Agentic AI
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TutorialBuild a RAG System That Knows When It Doesn't Know
A practical AI engineering tutorial on building a retrieval-augmented generation system with semantic search, confidence checks, grounded answers, and a simple evaluation layer.
Rodriquez Allen·Oct 2, 2026·8 min
TutorialBuild It Yourself · Agentic AIStop Eyeballing Your Agent's Answers. A 100-Line Eval Harness Catches the Regressions You Miss.
Every agent builder hand-tests a few prompts and calls it evaluation. This tutorial builds a 100-line Python harness with a fixed case set, runs it against two versions of a mock agent, and catches a regression that eyeballing would have missed.
Ibrahim Denis Fofanah·Sep 27, 2026·7 min
TutorialCode-Along · LangGraph · Multi-AgentBuilding Multi-Agent Pipelines with LangGraph: A Practical Guide
LangChain now recommends the tool-based supervisor over create_supervisor. Here's the pattern to build, the three context decisions that decide if it works, and published benchmarks on which architecture actually costs less.
Ibrahim Denis Fofanah·Feb 25, 2026·6 min