Welcome to Cal Hacks 12.0! We're so excited to have you join us at the Palace of Fine Arts for the world's largest collegiate hackathon.

Here are some resources to help you this weekend:

Live Site: live.calhacks.io

The Slack: calhacks.io/slack

We really hope you enjoy the weekend! Chat to any organizer (beige shirts) if you need anything or use the #ask-directors channel on Slack.

And, don't forget, go bears!

Requirements

  • Submit your hack by 10/26 9:30 AM PDT and make sure to add your teammates! You'll have until 10:30 AM to continue hacking and editing your submission (except for the table number), but the project must be submitted by 9:30 AM.
  • Include an image of your project and GitHub repository for any code to be considered.
  • Include the table number you're presenting from. This cannot change after 10/26 9:30 AM PST.
  • All work must be done during the hackathon
  • You will have two minutes to pitch and two minutes for judges to ask questions of you.
  • You must have a recorded video submission stored locally with a demonstration. 

Hackathon Sponsors

Prizes

$58,100+ in prizes
+ other prizes
Cal Hacks: 1st Overall
1 winner

Macbook Air or Framework Laptop (13”)

Cal Hacks: 2nd Overall
1 winner

Meta Ray Bans

Cal Hacks: 3rd Overall
1 winner

Nintendo Switch Lites

Cal Hacks: Best Hardware Hack
1 winner

3D Printers

Cal Hacks: Most Creative Hack
1 winner

iPad + Apple Pencil

Cal Hacks: Greatest Social Impact
1 winner

Apple Watches

Cal Hacks: Best Beginner Hack
1 winner

FujiFilm Polaroid Camera + Film

Claude: Best Use of Claude
1 winner

Tungsten Cube + $5000 API Credits.

Technical Complexity – Showcases advanced implementation, creative problem-solving, or innovative use of Claude Code beyond basic features.
Creative Use Case – Applies Claude Code in unexpected or novel ways that extend beyond standard dev workflows.
Impact & Practicality – Tackles real-world problems with clear potential for meaningful, lasting impact.

AppLovin: Query Planner Challenge
AppLovin: Ad Intelligence Challenge
Fetch AI: Best Use of Fetch AI
$2,500 in cash
2 winners

$2500 + Internship Interview Opportunity

Functionality & Technical Implementation (25%) – Works as intended; agents communicate and reason effectively in real time.
Use of Fetch.ai Technology (20%) – Agents registered on Agentverse and integrated with the Chat Protocol for ASI:One discoverability.
Innovation & Creativity (20%) – Original, inventive solution tackling problems in new or unconventional ways.
Real-World Impact & Usefulness (20%) – Solves meaningful problems with clear value for end users.
User Experience & Presentation (15%) – Clear demo, smooth UX, and well-structured presentation.

Fetch AI: Best Deployment of Agentverse
$1,500 in cash
3 winners

$1500 + Internship Interview Opportunity

Functionality & Technical Implementation (25%) – Works as intended; agents communicate and reason effectively in real time.
Use of Fetch.ai Technology (20%) – Agents registered on Agentverse and integrated with the Chat Protocol for ASI:One discoverability.
Innovation & Creativity (20%) – Original, inventive solution tackling problems in new or unconventional ways.
Real-World Impact & Usefulness (20%) – Solves meaningful problems with clear value for end users.
User Experience & Presentation (15%) – Clear demo, smooth UX, and well-structured presentation.

Fetch AI: Best Use of ASI:One
$1,000 in cash
2 winners

$1000 + Internship Interview Opportunity

Functionality & Technical Implementation (25%) – Works as intended; agents communicate and reason effectively in real time.
Use of Fetch.ai Technology (20%) – Agents registered on Agentverse and integrated with the Chat Protocol for ASI:One discoverability.
Innovation & Creativity (20%) – Original, inventive solution tackling problems in new or unconventional ways.
Real-World Impact & Usefulness (20%) – Solves meaningful problems with clear value for end users.
User Experience & Presentation (15%) – Clear demo, smooth UX, and well-structured presentation.

Y Combinator: Build an Iconic YC Company - 1st Place
3 winners

Guaranteed interview with a YC partner

Y Combinator: Build an Iconic YC Company - 2nd Place
1 winner

Guaranteed office hours and special swag.

Postman
3 winners

To be announced!

Warp: Best Use of Warp
1 winner

Airpods for winners!

Prizes will be judged on Innovation, Technicals, Presentation

Vapi: Best Use of Vapi
3 winners

The winner will win special swag and Vapi credits.

Judges will vote on the best use of Voice AI in a project that uses Vapi.

Elastic: Best use of the Elastic Agent Builder on a Serverless instance
$3,000 in cash
2 winners

1st place: $2000, 2nd place: $1000.

Qualified projects must:
1) Ingest and store data within Elastic
2) Using Agent Builder, register custom tools (Queries, actions)
3) Expose custom tools using MCP

CodeRabbit: Best Use of CodeRabbit AI
1 winner

Rey-Ban Meta AI Glasses

Judging Criteria:
Innovation (30%) – Creative use of CodeRabbit’s AI to enhance development.
Technical Implementation (30%) – Quality of CodeRabbit integration in workflow.
Impact (25%) – Improvement to productivity, collaboration, or code quality.
Presentation (15%) – Clear demo, explanation, and results.

Sui: Best Use of Sui
5 winners

Water bottles, T-shirts, and cash prizes

Rox: Best Use of Rox
3 winners

Cash prize, value to be announced!

LiveKit: Most Complex / Technically Challenging
1 winner

Interviews for the engineering team at LiveKit

Most Complex / Technically Challenging – Advanced use of LiveKit’s Agents framework or other SDKs.

LiveKit: Most Creative Project
1 winner

Apple Airpod Pro with engraved case

Most Creative Project – Unique or unexpected application of LiveKit, voice, or video agents.

LiveKit: Best Start-up Idea
1 winner

Jetson Orin Nano Super Developer Kit 3

Best Startup Idea – Strong market potential, clear value, and monetization viability.

The Bright Data: Best Use of Bright Data
3 winners

1st Prize: $1,500 Bright Data credits, $500 Amazon gift card
2nd Prize: $1,000 Bright Data credits, $300 Amazon gift card
3rd Prize: $500 Bright Data credits, $150 Amazon gift card

Visa
$200 in cash
1 winner

$200 in Gift cards

Reka: Best Use of Reka
3 winners

Reka Credits and recognition as a showcased project on Reka’s website

Conversion: Best Use of Conversion
2 winners

Vespa Scooter (or cash equivalent)

Projects must incorporate workflows, ideally using Temporal, and include a workflow builder as part of the application.

Judging Criteria:
Entries will be evaluated based on technical acumen and creativity.

Conway: Most Data-Intensive Application
2 winners

4 WHOOP watches

Data-Intensive Applications
We’re looking for projects that process large volumes of data with significant computation per record — such as transactions, sensor readings, or user interactions — while performing complex operations like pattern matching, aggregation, or model inference.

Lava: Best Use of Lava Gateway
$4,000 in cash
3 winners

1st place: $2.5K cash
2nd place: $1K cash
3rd place: $500 cash

Hackers looking to participate in the Lava Tech Prize only need to ensure that they incorporate Lava Gateway when they're building their project. Bonus points, but not necessary, if they also set up an initial pricing configuration with Lava. After meeting the initial criteria, hackers will be judged on the quality, functionality, creativity, and business viability of their projects.

Composio: Best Use of Composio Toolrouter
1 winner

$4K in Composio Credits

Judging Criteria:

Creativity – Originality of the problem statement and the proposed solution.
Usefulness – Practical value and relevance to a clear customer segment.
Integration Depth – Extensive use of Composio Toolrouter to connect and orchestrate multiple applications.

Crater: Play-Do Prize
4 winners

Awarded to the hack with the most composable, iterative, and playful design — spanning software, hardware, or deep tech. We’re looking for creativity, elasticity, and usefulness in products or features that build on themselves or adapt in unexpected ways, making users say, “Wow, how did they do that?”

Prize:
Winner’s choice of:

4× Meta Ray-Ban Display & Neural Band (pre-ordered and paid for by Crater), or

“Hack for the Cow” — Crater buys a cow outright from our partner dairy farm, providing lifetime room and board, annual milk shipments, and fractional ownership among the team.

