---
title: "Create new calling extension settings for a specific app."
method: POST
path: "/crm/v3/extensions/calling/{appId}/settings"
tags: ["Basic"]
---

# Create new calling extension settings for a specific app.

`POST /crm/v3/extensions/calling/{appId}/settings`

Create new settings for the calling extension associated with the specified appId.

## Path parameters

- `appId` integer, required

## Request body

- SettingsRequest
  - `height` integer, required — Specifies the height of the calling extension interface.
  - `isReady` boolean, required — Indicates if the calling extension is ready for use.
  - `name` string, required — The name of the calling extension.
  - `supportsCustomObjects` boolean, required — Indicates if the calling extension supports custom objects.
  - `supportsInboundCalling` boolean, required — Indicates if the calling extension supports inbound calling.
  - `url` string, required — The URL associated with the calling extension.
  - `usesCallingWindow` boolean, required — Indicates if the calling extension uses a separate calling window.
  - `usesRemote` boolean, required — Indicates if the calling extension uses remote services.
  - `width` integer, required — Specifies the width of the calling extension interface.

## Response `200`

successful operation

- SettingsResponse
  - `createdAt` string, date-time, required — The date and time when the calling extension settings were created.
  - `height` integer, required — The height of the calling extension interface.
  - `isReady` boolean, required — Specifies whether the calling extension settings are ready for use.
  - `name` string, required — The name of the calling extension.
  - `supportsCustomObjects` boolean, required — Indicates if the calling extension supports custom objects.
  - `supportsInboundCalling` boolean, required — Indicates if the calling extension supports inbound calling.
  - `updatedAt` string, date-time, required — The date and time when the calling extension settings were last updated.
  - `url` string, required — The URL associated with the calling extension.
  - `usesCallingWindow` boolean, required — Specifies if the calling extension uses a dedicated calling window.
  - `usesRemote` boolean, required — Indicates if the calling extension uses a remote service.
  - `width` integer, required — The width of the calling extension interface.

## Other responses

- `default` — An error occurred.

## Changes

- **2026-09-21** (v3) `d46fae226f7c` — 2 info
  - the endpoint scheme security `developer_hapikey` was added to the API
  - the endpoint scheme security `oauth2` was removed from the API
- **2026-07-13** (v3) `c718e7e49476` — 1 info
  - endpoint added
- **2026-07-13** (v3) `5defff6b9fd1` — 1 breaking
  - api path removed without deprecation
- **2026-07-13** (v3) `43b228cfd340` — 1 breaking
  - api path removed without deprecation
- **2026-05-04** (v3) `1508278918e2` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/hubspot/apis/crm-calling-extensions/changes/crm/v3/extensions/calling/:appId/settings/post.md)

---

[API](https://skmtc.dev/hubspot/apis/crm-calling-extensions.md) · [All operations](https://skmtc.dev/hubspot/apis/crm-calling-extensions/llms.txt) · [OpenAPI document](https://skmtc.dev/hubspot/apis/crm-calling-extensions/revisions/d46fae226f7c?raw)