How to build your own AI Agent

wojciech achtelik
Wojciech Achtelik
AI Engineer Lead
June 19, 2025

How to build your own AI Agent encompasses the complete development lifecycle for creating custom autonomous intelligent systems tailored to specific business requirements and use cases. The process involves selecting appropriate foundation models, programming languages, and development frameworks based on the intended functionality and complexity. Core development steps include defining the agent’s objectives and scope, architecting the system’s cognitive components such as perception, reasoning, memory, and action modules, and implementing natural language processing capabilities for human interaction. Technical implementation requires establishing API integrations for external data sources, designing prompt engineering strategies for consistent behavior, and creating decision-making algorithms that enable autonomous task execution. Essential infrastructure components include setting up vector databases for knowledge storage, implementing authentication systems for secure access, and configuring monitoring tools for performance optimization. The development workflow encompasses testing phases for validation across various scenarios, implementing safety mechanisms to prevent unintended actions, and establishing continuous learning capabilities for adaptive improvement. Deployment considerations include scalability planning, compliance with data privacy regulations, and integration with existing business systems.