Promise: Public Impact Prize (sponsored by Promise)
1 winner

Exclusive Dinner in Berkeley with Leaders from YCombinator, Palantir, Google, and the White House + fast track interview with Promise's CTO.

Criteria:
Impact on Underserved Communities – addresses real world problems impacting low-income, at-risk, or otherwise marginalized individuals or communities.
AI for Accessibility – use of communication AI (voice, chat, etc.) to drive down barrier of entry.
Innovation – creative, forward-thinking application of technology.
Usefulness and Pragmatism -- solutions demonstrates understanding the problem and thoughtfulness on real-world viability.

A37: Best Use of A37
1 winner

Nuphy Field75 HEs ($150/person) and runner ups will receive $50/person

Main components to judge: system design, implementation, innovation, impact, presentation
System design (30 points)
- Clarity (10): Is the overall architecture easy to understand (diagram + explanation)?
- Modularity (10): Did they design cleanly - modular services, good separation of concerns, minimal “hackiness”?
- Scalability (10): Could this design handle increased load or additional users with minimal redesign?
Implementation & Usage (25 pts)
- Execution (10): Did they actually spin up infrastructure (e.g., Docker, cloud services, Kubernetes, Terraform, etc.)?
- Automation (10): Did they automate setup or deployment (scripts, IaC, pipelines, containers)?
- Reproducibility (5): Can others run it easily (README, clear setup, demo)?
Innovation (20 pts)
- Originality (10): Did they use infrastructure in a clever or unexpected way?
- Problem-Solving (10): Did they engineer around limits (cost, APIs, permissions, time) in a smart way?
Impact (15 pts)
- Utility (10): Does it address a real infrastructure challenge (deployments, monitoring, scaling, DevOps pain points)?
- Applicability (5): Could their approach reasonably be extended or integrated in a real-world system?
Presentation (10 pts)
- Explanation (5): Can the team clearly articulate their architecture and tradeoffs?
- Comprehension (5): Do they show genuine understanding of the infra concepts they used?

SnapDev
1 winner

Nintendo Switches

All finalists must have a live product
1/ Innovation and Creativity (25%)
2/ Impact and usefulness (25%)
3/ User experience (25%)
4/ Communication and presentation (25%)

Snap: Best Use of Snap Spectacles
4 winners

1st place: Spectacles for each winning team member
2nd place: Nintendo Switch (1st gen) for each winning team member
3rd place: Soundview speakers for each winning team member

Judging criteria is (1) technical implementation (2) innovation & creativity (3) Functionality & features (4) Impact & social relevance (5) user experience (6) visual & aesthetic quality

Ripple: Best Use of XRP Ledger
$1,000 in cash
4 winners

$1,000 (1st), $500 (2nd); $250 for best developer feedback

XRPL Track — Build an MVP
Create a working MVP using the XRP Ledger to solve a real-world financial problem. Suggested areas: payments, RLUSD apps, RWA tokenization, or decentralized identity (DID).

Features we’re looking for:
RLUSD-based apps or SDKs
DID-integrated fintech identity flows
Developer SDKs exposing XRPL features (escrows, tokens, RLUSD)
Payment apps, microfinance, or RWA tokenization

Requirements & Awards:
MVP must be public on GitHub with a detailed README
Show how XRPL can drive real DeFi innovation!

Regeneron: Grand Prize
$5,000 in cash
1 winner

Regeneron CalHacks prize rubric & criteria will be at https://regn.link/Calhacks

Groq: Best Use of Groq
1 winner

$100 in Groq Credit, lego McClarens for each member

Ethereum Foundation: Best App Built on Ethereum, or an Ethereum L2
1 winner

Mainnet ETH for top hackers

1. Technical Implementation – Depth, originality, and quality of the build; effective use of Ethereum/L2 (contracts, SDKs, infrastructure); code quality, scalability, and security.
2. Relevance to Ethereum (25%) – Meaningful use of Ethereum features (smart contracts, composability, on-chain logic); adherence to Ethereum principles; preference for projects only possible on Ethereum.
3. Innovation & Creativity – Novel ideas or approaches; use of emerging primitives (account abstraction, intents, ERC standards, restaking, AI agents, etc.).
4. User Experience & Design – Clear, simple interface; design that complements technical features.
5. Impact & Potential – Potential to grow into a sustainable product or contribution; addresses real-world or Ethereum ecosystem needs; clearly communicates significance.

