AI4Eone logo
AI4Eone
The Process, Visualized

How an AI Agent Works

From input to output — watch how information flows through the agent's brain, gets remembered, and loops until the goal is done.

Input
→
LLM Brain
→
Plan
→
Tool
→
Act
↺
Memory
The Building Blocks
Six Components, Organized by Role

Every component belongs to one of three jobs: getting information in, processing it, or getting results out. Hover each card for details.

⬅ Input

Perception

The Senses

Takes in your request, documents, data streams, and live signals — everything the agent needs to understand the situation.

⚙ Processing Core

The Brain

LLM Core

The reasoning engine — reads the goal, weighs the options, and decides the next move.

Planning

Strategy

Breaks big goals into ordered steps, reflects on results, and re-plans when a step fails.

Memory

Context

Short-term memory keeps the task in focus; long-term memory recalls facts and past lessons.

Tools

Abilities

Web search, code execution, databases, and APIs — reached through standards like MCP.

Output ➡

Action

The Results

Decisions become real effects — a written answer, an edited file, an email sent, a workflow triggered.

The Process
Input → Brain → Plan → Tool → Act... and Loop

This is the heartbeat of every agent. Information flows into the brain, which consults memory, then runs the execution branch — plan the step, pick the tool, act — and the result loops back to the brain until the goal is complete.

6 Observe the result — loop back to the brain until the goal is complete
1 📥

Input

Perception
Goal, documents,
data & signals
Step 1 — Input

The agent perceives: your request comes in along with files, data, and live context from the environment. This is everything the brain will reason about.

2 🧠

LLM BRAIN

REASONS · DECIDES
Step 2 — The Brain

The LLM interprets the input and pulls context from memory. Then it kicks off the execution branch: plan the step, pick the tool, act.

↕ 💾

Memory

Context
Stores & recalls — flows both ways
Memory — Context

A two-way street with the brain: it reads past context before deciding, and writes new results after acting — so every loop is smarter than the last.

3 📋

Plan

Strategy
Break the goal
into steps
Step 3 — Plan

The brain decides the next concrete step: what needs to happen now, and what ability is required to do it.

4 🛠️

Pick Tool

Abilities
Search, code,
APIs & MCP
Step 4 — Pick a Tool

For the planned step, the agent selects the right ability: web search, code execution, a database query, or an API call through MCP.

5 ⚡

Act

Output
Execute & produce
real-world results
Step 5 — Act

The tool runs and the result lands in the real world: an answer, an edited file, an email sent. The outcome loops back to the brain to be observed.

⚙ The Execution Branch: Plan → Pick Tool → Act
Information in Reasoning Memory (both ways) Execution branch Observe & loop
1
Input — Perception
Goal, documents, data & signals come in
↓
2
LLM Brain — Reasons & decides
Consults Memory 💾 (both ways)
↓
3
Plan — Strategy
Break the goal into the next step
↓
4
Pick Tool — Abilities
Search, code, APIs & MCP
↓
5
Act — Output
Execute & produce real-world results
↺
6
Observe & Loop
Result feeds back to the brain until done
AI4Eone
In One Sentence
In. Think. Plan.
Tool. Act. Loop.

That's the agent process — the brain thinks with memory at its side, the execution branch does the work, and the loop runs until the goal is achieved.