Build advanced workflows using code and APIs

Written by Owner

Updated at August 20th, 2025

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Table of Contents

Code Webhooks Custom actions API request actions Functions Zapier Developer Platform Next steps

Zapier has thousands of apps with countless triggers and actions available. But, if you need to build more customized workflows, you can use the following advanced tools:

Code

With the Code app you can run small snippets of Python or JavaScript code in your Zaps. Use it to send custom information between apps.

To use it, you must know Python or JavaScript programming languages. Or, use the AI-powered code builder to help you write your code.

Webhooks

The Webhooks app lets you send one-way messages between apps. Webhooks automatically push new data from one app to another as it is created.

To use it, you must have some understanding of how APIs work.

Custom actions

You can build custom actions for existing, supported public apps on Zapier. You can use an app's public API to create actions that are not available by default using HTTP requests. You can reuse them in any Zap, and they’re available for any user in your Team or Enterprise account to use. You also have the option to use a code editor to refine your custom actions using TypeScript.

To use it, you must understand how APIs work or use the AI-powered builder to help you build your custom action.

API request actions

Use API request actions inside the Zap editor to make raw HTTP requests to supported public apps. Unlike webhooks, you can use it with your existing app connections to automatically set the authentication header. You can also view comprehensive API responses.

To use it, you must understand how APIs work.

Functions

The Functions app lets you run small snippets of Python code in your Zaps. It includes extra features like Python packages, secrets, and a full development environment. You can call your function from any new or existing Zap by adding a Zapier Functions action event to it.

To use it, you must know the Python programming language.

Zapier Developer Platform

The Zapier Developer Platform gives you the most advanced customization. Use it to build an entire app on Zapier for your private use or to share with other users. Choose between building in the:

Platform UI: create an app without code using API endpoint URLs. You can set any custom options your API may need, including:
- Custom URL parameters.
- HTTP headers.
- Request body items.
Platform CLI: build, collaborate, and manage your app in your local development environment. Requires programming knowledge.

To use it, you must understand how APIs work.

Next steps

For more inspiration, read: