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Agentic RAG with LangGraph & Telegram (with Video explanation)

Mother of AI Project, Phase 1: Week 7 (Advance series)

Hey there 👋,

Welcome to lesson seven of “The Mother of AI” - Zero to RAG series, and the beginning of our Advanced Series!

The first paid blog with a Video walkthrough.

Quick recap:

A production RAG system goes beyond simple question-answering. It needs intelligence, adaptability, and accessibility.

Weeks 1–6 gave us solid infrastructure, live data pipeline, hybrid search with semantic understanding, complete LLM integration, and production monitoring with caching. Now we take the leap into intelligent agentic RAG with multi-step reasoning and conversational access through Telegram.

This week marks the beginning of our journey into AI Agents - moving from static pipelines to intelligent systems that reason, adapt, and make decisions.


Important: If interested in Code walkthrough and explanation videos (PAID)

Check below:

✅ Live walkthrough of that week’s code
✅ Deeper insights into design tradeoffs, infra, and architecture
✅ Debugging support on your implementation
✅ How to go beyond and deploy these solutions in production

Course → https://jamwithai.dev/

Use Coupon code - JMJCAWJ64E to get 30% discount.


This week’s goals

We first get a good long blog with a video to make you understand the whole blog!

  • Clone the new private Repo for advance RAG series

  • Implement agentic RAG with LangGraph for intelligent multi-step reasoning

  • Build Telegram bot for conversational AI access anywhere

  • Create adaptive retrieval with query validation and document grading

  • Add intelligent query rewriting to improve search quality

  • Deploy dual-mode Gradio interface for testing both basic and agentic RAG

  • Update Langfuse to v3 for enhanced tracing capabilities

Big picture:

We took the production RAG system from Week 6 and transformed it into an intelligent agent that thinks before it acts. Instead of blindly retrieving documents, the system now validates queries, grades document relevance, rewrites queries when needed, and adapts its strategy based on results.

The key insight: Traditional RAG is a fixed pipeline. Agentic RAG is a decision-making system that evaluates quality at each step and adjusts its approach, delivering higher-quality answers with complete transparency.

The Agent architecture now includes:

  • Intelligent orchestration layer powered by LangGraph that coordinates six specialized nodes

  • Guardrail validation to ensure queries are within scope (CS/AI/ML research)

  • Adaptive retrieval that tries multiple strategies with intelligent fallbacks

  • Document grading to verify retrieved content is actually relevant

  • Query rewriting that optimizes searches for better results

  • Multi-channel access through Telegram for conversational AI anywhere


What we built (high level)

Complete Week 7 advanced RAG system with LangGraph agentic workflow, Telegram bot, enhanced Langfuse tracing, and dual-mode Gradio interface

  • Agentic Orchestration Layer: LangGraph 1.0 workflow with state management and conditional routing

  • Intelligent Nodes: Six specialized nodes for validation, retrieval, grading, rewriting, generation, and error handling

  • Telegram Bot: Conversational AI interface with command support and rich formatting

  • Dual-Mode Gradio UI: Side-by-side comparison of basic RAG vs agentic RAG

  • Enhanced Observability: Langfuse v3 tracing with automatic span inheritance and deep insights

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