How AI Agents Work: Key Components and Technologies Explained

Discover the core components behind AI agents, from language models to integrations. Mayfly Ventures breaks down how these intelligent systems operate to automate and optimize workflows.

AI agents are quickly becoming the backbone of the next wave of digital transformation, promising to automate tasks, solve inefficiencies, and redefine how businesses operate. But how exactly do these intelligent systems work? What makes them capable of executing complex tasks autonomously?

In this article, we’ll break down the core components and technologies that power AI agents, giving you a clear understanding of how they function and why they’re such a game-changer for industries worldwide.

What Are AI Agents? A Quick Recap

AI agents are software programs designed to work autonomously, learn from interactions, and improve over time. They don’t just answer questions (like ChatGPT); they execute tasks, interact with tools, and make decisions with minimal human intervention.

For example, a customer service AI agent doesn’t just provide answers—it can access a CRM system, resolve customer issues, and even schedule follow-ups automatically.

Key Components of AI Agents

1. Language Models (LLMs)

What are Large Language Models (LLMs) - AI.tificial

At the heart of most AI agents lies a Language Model (LLM), which serves as the brain for processing and generating human-like text. These models are trained on vast datasets and are capable of understanding context, recognizing patterns, and providing meaningful outputs.

Popular LLMs include:

  • OpenAI GPT-4: Versatile and widely used for text-based applications.
  • Google Bard: Focused on contextual understanding and dynamic responses.
  • Microsoft Azure OpenAI: Great for enterprise-grade applications and seamless integration with Microsoft tools.

How It Works:

When a user inputs a query or task, the LLM interprets the request, predicts the best response, and generates an output. For AI agents, the LLM acts as the decision-making engine, guiding the agent’s actions.

2. Task Execution Frameworks

Unlike traditional software, AI agents are designed to take action. They don’t just provide information—they execute tasks based on their goals.

Key Features:

  • Autonomous Goal Setting: The agent sets sub-goals required to accomplish its primary task.
  • Action Planning: It determines the sequence of actions needed to achieve its objective.
  • Error Handling: AI agents adapt when obstacles arise, adjusting their plans dynamically.

For instance, an AI sales agent might:

  1. Gather prospect data from a CRM.
  2. Craft a personalized email.
  3. Schedule a follow-up meeting.

All of this is done autonomously without human oversight.

3. Integrations with External Tools

One of the defining features of AI agents is their ability to integrate with external software tools. This allows them to operate across systems seamlessly and carry out tasks.

Examples of Integrations:

  • CRM Systems: For managing customer interactions (e.g., Salesforce, HubSpot).
  • Calendars: To book meetings or schedule reminders.
  • Accounting Tools: For automating invoicing or expense tracking.

Integration is usually achieved through APIs (Application Programming Interfaces), which enable the agent to send and receive data between systems.

4. Training Data and Domain Expertise

AI agents rely on training data to specialize in specific tasks or industries. While general-purpose agents like ChatGPT can handle a wide range of queries, vertical AI agents are trained with domain-specific data for greater precision and relevance.

How It Works:

  1. Initial Training: The AI model is trained on a general dataset (e.g., books, articles, code).
  2. Fine-Tuning: The model is further trained on industry-specific data, such as HR processes, medical records, or financial reports.
  3. Continuous Learning: Over time, the agent improves by learning from real-world interactions and feedback.

For example, Fairgo’s HR AI agent is fine-tuned to understand the nuances of job screening and recruitment, making it far more effective than a general-purpose tool.

5. Reinforcement Learning

Reinforcement Learning (RL) is a technique that allows AI agents to improve their performance over time through feedback and trial-and-error.

How It Works:

  • The agent performs an action.
  • It receives feedback (positive or negative) based on the outcome.
  • The agent adjusts its behavior to maximize positive outcomes in the future.

This iterative process ensures that AI agents become smarter and more efficient the more they’re used.

6. User Interface (UI) and Interaction

While much of an AI agent’s work happens in the background, user interaction is a critical component. A well-designed UI ensures the agent is accessible and easy to use.

Common interaction methods include:

  • Chat Interfaces: Similar to ChatGPT, where users input commands or ask questions.
  • Dashboards: Visual interfaces for monitoring tasks, setting goals, and reviewing results.
  • Voice Commands: Integration with smart assistants like Alexa or Siri for hands-free operation.