Interaction Company: Best MCP Automation
1 winner

Meta Ray-Bans + Apple AirPods Pro 3 + Interaction × The North Face jackets

Most technically impressive automation judged on technical complexity, e.g. elaborate MCP connections, API integrations, novel use of MCP, etc.

Letta: Build Your First Stateful AI Agent with Letta Cloud
1 winner

AirPods + Letta Swag, Letta Swag for runner-ups

Eligibility:
Must use Letta Cloud or self-hosted Letta as a core component.
Demonstrate stateful agent behavior with meaningful persistent memory.
Include a demo showing memory and learning capabilities.

Judging Criteria:

Creative Use of Memory (35%) – Novel use of Letta’s memory architecture; thoughtful memory blocks; agent learns or adapts over time.
Technical Implementation (25%) – Well-executed Letta integration; effective use of features (tools, memory blocks, multi-step reasoning); clean code and architecture.
Impact & Usefulness (25%) – Solves a real problem; improves UX through statefulness; people would want to use it.
Demo & Presentation (15%) – Demo clearly shows memory in action; persistence across sessions; clear value proposition.
Example projects: personal assistants, adaptive tutors, research agents, context-aware support agents, or creative memory-driven applications.
Avoid: stateless chatbots, API-only wrappers, or projects that don’t demonstrate meaningful memory.
Bonus points: advanced Letta features, creative memory block design, and unique use cases.
Resources: workshop, sponsor booth, docs.letta.com, Discord: https://discord.gg/letta

JanitorAI: Most Functional, Novel, and Fun Project
2 winners

1 AirPods Max for each team member

Projects will be judged for functionality, novelty, and "fun".

fish.audio: Best use of Fish Audio
$250 in cash
1 winner

$250 cash per team member, $250 fish audio API credit per team member

Technical novelty - is the project technically impressive?
Creativity - is the idea creative and novel?
Broader Impact - does this project have broad real world impacts?
Use of Fish Audio API - does the project use Fish Audio API?

Chroma: Best AI application using Chroma
$200 in cash
1 winner

Most Wacky Hack (presented by Wordware)
$1,000 in cash
1 winner

$1,000 in cash & $500 in Sauna credit

[MLH] Best Use of AI powered by Reach Capital
1 winner

Logitech Webcam & Meeting with the Reach Capital Investors
AI has upended what we can accomplish with technology. Reach Capital invests in the next generation of founders and technical talent, and they want you to use AI to transform the future of learning, health, and work. Build a project that impacts one (or all!) of these areas for a chance to win a Logitech webcam for each member of your team and the exclusive opportunity to discuss your creation with Reach Capital’s team of expert investors.

Interested in working at world-changing startups? Reach's 130+ portfolio companies — including Replit, Brilliant, ClassDojo, GPTZero, and Desmos — are always looking for the next wave of talent. Share what you’re studying, building, or exploring, and Reach will connect you to career-defining opportunities. Add your profile and join the hackers already in the Reach talent network.

[MLH] Best .Tech Domain Name
1 winner

Prize: Blue Snowball Microphone & a Free .Tech Domain Name for up to 10 years! What's in a name? Everything! Especially when it ends in .tech. This prize, brought to you by our partners at Major League Hacking (MLH), will go to the team with the most memorable and innovative .tech domain of the weekend. Winners get to take home a Blue Snowball Microphone and will get their .Tech Domain Name free for up to a decade!

[MLH] Best Use of Gemini API
1 winner

Prize: Mechanical Keyboards What will you build with the power of next-generation AI? In partnership with Major League Hacking (MLH), this prize is for the team that uses the Google Gemini API to create something truly jaw-dropping. Think bigger than just a chatbot—generate music, analyze scientific papers, or invent a tool that no one has thought of before. Show us the future of AI. The team with the most innovative AI-powered application will win new mechanical keyboards!

