---
title: "Add memberships"
method: PUT
path: "/crm/lists/2026-09/{listId}/memberships/add-from/{sourceListId}"
tags: ["Basic"]
---

# Add memberships

`PUT /crm/lists/2026-09/{listId}/memberships/add-from/{sourceListId}`

## Request

- Base URL: `https://api.hubapi.com`
- URL: `https://api.hubapi.com/crm/lists/2026-09/{listId}/memberships/add-from/{sourceListId}`
- Auth: one of:
  - OAuth 2
    - Authorization code: `https://app.hubspot.com/oauth/authorize`
    - Token URL: `https://api.hubapi.com/oauth/v1/token` scopes: `crm.lists.write`, `crm.segments.read`
  - OAuth 2
    - Authorization code: `https://app.hubspot.com/oauth/authorize`
    - Token URL: `https://api.hubapi.com/oauth/v1/token` scopes: `cms.membership.access_groups.write`, `crm.lists.read`
  - OAuth 2
    - Authorization code: `https://app.hubspot.com/oauth/authorize`
    - Token URL: `https://api.hubapi.com/oauth/v1/token` scopes: `crm.segments.read`, `crm.segments.write`
  - OAuth 2
    - Authorization code: `https://app.hubspot.com/oauth/authorize`
    - Token URL: `https://api.hubapi.com/oauth/v1/token` scopes: `crm.lists.read`, `crm.segments.write`
  - OAuth 2
    - Authorization code: `https://app.hubspot.com/oauth/authorize`
    - Token URL: `https://api.hubapi.com/oauth/v1/token` scopes: `crm.lists.read`, `crm.lists.write`
  - OAuth 2
    - Authorization code: `https://app.hubspot.com/oauth/authorize`
    - Token URL: `https://api.hubapi.com/oauth/v1/token` scopes: `cms.membership.access_groups.write`, `crm.segments.read`

Add memberships to a specified list from another source list. This operation is useful for consolidating list memberships by transferring members from one list to another. The endpoint does not return any content upon successful execution.

## Path parameters

- `listId` string, required
- `sourceListId` string, required

## Response `204`

No content

## Other responses

- `default`: An error occurred.

## Changes

- **2026-10-10** (2026-09) `e1dd745172d1`: 2 info
  - the security scope `crm.lists.write` was added to the endpoint's security scheme `oauth2`
  - the security scope `cms.membership.access_groups.write` was removed from the endpoint's security scheme `oauth2`
- **2026-09-07** (2026-09) `6d0e6dc36ca0`: 2 info
  - the security scope `crm.lists.write` was added to the endpoint's security scheme `oauth2`
  - the security scope `cms.membership.access_groups.write` was removed from the endpoint's security scheme `oauth2`

[Operation history](https://skmtc.dev/hubspot/apis/crm-lists/changes/crm/lists/2026-09/:listId/memberships/add-from/:sourceListId/put.md)

---

[API](https://skmtc.dev/hubspot/apis/crm-lists.md) - [All operations](https://skmtc.dev/hubspot/apis/crm-lists/llms.txt) - [OpenAPI document](https://skmtc.dev/hubspot/apis/crm-lists/revisions/e1dd745172d1?raw)