Continuously turn PDFsinto structured & fresh context for AI

Only process the delta, at any scale, ultra-performant, production-ready at day 0.

🔥 Hot examples, fork & let's go!

Real-time codebase indexing

Transform codebase into structured data incrementally for coding and code review agents

Real-time knowledge graph for meeting notes

Transform meeting notes into structured data incrementally for knowledge graph

Real-time hacker news trending topics detector

Transform hacker news into structured data incrementally for trending topics detector

How does CocoIndex work

You declare a few lines of Python. We do everything else.
CocoIndex Architecture Diagram

Built for reliable, autonomous agents

Data Change
Don't need to think about it. The framework handles it for you.
Just declare your transformation logic
Code Change
Target store already connected to live agents?
No worries, only changed code gets rerun, schema gets auto evolved.
Minimalistic data engineering - No index swap, no change handling, no record manipulation - we do it all for you.

React for data engineering - a persistent-state-driven model

The engine keeps the target in sync with the latest source data + code, across long time horizon.

It achieves updates efficiently – keeps latency and cost low by incrementally computing only what has changed.
Your code is as simple as the one-off processing version.
  • Transforms the input data
  • Declares desired state for target
CocoIndex execution workflow

What's going on with my data?

We've got it covered! Step by step understand what the data looks like - think of it as real-time rendering on the browser when you code applications!
CocoInsight

Vibing?

Vibe coding native design. Data pipeline ready in 5 min.
Vibing

️ Loved by builders

I'm in love with CocoIndex. ❤️ It's a very mature project — with incredible optimizations like incremental processing, parallel chunking, and maximum efficiency built right in. These are hard to design and maintain, yet they just work out of the box.


I'm inspired to learn Rust because I want to contribute to CocoIndex and Zed. Both represent the best of engineering excellence and community spirit.


And honestly — CocoIndex has one of the most responsible, thoughtful communities I've seen.

Shivansh Subramanian, Startup Founder