Widgets in Workgroups and Projects: Overview of Placements

If you are developing integrations for Bitrix24 using AI tools (Codex, Claude Code, Cursor), connect to the MCP server so that the assistant can utilize the official REST documentation.

Placements add the application interface inside a workgroup or project: an item in the group menu, an item in the extensions menu, or a button in the automation rules designer.

All three placements of the section work in the context of a single group and require the sonet_group scope. A project is a group with extended capabilities, so the placements are displayed both in groups and in projects.

To register a widget, use the placement.bind method and pass the required code in the PLACEMENT parameter.

Quick navigation: all placements

How to Choose a Placement

Choose a placement by the task your application solves:

The rendering location depends on the interface version. The classic view currently runs in most Bitrix24 accounts, while the new Projects AI view is being rolled out gradually. Projects AI has no extensions menu, so the SONET_GROUP_TOOLBAR item will not appear there. If your application needs an item in the group in both interface versions, use SONET_GROUP_DETAIL_TAB.

How to Get Started

  1. Choose a placement for your scenario.
  2. Register the handler with the placement.bind method and pass the code in the PLACEMENT parameter. The method is available to an administrator only and requires the application context: a placement cannot be bound with a webhook.
  3. Complete the application installation. Until then, the widget is not displayed in the interface.
  4. Open the workgroup and call the widget. Where exactly the item is located is described on each placement page in the "Where to Find It in the Interface" section.
  5. Parse PLACEMENT_OPTIONS in the handler — it carries the call context: the workgroup identifier or the address of the page the widget was opened from.

What the Handler Receives

All placements of the section pass the same set of standard parameters to the handler.

Parameters in the Handler URL Query String

Parameter
type

Description

DOMAIN*
string

The Bitrix24 address where the widget handler was invoked

PROTOCOL*
string

Secure or non-secure HTTP protocol:

  • 0 - HTTP
  • 1 - HTTPS

LANG*
string

The user interface language of Bitrix24 that invoked the widget. You can localize the interface language in your widget based on this value

APP_SID*
string

Application session identifier. Bitrix24 generates a new one each time the widget is rendered and uses it to link the js library with the application environment

Parameters in the POST Request Body

Parameter
type

Description

AUTH_ID
string

Authorization token OAuth 2 issued for the user who invoked the widget. Can be used for REST API calls on behalf of this user

AUTH_EXPIRES
integer

Time in seconds after which the authorization token will become invalid

REFRESH_ID
string

Refresh token OAuth 2 issued for the user who invoked the widget. Can be used to refresh the authorization token on behalf of this user

SERVER_ENDPOINT*
string

Address of the Bitrix24 authorization server needed to refresh OAuth 2 tokens

APPLICATION_TOKEN*
string

Application token. The same value is passed in the application_token parameter when event handlers are invoked. The widget handler can use it to verify that the request came from Bitrix24

APPLICATION_SCOPE*
string

List of scopes granted to the application, separated by commas. Shows which REST API methods are available with the authorization token received

member_id*
string

Unique string identifier of Bitrix24 where the widget handler was invoked.

status
string

Type of application that registered the handler for this widget. Accepts values:

  • L - local application
  • F - free mass-market application
  • D - demo version of a mass-market application
  • T - trial version of a mass-market application, time-limited
  • P - paid mass-market application

PLACEMENT*
string

The placement code. You can use the same handler URL for all your widgets. The value that Bitrix24 will report in the PLACEMENT parameter will help determine from which specific placement your handler was invoked in each case

PLACEMENT_OPTIONS
string

Additional data in the form of a JSON string that defines the context of the widget execution. For example, this could be an array containing the numeric identifier of the CRM object in the detail form where the widget handler was invoked, etc. The PLACEMENT_OPTIONS parameter, along with the PLACEMENT parameter, allows you to accurately determine for which specific placement and object the widget handler was invoked

Bitrix24 adds a URI key to PLACEMENT_OPTIONS — the path with the query string of the page from which the widget was opened. It arrives for any placement, along with the keys of that placement itself. The key is absent if the browser did not send the Referer header or if the widget was opened from a page on a different domain.

How to Parse the Call Context

PLACEMENT_OPTIONS arrives as a JSON string, not as an array: parse it on the handler side before use. The set of keys is specific to each placement and is described in the PLACEMENT_OPTIONS section of this page.

$placement = $_POST['PLACEMENT'] ?? '';
        $options = json_decode($_POST['PLACEMENT_OPTIONS'] ?? '{}', true);
        
options = json.loads(request.form.get("PLACEMENT_OPTIONS", "{}") or "{}")
        

In B24JsSDK, there is no need to parse the string: the $b24.placement.options property returns a ready object, and $b24.placement.placement returns the placement code.

What the Handler Must Return

The handler responds with a regular HTML page — Bitrix24 displays it in a frame in place of the widget. The page must allow embedding: if the application server sends the X-Frame-Options or Content-Security-Policy headers that prohibit framing, an empty area remains in place of the widget. How to fix it is described in the article Site Does Not Allow Connection.

PLACEMENT_OPTIONS

The PLACEMENT_OPTIONS value is passed as a JSON string with the call context. The universal URI key arrives for every placement, while the set of the remaining keys is specific to each placement.

Placement

Own Keys

What Is Passed

SONET_GROUP_DETAIL_TAB

GROUP_ID

Identifier of the group whose menu the widget is opened from

SONET_GROUP_TOOLBAR

none

The group identifier can be taken from the path in URI

SONET_GROUP_ROBOT_DESIGNER_TOOLBAR

GROUP_ID

Identifier of the group whose automation the user is configuring

Connection with Other Objects

Workgroup. The GROUP_ID identifier indicates which group the handler was called for. Workgroup data is returned by the sonet_group.get method.

Group tasks. The SONET_GROUP_ROBOT_DESIGNER_TOOLBAR placement is called from the task automation settings. Data of the tasks themselves is returned by the methods of the tasks section.

Call page. The universal URI key contains the path of the Bitrix24 page the widget was opened from. For SONET_GROUP_TOOLBAR it is the only source of the group identifier: in the path /workgroups/group/10/tasks/ the identifier is 10.

Common Mistakes

Mistake

Solution

placement.bind returns Application context required

Register the placement on behalf of an application. A placement cannot be bound with a webhook

The widget is registered but does not appear in the interface

Complete the application installation and reload the page

The SONET_GROUP_TOOLBAR item does not appear in the group

The Projects AI interface has no extensions menu, and the placement has no rendering location there. Use SONET_GROUP_DETAIL_TAB

The handler does not find GROUP_ID

SONET_GROUP_TOOLBAR has no keys of its own. Take the identifier from the path in URI

The item does not appear in the group tasks

Check the code: the menu and the automation rules in the tasks section are handled by TASK_GROUP_LIST_TOOLBAR and TASK_ROBOT_DESIGNER_TOOLBAR, which require the task scope

Overview of Placements

Scope: placement, sonet_group

Placement

When to Use

SONET_GROUP_DETAIL_TAB

Menu item of a workgroup or project

SONET_GROUP_TOOLBAR

Extensions menu item of a workgroup or project

SONET_GROUP_ROBOT_DESIGNER_TOOLBAR

Button in the workgroup automation rules designer

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