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Priyansh Srivastava for et-si.ai

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Introducing etsi.ai - Practical and Open-Source Tools

We’re a small open-source group building useful AI tools - the kind you actually want in real ML pipelines. No bloated frameworks. No “soon” features. Just practical stuff, shipped.

Right now, we’ve released three libraries - each built around a real pain-point we’ve hit ourselves 👇

🐺 etsi-watchdog - “is my data drifting?”

Data drift is one of those problems that everyone knows exists but nobody monitors properly because most tools are either too heavy or too rigid.

etsi-watchdog fixes that.

  • Production-first monitoring
  • Static & rolling window drift detection
  • PSI / KS-Test / Wasserstein built-in
  • Isolation Forest support
  • Slack alerts
  • JSON + visual reports
  • Plug-in architecture so you can register your own drift logic

Lightweight. PyData-native. Drop-in friendly.

🔍 etsi-failprint - “why is my model failing?”

Accuracy tells you how often you fail.
Failprint tells you why.

It automatically finds failure patterns across:

  • Tabular data
  • NLP
  • Computer Vision

with:

  • auto-segmentation of weak spots
  • semantic clustering for text + images
  • meta-feature failure analysis
  • counterfactual suggestions
  • clean Markdown reports

And it’s lazy-loaded, so you only pay for the dependencies you actually use.

🌋 etsi.etna - a tiny neural-net library for structured data

Most ML tools force a choice:

simple or fast.

Etna says: why not both?

  • Rust-powered core
  • Python-first API
  • auto task detection (classification / regression)
  • auto preprocessing
  • built-in metrics
  • MLflow tracking by default

Perfect for quick experiments, teaching, and small-scale production.

🧠 Why we’re building this

We just want AI tooling that feels:

  • simple
  • transparent
  • fast
  • well-designed
  • actually usable in production

So we’re making it — in the open.

⭐ If this sounds like your vibe

Check out the libs, try them, break them, open issues, contribute, hang out.

PyPI

We’re building. And we’re having fun doing it.

More soon. 🚀

— etsi.ai

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