Agent Architecture & Fundamentals
What is agentic AI, how does the agentic loop work, and what changed from generative to agentic paradigms.
Over 10 years we help companies reach their financial and branding goals. Engitech is a values-driven technology agency dedicated.
411 University St, Seattle, USA
engitech@oceanthemes.net
+1 -800-456-478-23
Command Center for Autonomous AI Systems
Agentic AI systems operate autonomously. They perceive their environment, set goals, plan multi-step actions, and execute with minimal human intervention. Unlike generative AI (reactive, prompt-dependent), agentic systems are proactive. They decompose objectives into sub-tasks, invoke external tools, maintain persistent memory, and adapt in real time. This hub covers how to understand, build, secure, and govern them.
AI systems that operate autonomously, perceive their environment, set goals, and execute multi-step plans without waiting for human prompts. Where a generative model asks “what should I create?”, an agentic system asks “what actions must I take to achieve this goal?”
Generative AI creates content on demand. Agentic AI executes goals autonomously. Here's how they compare across six operational dimensions.
The core operating cycle of every AI agent. Each cycle’s outputs feed the next, enabling self-correction and continuous improvement.
Trace how AI agents think, choose architecture patterns, and master the agentic loop
Select a scenario and press Play to watch an agent think.
The agentic loop stays the same — but the flow between components changes based on the architecture pattern. Select a pattern to see how it reshapes the loop.
Loading question...
Every agent — regardless of framework or pattern — runs on these four components. Expand each to explore real implementations, framework support, and threat surfaces.
Perception is the agent's input layer — it receives user messages, system events, tool outputs, and environmental signals, then parses them into a structured representation the reasoning engine can process. This includes prompt construction, context window management, and multimodal input handling (text, images, audio, structured data).
Reasoning is the agent's cognitive core — it interprets perceived context, formulates plans, selects tools, and decides what action to take next. This is where chain-of-thought prompting, goal decomposition, and decision trees operate. The reasoning engine determines whether to act, ask for clarification, delegate to another agent, or terminate.
Memory gives agents persistence across interactions and within long-running tasks. Short-term memory holds the current conversation and scratchpad. Long-term memory stores learned facts, user preferences, and past outcomes. Episodic memory records specific interaction histories for retrieval. Without memory, every agent invocation starts from zero.
Action is where the agent affects the real world — calling APIs, executing code, sending messages, modifying databases, or generating outputs. This is what separates an agent from a chatbot: the ability to do things, not just say things. Action execution includes tool invocation via function calling or MCP, output formatting, and result validation.
What is agentic AI, how does the agentic loop work, and what changed from generative to agentic paradigms.
Frameworks compared (LangChain, LangGraph, CrewAI, AutoGen), MCP deep dives, and cloud platforms (AWS Bedrock, Google ADK, Azure AI Agent Service).
15 OWASP ASI threat categories, MITRE ATLAS adversary tactics, and CSA MAESTRO layer-based threat modeling for autonomous agent systems.
NIST AI RMF (Govern, Map, Measure, Manage), ISO 42001, EU AI Act high-risk classification, and Behavioral Bill of Materials (BBOM).
5-question intake configures your deployment context. 8 levels of real agent architecture decisions. Each choice builds a live diagram. Scoring is context-adaptive: enterprise healthcare scores differently than startup prototyping. Output is a personalized deployment blueprint and printable certification.
Three agentic-specific security frameworks. The focus shifts from data protection to identity and access control.
Agents operate as autonomous actors using Non-Human Identities (NHIs) with inherited permissions. OWASP ASI identifies 15 threat categories including memory poisoning, tool misuse, privilege compromise, and cascading hallucinations. These risks don’t exist in traditional LLM deployments.
Six production-grade frameworks for building and orchestrating agentic systems. Different strengths for different deployment contexts.