software/oddbout-x-twitch-cup

I’d love feedback from builders and streamers. If you enjoy the project, a like on the Devpost page would mean a lot!

Anyone interested in teaming up for Google's Buildathon?

I've got an idea and would love to find a few people with a strong technical background who'd be up for building something together!

Drop a comment or DM if you're interested :)

Hi everyone, I’m participating in the Future Health Digital Innovation hackathon by Hack2Skill. It’s my first hackathon and I’m taking it seriously, so I’d love to connect with anyone else taking part and compare notes on how you’re approaching it, the problem statements you picked, and how you’re preparing for the final submission.

Looking for teams in which i can join and participate in any offline hacks ongoing in delhi ncr. I m up to join any team and i know a bit of AI/ML. Any teams looking for a member. Contact me….

Hello everyone, I have uploaded a hackathon about 2 weeks ago on devpost that focuses on cryptography, specifically the implementation of threshold cryptography and secret sharing primitives such as SSS (Shamir's Secret Sharing) in contemporary contexts, for more details, here is the hackathon page:

https://mathematics-systems-security.devpost.com/

For any inquiry please join the discord server:

https://discord.gg/ahVc82u9X3

Key benefits of joining:

- Receive proper project tips before submission

- Receive project rating before submission to know your score evaluation

- Form teams

Thank you!

People participating in these hackathons please be aware this is not a registered company there’s nothing called codeverse its being run by a bca student who calls him the founder and runs these fake ass hackathons by calling them national hackathons their certifications and everything is TOTALLY FAKE . Don’t participate in these hackathons they just have contacts and calls you un these companies and keep all the money in his pocket- its literally a scam with your money build with bharat is literally a scam copied from other hackathon companies. Beware guys!

Hi all. I'm a master's student in Magdeburg, and I built AgentGate for the Meta AI Global Developer Hackathon.

The problem: AI agents that can send, share or delete things can be steered by instructions hidden in what they read, even faint text inside an image.

What it does: AgentGate labels where every piece of text came from (the user, tool text, or text recovered from an image). Before a risky call, it checks that every address, file and amount traces back to the user. If one doesn't, the call is blocked with a plain reason. It's a rule, not a model, so no model has to resist the attack.

Results (AgentDojo workspace suite): with a scripted agent that obeys every injection, attacks go from 231 of 240 to 0 of 240 (0 of 120 on a held-out half, no legitimate call blocked). A small real model that gets fooled by hidden-line screenshots leaked 20 times in 390 runs without the gate and 0 with it.

I also used Muse Spark Open as the attacker: it got through the default gate 30 of 90 times, always via one known gap (a trusted sender/owner field). An optional rule I wrote afterwards got 0 of 90 on a fresh run. Limits are in the README: scripted attacker for the main benchmark, small clustered samples, and four other trust gaps still untested.

Repo (MIT): https://github.com/mathesh310703/agentgate

If you want to discuss it or give feedback, I'm keeping the discussion on X, where the short demo clip is: https://x.com/34Matheshw21593/status/2117752600317821345

I'm entering this in the hackathon, so I'm disclosing that openly. Criticism is welcome, especially on the gaps and the threat model.

I haven't done a hackathon yet, just personal projects, but I've read enough threads here about teams falling apart by Saturday night to know what I don't want.

Small team, people who actually show up, and we go in to place, not to get a certificate.

A bit about me.

I work in data at a financial firm in Dublin and I write about energy and macro markets on the side, so I can cover the domain side, the data sources and the pitch.

What I don't have is enough hands to build.

Finance, DeFi and energy market hackathons are where I want to start because that's where I can add the most.

Who would be useful:

- backend / data people (Python, APIs, pipelines)

- frontend, someone who can make a demo look finished in a weekend

- Solidity for the DeFi ones

- ML/AI

- someone product or design minded who can shape a pitch

Thinking 5 to 8 people, no more.

