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Cover image for `echo "Hello, World!"` — the classic start to every dev journey... and also the intro to mine. 🔥
Ataur Rahman
Ataur Rahman

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`echo "Hello, World!"` — the classic start to every dev journey... and also the intro to mine. 🔥

This video might look simple — just printing a message — but guess what?
That message is coming straight from my custom tool, bound into my very own AI assistant backend.

It’s a basic tool (just echoing input) — but that’s the point.
We’re testing the foundation.
And just like that, a new journey begins. 🚀

Right now, we’ve set up:

  • ✅ Local LLMs via Ollama
  • ✅ Flow + tool binding with LangChain
  • ✅ Embeddings + search using PGVector
  • ✅ Session memory plan
  • ✅ Streaming UI — fully working and shown in the video
  • ✅ Tools bound and functional (even this echo)

We’re now diving into the MCP server — exploring advanced tool orchestration and how to scale across multiple servers.

But let’s be clear:
👉 What we’ve done so far is just the beginning.
We're still in a small zone of a big vision — and there’s a LOT left to build.

🎯 Blog series coming soon.
Maybe videos too — though I want to focus on building first.

And maybe… just maybe…
We can turn this into a bootcamp-style learning group or live workshop where we explore, test, and learn together.

I watched tons of tutorials, read docs, debugged endlessly… but never found a complete, JS-focused guide that connects everything together — or maybe I just didn’t find the one that worked for me. So, I’m making one.

But what’s more important is how we’re building it.

We’re doing everything from scratch — manually configuring each part.
Why? Because we want to understand the core.

There are definitely easier ways. We could’ve used pre-built SDKs, hosted platforms, or plug-and-play services.
But once we truly understand how everything connects — from embeddings to vector search to tool invocation — we’ll have the power to use any provider, or even build our own.

We’re not just learning tools.
We’re learning how to build our own AI brains — with control, understanding, and creativity.

Whether you're:

  • A beginner? Let’s cook together.
  • Already familiar with some of these tools? Drop advice! I’m listening.
  • Confused or stuck? Comment your question — maybe someone here can help you, or I’ll try!

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