Build an AI Agent with TypeScript

Josh York

Feb 18, 2026

Building your first voice agent in TypeScript on the Syllable SDK is quick, easy and gives you the power to scale. In this guide, we'll walk through how to spin up an intelligent agent in just a few minutes using TypeScript.

The SDK gives developers full control over the agent-building process, from defining behavior and personality to connecting live data sources and external tools.

Why Use the TypeScript SDK?

If you've explored the Syllable Console, you know how easy it is to configure agents in a no-code environment. The TypeScript SDK offers the same power, but with full developer flexibility:

• Automate agent creation and updates programmatically
• Define prompts, tools, and messages entirely in code
• Integrate seamlessly with your existing infrastructure and CI/CD pipelines
• Leverage TypeScript's type safety and modern patterns

The SDK is ideal if you're building deeply integrated systems and need the power of programmatic control. Visit the TypeScript SDK on GitHub.

Getting Started

The tutorial walks through environment setup, creating a prompt, adding a data source, defining tools, creating a message, assembling your agent, and testing. Install the SDK with npm:

npm install syllable-sdk

You can access your Syllable API key in the Syllable Console under your Profile, then API tokens.

What's Next

• Find the TypeScript Agents SDK Documentation on GitHub
• Add more tools and connect real-time systems to your agent
• Build a pipeline to programmatically manage multiple agents at scale
• Explore channel targets to give your agent a real phone number

Sign up or log in to get your API key and start building today.