Functions | Voiceflow

How do Functions work?

Built by developers, used by designers

Functions allow your development team to create a custom integration that can be reused in the design by the designer without touching any code.

Train your AI agent on your data, giving it the ability to respond more accurately and perform tasks.

Functions supports fetch requests. Meaning you can send and receive data from tools in your techstack.

Use Javascript to define different exit paths, output variables, and even render cards, carousels, and debug messages in Voiceflow.

Your designer can access your function like a step on the canvas. They don’t need to touch the code. Just map the input and output variables.

What can you build?

Create a Function for any use case

Integrations, automations, analytics, you name it.

Databases

Pull customer information from a database like Snowflake

Support Teams

Create tickets for your support team in Zendesk

CRMs

Update prospect information in Salesforce

E-commerce

Create an order in Shopify or your Ecommerce Solution

Bring your own LLM

Send a question to your own AI model

Marketing

Add a contact to a new marketing campaign in Hubspot

Featured functions

Explore our pre-built Functions

Browse Functions

Connect to GPT-o1

Use Open AI’s latest model with a Voiceflow function. GPT-o1 improved logic and reasoning. Start building today!

Airtable: Search database

This function is able to search an item in an Airtable database and return the information in matching rows. This outputs the API response body directly.

Create a Zendesk ticket

Mixpanel: Track Event

Function to create tracking of a particular event in Mixpanel

OpenAI Assistants API

Built by community member w.williams, this function uses the OpenAI assistants API with threads to send and retrieve messages. This function will create a new thread if no existing thread exists or add messages to an existing threadID if provided.

Connect to GPT-4o

Use Open AI’s latest model with a Voiceflow function. GPT-4o 50% cheaper, twice as fast and does better on a variety of tasks. Start building today!

Send Question to Perplexity

Send a question to Perplexity's AI models. This supports pplx-7b-online and pplx-70b-online.

Generate Voice Responses via ElevenLabs API

Retrieve voice responses and audio data from ElevenLabs using text inputs (voice projects only).

Send a SMS message via Twilio

This function sends an SMS message to a specified phone number using Twilio's messaging service.

Send an Analytics Event to Segment

Track agent interactions and send to Segment for analysis.

Build your own

Custom integrations for any use case.

Use functions to create integrations with any tool in your tech stack. Build once, reuse as many times as you want.

Go to docs

Build reusable integrations with Functions