Shefali

@ycombinator founders crash vc events all the time. just returning the favor

@0xJsum solidddd

We've raised $6.5M to kill vector databases. Every system today retrieves context the same way: vector search that stores everything as flat embeddings and returns whatever "feels" closest. Similar, sure. Relevant? Almost never. Embeddings can’t tell a Q3 renewal clause from a Q1 termination notice if the language is close enough. A friend of mine asked his AI about a contract last week, and it returned a detailed, perfectly crafted answer pulled from a completely different client’s file. Once you’re dealing with 10M+ documents, these mix-ups happen all the time. VectorDB accuracy goes to shit. We built @hydra_db for exactly this. HydraDB builds an ontology-first context graph over your data, maps relationships between entities, understands the 'why' behind documents, and tracks how information evolves over time. So when you ask about 'Apple,' it knows you mean the company you're serving as a customer. Not the fruit. Even when a vector DB's similarity score says 0.94. More below ⬇️

@contextkingceo Let’s gooooo

@haakamaujla @generalcatalyst Incredible

Announcing AgentMail's $6M Seed led by @generalcatalyst No pressure, right?

@bertgodel @perplexity_ai Hell yea

We're excited to partner with @perplexity_ai on their latest release. We were impressed with how performant their new Deep Research product was on early benchmarks and are thrilled that this work is being open sourced.

@AlexAridgides @agentmail @browser_use @hyperspell @Replit @livekit @usemoss @mastra @composio @perplexity_ai @convex woooooo!!

OMG I JUST WON THE AGENTMAIL YC HACKATHON!! Literally can’t think right now Very special thanks to the sponsors for letting me try and hack your websites (most of them were a-ok)

let’s gooo

@AI_Arav let’s goooo

F4 (@F4_Industries) helps hardware teams 10x how they redline and interpret engineering drawings. With experience from Tesla & SpaceX, F4 is building a platform that treats drawings like code—instantly validating them against GD&T standards.

Introducing @EntelligenceAI Leaderboard: World's first engineering leaderboard 🚨 Athletes have rankings, researchers have citations but developers have been largely hidden We built a real time scoreboard for engineers & teams on actual PR performance: code quality, security and impact. If you're a cracked engineering team, join the leaderboard (Link below👇)

just demoed the hackathon project at @paradigm Frontiers 2025 – it's a bit broken atm but here's the presentation: slides.geobets.xyz we'll be launching it soon so stay tuned big thanks to @sergical for helping build it @achalvs for designs @cgst for ideation @0xtanishk for smart contract tips @tkstanczak for hiring tips @gakonst for making it happen 👨🏻‍💻🫡

// welcome to the agi fight club 🥊 the world’s very first competitive ai hacking tournament, where all is fair and speed is everything <ugly code is totally welcome> think you're a cracked dev? prove it in the arena season 0 details: location > san francisco date > 26 july

#! the timer has started > prompts are loaded > waitlist is stacking up > tension is building we'll see you there in a bit ⏳ pull up -- lu.ma/jkpamu2b

@cory interning @ nfx

co-hosting Internapalooza (big STEM intern event) in San Francisco on the evening of Aug 4th. all undergrad and graduate interns are welcome. prev speakers have included: Sam Altman (OpenAI), Dylan Field (Figma), Julia Hartz (Eventbrite), Guillermo Rauch (Vercel), and more. @ reply where you are interning if you want to join!

@forwarddeploy go umesh 👏

Founders have an incredibly difficult job. Creating something from nothing is insanely hard. I try to provide more than just capital and be as useful as possible in removing barriers so founders can focus on building. It’s a privilege to be working with unapologetically ambitious founders like @weberwongwong

@mohd_raza_11 100%. and it’s now or never

@shefalisastry highly agree with embarrassing yourself. playing safe will not get you anywhere and miss out lot of opportunities. so just do it

3 things I learned from being shameless at AI startup school: 1. embarrass yourself. being a student is a cheat code bc you can pull shameless stunts and no one will bat an eye. wish I did it more in undergrad, making up for it in grad school 2. mindshare > everything. YC gave us $500 to fly to SF not for vibes, but so they’re your first call when you’re ready to build. brilliant move @ycombinator 3. what’s up with all the mullets

@sayhitospectra @blader hell yea! love to see it

@shefalisastry You have to check what @blader did, with a placard too. I mean you should see few others too. All are amazing

@apuroop_mutyala dw you’re not the only one 😂 think AI SUS increased the number of mullets in the city by 50% or smth

@shefalisastry Not me with a mullet meeting you 🤣

@TheMingjie hahah once I got used to the whole thing it became fun dw 😂 samee

@shefalisastry embarrass? Idk I felt great!!! (so nice to meet another hustler!! 😄)