[MLH] Best Use of Snowflake API
1 winner

Arduino Tiny ML Kit
Play with industry-leading LLMs on a single account using the Snowflake APIs. Adding AI capabilities into your application can be as simple as a single CURL command to Snowflake’s REST API.

Build customized applications, RAG powered chat bots, or embed AI-powered features into your app in half the time with half the hassle. Get started for free with a special, student 120-day Snowflake trial and check out this repository for an example of the Snowflake REST API in action.

[MLH] Best Use of ElevenLabs
1 winner

Prize: ElevenLabs Apple Airpods 4 Make your project speak for itself! With ElevenLabs' powerful generative voice AI, you can bring your hack to life with realistic, expressive audio. In partnership with Major League Hacking (MLH), we're challenging you to find the most creative or compelling use of their API. From dynamic storytelling to creating interactive user assistants, the possibilities are endless. The winning team will win a set of ElevenLabs branded Airpods!

[MLH] Best Use of DigitalOcean Gradient™ AIOpt
1 winner

Prize: 8BitDo Retro Mouse DigitalOcean Gradient™ AI is a unified AI cloud for building, training, and deploying machine learning models and AI agents. Get access to GPU infrastructure like DigitalOcean GPU Droplets and Bare Metal servers, along with serverless inference and 1-Click Models for instant deployment of your favorite LLMs!! Sign up for DigitalOcean today and get $200 worth of free credits that you can use towards building your next Gradient-powered hack. Enable your next project with DigitalOcean GradientTM AI for a chance to win some great prizes for you and each of your team mates!

BitRobot Network: Best Robotics Hack - 1st Place
1 winner

Earth Rover Mini+

BitRobot Network: Best Robotics Hack - 2nd Place
1 winner

LeKiwi kit

BitRobot Network: Best Robotics Hack - 3rd Place
1 winner

RoboCap Apparel

Creao: Best Real-World Productivity Tool
$1,750 in cash
1 winner

• 1,750 USD
• 1-year Pro subscription
• Potential internship opportunity
Awarded to the most practical and impactful system that improves productivity in everyday life or within an industry.

Creao: Smartest AI agent prize
$0 in cash
1 winner

• 1,250 USD
• 1-year Pro subscription
• Potential internship opportunity
Awarded to the team that pushes the limits of customization through unique logic, complex API workflows, or creative agentic systems.

Warp: Data Visualization Agent
1 winner

• Accelerated Internship Interview Process
• Prizes will be judged on Innovation, Technicals, Presentation

BaseTen: Best Use of Open Source Models
1 winner

Prize: Premium Baseten swag kits + $100 gift card to your favorite on-campus fast food spot per hacker, plus priority consideration to interview at Baseten

Eligibility: Project must use at least 1 open source model running either on Baseten or on edge (hacker's own computer/phone/robot/etc)

Judging criteria:
Technical sophistication
Originality
Importance of open source to the project

Creao: Best Designed Web App
1 winner

• 1,250 USD
• 1-year Pro subscription
• Potential internship opportunity

Creao: Best MCP Integration
2 winners

• 1,250 USD
• 1-year Pro subscription
• Potential internship opportunity

Ethereum Foundation: Honorable Mention
3 winners

$50 Amazon gift card

Regeneron: Runner-Up
$500 in cash
5 winners

Regeneron: Honorable Mention
$100 in cash
7 winners

Letta: Honorable Mention
5 winners

Honorable mention for Letta track

Devpost Achievements

Submitting to this hackathon could earn you:

Judges

Ddoski & his not-so judgy buddies.

Ddoski & his not-so judgy buddies.
Cal Hacks 12.0

Judging Criteria

  • Application
    Does the project have any feasible application in real life? Does it seem like something that someone could use or would actually have a benefit in the real world?
  • Functionality/Quality
    Is the project free of major bugs? Does it look appealing? The UI/UX doesn’t have to be absolutely perfect, but if we're having a hard time understanding the project by looking at it, there may be a problem.
  • Creativity
    Is this project unique and innovative? Is it a solution to a problem we have never seen before? A better way of doing something?
  • Technical Complexity
    The team should display a good level of knowledge in terms of the technology they’ve used in implementing their project.

Questions? Email the hackathon manager

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