Karthik Nadar

I love building things from scratch, especially developer tools and AI workflows that I end up using myself. I’m the type who always asks “how does this actually work behind the scenes?” and then spends nights hacking until I figure it out. Most of my projects come from that curiosity.

Projects i’m proud of
1) Mini LangSmith POC [Kyra]
Back in May, I used LangSmith on a project and it completely changed how I looked at AI apps — there’s so much more than just “call the model and get text back.” So I built a small version of it in Next.js + Express, along with a Node.js SDK. It taught me a ton about tracing, observability, and how developers debug AI apps.
SDK: https://www.npmjs.com/package/kyra-observability-sdk
Demo: https://kitkat-ten.vercel.app/

2) DataShorts :Chat With Your Database (Postgres)
One of my favorite builds. Lets you chat with your Postgres database in natural language and get results in real time. The tricky part was designing the memory engine — I’ve rebuilt it 5 times to handle edge cases better.
Site: https://datashorts.com/
Fun fact: finished 4th out of 250 teams at a hackathon with this.
Current challenges I’m working on:
Spelling sensitivity,if you mistype a name, you get “nothing found”, I’m exploring Cursor-like fuzzy matching.
Better table relations → moving from embeddings-only to experimenting with graph DBs like Neo4j.
This is still one of the most exciting problem spaces I’m deep into.

3) GitHub PR Review Bot [KitKat]
A bot that automatically reviews pull requests with AI-generated comments. Super lightweight but useful for dev workflows.
Demo: https://tracker-4kle.vercel.app/

4) PlumAI — Mini Perplexity
Loved Perplexity when it came out, so I tried building a mini version focusing only on the search workflow. It was my way to understand agentic workflows bettwe.
Demo: https://plum-rose.vercel.app/

5. normalmemory-memory layer for ai

• absolutely loved supermemory and mem0,so tried building my own version of it from scratch.
  Demo: [ https://selfless-fulfillment-production.up.railway.app ]

What Drives Me
*I thrive on curiosity and problem-solving. For me, building is less about shipping the perfect app and more about figuring out how things actually work under the hood, breaking them, and then improving them. That’s why I keep iterating (like the DataShorts engine), cloning ideas of the existing developer tools.

At the end of the day, I’m happiest when I’m in builder mode ,exploring, experimenting, and pushing ideas from “this should exist” to “here’s the link, try it out.”*

you can check out a lot more about me from my portfolio:
https://www.notion.so/Gallery-of-Trying-bc7cab73999f4d09b559005c966cee5d