Function Calling and Tool Use with OpenAI: Developer Guide

Function calling transforms LLMs from text generators into application backends that query databases, call APIs, and execute business logic. This course teaches the OpenAI tools API end to end — from JSON schema design to multi-tool orchestration in production.

About the Course

Function Calling and Tool Use with OpenAI is available on Pluralsight and is designed for intermediate-level learners (38m). Implement function calling and tool use patterns with OpenAI APIs for production applications.

Who This Course Is For

• Backend developers building AI-powered features
• Full-stack engineers integrating ChatGPT or Azure OpenAI into apps
• Architects designing tool registries for agent systems

What You'll Learn

• Tools vs functions API evolution and current best practices
• Designing JSON schemas models can reliably populate
• Parallel vs sequential tool calls and handling model hesitations
• Error handling when tools fail or return unexpected data
• Combining function calling with streaming and structured outputs

Hands-On Labs and Practice

Build a weather assistant, database query agent, and multi-step booking workflow using the OpenAI SDK with real API integrations.

Prerequisites

Python or Node.js development experience. Basic REST API knowledge required.

Career and Certification Value

Tool use is foundational for AI application development. These skills apply across OpenAI, Azure OpenAI, and compatible open-source stacks.

How to Get the Most from This Course

• Keep tool descriptions explicit — the model chooses tools based on your wording
• Validate all model-generated arguments server-side before execution
• Start with one tool, prove reliability, then expand the registry incrementally

Recommended Next Steps

After completing this course, browse related courses in the same learning path on CodeWithPraveen. Combine structured video training with free YouTube walkthroughs for topics you want to reinforce.

If your organization provides Udemy Business or Pluralsight access, enroll through your company portal and track progress toward your team's cloud or AI upskilling goals.

Final Thoughts

Function Calling and Tool Use with OpenAI reflects the lab-driven, engineer-first approach I use across all CodeWithPraveen training — practical scenarios, real tools, and skills you can apply on Monday morning. Start the course, follow along with every exercise, and reach out via the contact page if you have questions about how it fits your certification or career path.