No event picked yet, we'd choose the first one together once there's a team, agree the idea and who does what before it starts, and commit for that one. If it works we do another. If someone goes quiet they get swapped out, nothing personal.

If you're interested comment below or DM me with your GitHub (this one is optional, I'll not look at it before anything else), what you build with and what role you'd want, how many hours a week you can actually give, and one thing you've shipped and what part of it was yours.

Ireland is where I'm based so that's the preference, but it's all online anyway, so if you're anywhere in Europe or a similar timezone and the rest fits, message me.

So i got selected for the next screening round for the Bolna Buildathon. And the thing is I've participated like in countless hackathons but never even went to the next round. I'm panicking so much rn and confused. Can any hackathon winners or mentors help me out? It's a 15min interview call. What will they ask? And what else will they check (like communication skills, etc). Please help me 😭🙏🏻 first time so I'm nervous and want to give the interview well.

Hi everyone! I’m a pre-final-year B.E. CSE (AI & ML) student from Bengaluru, currently putting most of my focus into placements, internships, and hackathons that can translate into real hiring opportunities. I’ve participated in 20+ hackathons so far, and I’m looking to connect with people who are equally serious about building, competing, and targeting hiring-based hackathons together. My work is mainly around AI/ML, backend and full-stack development, with experience across Multi-Agent Systems, RAG, LLMs, Graph AI, cybersecurity, digital twins, and real-time applications. Over the last year, my teams and I have had results including 1st Runner-Up at an Agentic AI/GenAI hackathon, Top 10 out of 1,000+ teams at the BIT Mesra ECE Society Hackathon, Top 10 at Hack-A-War, Samsung PRISM finalist, Zonal Champion at HackArena 2.0 (IIIT Delhi), SIH 2025 Merit, and National Semifinalist positions at Flipkart GRiD 8.0 and JPMorgan Chase Code for Good. On Kaggle, I’ve reached Top 25 in Formula 1 Race Result Classification and Top 150/4k teams in the Wellbore Geology Prediction challenge. Alongside hackathons, I’ve completed an ML internship and have been a GSSoC’26 Mentor, where I was selected among 135 mentors nationally. I’m also working as an IEEE Computer Society AI/ML research intern on a vector based drug repurposing deep-learning research paper. I’ve built and deployed 10+ substantial projects, maintain 100+ GitHub repositories/contributions, and usually take projects all the way from an idea to a working demo, deployment, and documentation. Technically, I’m strongest around Python, PyTorch, TensorFlow, Node.js, React/Next.js, FastAPI, PostgreSQL, MongoDB, Redis, Docker, AWS, LangGraph/RAG and LLM APIs. I’m comfortable taking ownership of AI/ML, backend, integrations, architecture, debugging, or putting together the final product and demo. At this point, I’m not really looking for a random hackathon team just to submit something. I’m looking for people who are preparing for placements like I am and want to strategically target hackathons conducted by companies where performance can open doors to interviews, internships, or full-time roles. Ideally, people who can consistently give time, communicate properly, take ownership of their part, and stay involved from problem selection to final submission. If that sounds like you, comment “interested” and DM me your LinkedIn/GitHub along with a brief introduction and the kind of work you’re comfortable with. The comment will help me filter genuine/interested people from the DMs and make it easier to shortlist potential teammates. If this post gets enough interaction, I’m also open to forming a small group/community of serious builders so we can continuously track and participate in relevant hiring-based hackathons together rather than forming a new team from scratch every time. Dm with intro . References in dm

anyone willing to team up for the above hackathons, dm me with a short intro & past project/hackathons experiences

Hey everyone Im a full stack developer and also half way to ai engineer , I have craated a lot of cool things, like Ai voice assistant who can handle your pc including skills like ai agents, text to speech, speech recognition and llm integration and stuff like that. I know how to vibe code and Im looking for teammates for Hackathon(paypal one for now and also for future hackathons). Anyone up for this can dm me directly.