A great UI not only enhances user experience but also builds trust by providing transparency into the agent’s actions.

Key Technologies Powering AI Agents

1. Natural Language Processing (NLP)

Effektive NLP-Tools für die Verarbeitung natürlicher Sprache

NLP enables AI agents to understand and process human language, making it possible for them to interpret queries, analyze context, and generate responses.

2. Machine Learning (ML)

ML algorithms allow agents to learn patterns and improve performance over time without explicit programming.

3. APIs

APIs are the glue that connects AI agents with external tools, enabling them to execute tasks across platforms seamlessly.

4. No-Code and Low-Code Platforms

Platforms like Bubble.io and Flutterflow have democratized AI agent development, making it accessible to non-technical founders.

The Future of AI Agents

AI agents are still in their early stages, but their potential is undeniable. As technologies like LLMs, reinforcement learning, and integrations become more sophisticated, AI agents will evolve from supporting roles to indispensable business tools.

From healthcare to hospitality, the industries that embrace AI agents today will lead the charge in efficiency, innovation, and growth tomorrow.

If you’re ready to build your own AI agent, Mayfly Ventures can help you turn your idea into reality with cost-effective, scalable solutions. Let’s chat.

Co-building disruptive AI Agents with industry insiders


AI Agents are set to completely overhaul how industries operate, creating efficiency unlocks well beyond using ChatGPT. We combine our deep expertise in building disruptive AI Agent ventures with industry insiders who see opportunity.

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The Mayfly Approach

It's easy to build an AI agent. We build globally scalable businesses.

We pair our venture building expertise with your industry insights to create ground breaking companies.

We define key product features which unlock immense efficiency, help to craft a viable business model which addresses a sizable market which can be captured by a robust GTM strategy. We then plug you into our investor network to unlock your next stage of growth

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We design your Go-To-Market strategy which consists of sending the right message, to the right person at the right time in the right way to onboard early adopters to gain insights from.

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Here we define the metrics you should obsess over, create strong feedback mechanisms to collect user feedback to systematically iterate towards product-market fit.

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Vertical AI Agents Could Be 10X Bigger Than SaaS

In the 1980s and 90s, boxed software became a popular way to distribute software, whether it was gaming software, multimedia applications, or office tools. Companies like Microsoft, Adobe, and Corel rose significantly on the back of selling boxed software to millions of consumers and businesses.

In the 2000s, cloud computing and SaaS began their meteoric rise. Digital downloads, cloud-based storage, and computing simplified the process of purchasing and using software. No longer was there a need to buy a physical CD-ROM or transfer files via USB—you could access software within a few clicks.

Microsoft Office 365, for example, eliminated the need for local installation, while companies like Hubspot, Zendesk, Atlassian, and Adobe Creative Cloud revolutionized their respective industries. Today, there are approximately 337 SaaS unicorns, and this number is rapidly growing.

The next major evolution of software is AI Agents which essentially allows companies to have the software and for the software to run itself. This will provide immense time and cost savings for companies which is why many are excited about the AI Agent future.

Mark Zuckerberg,
Facebook

"I think we're going to live in a world where there are 100's of billions of AI agents. Eventually there will be more AI agents than people in the world."

Diana Hu, YC Partner

"The bull case for AI agents to be bigger than Saas, is SaaS still needs people to operate the software. The argument here is with AI agents you don't just need to replace the software, it's going to eat the payroll."

Satya Nadella,
Microsoft CEO

"AI agents will become the primary way we interact with computers in the future. They will be able to understand our needs and preferences, and proactively help us with tasks and decision making."

Bill Gates,
Microsoft

"Agents are not only going to change how everyone interacts with computers. They’re also going to upend the software industry, bringing about the biggest revolution in computing since we went from typing commands to tapping on icons."

Jared Friedman,
YC Partner

"Vertical AI Agents Could Be 10X Bigger Than SaaS. Every SaaS company build some software which a group of people use. The vertical AI equivalent will be the software plus the people."

Dhamesh Shah,
Hubspot CTO

"Last year was all about chat. The way the world looks soon is that we will have hybrid teams that consists of humans and consists of AI agents."

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