Agents are sophisticated AI systems designed to independently perform tasks on your behalf. Powered by Large Language Models (LLMs), they manage and execute workflows to achieve specific goals.

Core characteristics include:

• Autonomy: operate without direct human intervention.
• Decision-Making: use an LLM to plan and adjust workflows.
• Access to Tools: choose from tools to interact with external systems.
• Goal-Oriented: every action moves toward a defined objective.

Agents shine where rule-based automation struggles. Consider them for workflows involving:

• Complex Decision-Making: nuanced judgment or exception handling.
• Difficult-to-Maintain Rules: systems bloated with special cases.
• Heavy Reliance on Unstructured Data: interpreting language or documents.

An effective agent combines three core pieces:

1. Model: the LLM that drives reasoning.
2. Tools: APIs or functions used to take action.
3. Instructions: constraints guiding behavior.

For help crafting reusable instructions, see our Prompt Guide.

Orchestration coordinates agents to execute workflows. It can be:

• Single-Agent Systems: one model loops with tools and instructions.
• Multi-Agent Systems: specialized agents collaborate on sub-tasks.

Common multi-agent patterns include a manager delegating to workers and decentralized peers handing off tasks. For deeper workflow patterns, explore the Model Context Protocol (MCP).

Guardrails mitigate risks like data leaks or harmful output. Examples include:

• Relevance and safety classifiers
• PII filters and moderation layers
• Tool safeguards and simple rules-based protections
• Output validation to enforce brand guidelines

Human oversight helps spot failures and edge cases. Trigger intervention when agents exceed failure thresholds or attempt high-risk actions like large refunds.

With careful design, testing, and monitoring, agents become reliable teammates that amplify your capabilities.