# What you can connect

> The map of the points where SupportFast connects to your website, your software and your phone system, with the page that explains each one.

Page: https://supportfast.ai/en/guide/developers/overview/ · Section: Developers · Updated on 30 October 2026

This section is for people who integrate SupportFast with other systems: developers, web agencies, IT consultants.

**Your website** — The chat, registered customers' data, events for Analytics. → **SupportFast** — Chat and voice agents, automations, contacts. → **Your systems** — Management software, CRM, e-commerce, phone system.

## The widget and its JavaScript API

The widget is the website chat. Besides the code to paste, it offers whoever develops the website:

- **the JavaScript API**, to open the chat from your own button, force the language, move the button with CSS and configure the website's Content Security Policy;
- **user data**, to pass the name, email and variables of customers signed in to the website to the chat;
- **events**, to count chat openings in Google Analytics and react from your own code.

**Who uses it**: whoever develops or maintains the website. **Where**: the code is in Chat agent › Agent profile › Share.

Read [Widget JavaScript API](https://supportfast.ai/en/guide/developers/widget-api.md) and [Passing user data](https://supportfast.ai/en/guide/developers/user-data.md).

## The webhook that starts an automation

An automation can start from an HTTP request. Your software sends a `POST` with a JSON body to a unique address, and the automation starts with that data. For example: a new order in your e-commerce store, a submitted form, an appointment in your management software. With the Webhook Response node, the automation can also reply to the caller.

**Who uses it**: whoever connects management software, e-commerce or integration tools. **Where**: in the automation's trigger, with the Webhook (API) source.

Read [Starting an automation via webhook](https://supportfast.ai/en/guide/developers/incoming-webhook.md).

## The API node

The API node calls an external service from a flow, to read or write data in your management software, CRM or database. It makes `GET`, `POST`, `PUT` and `DELETE` requests, with parameters, headers and a JSON body, and the response can be used in the following nodes. It's available in automations and in the chat agent's Playground, inside a tool's chain.

**Who uses it**: whoever knows the API of the software to connect. **Where**: in the Playground of the automation or of the chat agent.

Read [Calling an external API](https://supportfast.ai/en/guide/developers/api-calls.md).

## The end-of-call webhook

At the end of a call, the voice agent can send a JSON with the call data and the extracted data to an address of yours. If you want, it adds the recording link. Each delivery is signed with a secret key, so your server can verify that it comes from SupportFast.

**Who uses it**: whoever wants the calls in their own CRM or management software. **Where**: in the voice agent, in Agent profile › Edit Profile › Post-call, Webhook panel.

Read [End-of-call webhook](https://supportfast.ai/en/guide/developers/end-of-call-webhook.md).

## The SIP connection

If you already have a PBX or a VoIP phone carrier, you connect your number to the voice agent with a SIP line, without changing number. In SupportFast you enter the number and the SIP access; at the phone carrier, or on the PBX, you route calls to the address the console gives you.

**Who uses it**: whoever manages the PBX or the VoIP contract. **Where**: in Account › Telephony, with Add number and then Create SIP number.

Read [Connecting your PBX (SIP)](https://supportfast.ai/en/guide/telephony/sip.md).

> **Plan**
>
> The webhook that starts an automation and the API node are available on plans that include “API and webhooks”: see [Plans, quotas and usage](https://supportfast.ai/en/guide/account/plans-and-usage.md).

## See also

- [Installing the widget](https://supportfast.ai/en/guide/website/install-widget.md): The code to paste into your website, no programming needed.

- [Automations](https://supportfast.ai/en/guide/automations/overview.md): Triggers, nodes and executions, before you connect them to other systems.

- [Post-call: data, email, webhook](https://supportfast.ai/en/guide/voice-agent/post-call.md): The data the voice agent extracts from each call.