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AI Agents Explained: What They Are and How They Work

AI agents are autonomous systems that can reason, plan, and execute complex tasks. Learn how this emerging technology can transform business operations.

What Are AI Agents?

AI agents are software systems powered by large language models (LLMs) that can autonomously perform complex tasks. Unlike traditional automation that follows rigid rules, AI agents can:

Reason

Understand context and make logical decisions

Plan

Break complex goals into actionable steps

Learn

Adapt based on feedback and outcomes

Act

Execute tasks using available tools and APIs

Think of an AI agent as a capable assistant that you can give a goal to, and it will figure out how to accomplish it—researching, making decisions, and taking actions along the way.

How AI Agents Work

AI agents operate through a loop of perception, reasoning, and action:

1

Receive Goal

The agent receives a high-level goal: "Research competitors and create a comparison report"

2

Plan Approach

The agent breaks this into steps: identify competitors, gather data, analyse strengths/weaknesses, format report

3

Execute with Tools

The agent uses available tools: web search, document reading, data extraction, spreadsheet creation

4

Evaluate & Iterate

The agent checks its work, adjusts approach if needed, and continues until the goal is achieved

This is fundamentally different from traditional automation, where every step must be explicitly programmed. Agents can handle ambiguity and novel situations.

Types of AI Agents

AI agents come in various forms, each suited to different use cases:

Task-Specific Agents

Focused on a single type of task like research, writing, or data analysis.

Examples: Research agent, content writing agent, code review agent

Conversational Agents

Engage in dialogue to help users accomplish goals through conversation.

Examples: Customer support agents, sales assistants, onboarding helpers

Workflow Agents

Orchestrate complex multi-step processes across systems.

Examples: Process automation agents, integration agents, approval workflow agents

Multi-Agent Systems

Multiple specialised agents working together, each handling their domain.

Examples: Research team (researcher + analyst + writer), customer service team

Business Applications

AI agents are being deployed across business functions:

Sales & Marketing

  • Lead research and qualification
  • Personalised outreach drafting
  • Competitor intelligence gathering
  • Content creation and optimisation

Customer Service

  • Complex inquiry resolution
  • Multi-system ticket handling
  • Proactive customer outreach
  • Knowledge base maintenance

Operations

  • Process documentation
  • Compliance monitoring
  • Vendor evaluation
  • Report generation

Finance & Admin

  • Invoice processing and matching
  • Expense categorisation
  • Contract review assistance
  • Financial data reconciliation

Learn more about our AI agent development services.

Agents vs Traditional Automation

Understanding when to use agents vs traditional workflow automation:

AspectTraditional AutomationAI Agents
Task typeStructured, predictableUnstructured, variable
Decision makingRule-based (if/then)Reasoning-based (contextual)
Error handlingPre-programmed exceptionsAdaptive problem-solving
Setup effortLower for simple tasksHigher initial investment
MaintenanceUpdate rules manuallyLearns and adapts
Best forHigh-volume, consistent processesComplex, judgment-based tasks

For a detailed comparison, see our guide: AI Automation vs Traditional Automation

Getting Started with AI Agents

If you're ready to explore AI agents for your business:

1

Identify suitable tasks

Look for tasks that require research, synthesis, or multi-step reasoning. Good candidates involve gathering information, making recommendations, or handling varied requests.

2

Start with human oversight

Begin with agents that assist humans rather than fully autonomous systems. Have people review agent outputs before actions are taken.

3

Define clear boundaries

Establish what tools and systems the agent can access, what actions it can take, and when it should escalate to humans.

4

Measure and iterate

Track agent performance, gather feedback, and continuously refine prompts, tools, and guardrails based on real-world results.

Key Considerations

Before deploying AI agents, consider these factors:

Reliability

AI agents can make mistakes or hallucinate. Build in verification steps and human oversight for critical decisions.

Cost

Agent operations involve API calls that have costs. Monitor usage and set appropriate limits.

Security

Agents with tool access can take real actions. Implement proper access controls and audit logging.

Data Privacy

Consider what data agents can access and how it's processed. Ensure compliance with NZ Privacy Act.

Learn more

Explainability

Agents should be able to explain their reasoning. This is important for trust and debugging.

Interested in AI agents for your business?

We build custom AI agents tailored to your specific business needs. Get in touch to discuss the possibilities.