---
title: "Changes to ✨ Bulk assign project members"
method: POST
path: "/api/projects/{id}/members/bulk/"
---

# Changes to ✨ Bulk assign project members

`POST /api/projects/{id}/members/bulk/`

> Every recorded change to this endpoint, newest first.
> 97 revisions in range; 1 not diffed.

## Timeline

Changed in 4 of 97 revisions.

- **2026-07-21** `d61bc77f80bc` — 3 breaking, 3 warning
- **2026-07-21** `2403338082dd` — 2 info
- **2026-07-08** `04ff286141b5` — 3 breaking, 3 warning
- **2026-04-28** `9ba357b1fdb3` — 1 info

## Changes

- **2026-07-21** `d61bc77f80bc` — 3 breaking, 3 warning
  - added `#/components/schemas/AssignableOrganizationRoleEnum` to the `roles/items/role` request property `allOf` list (media type: application/json)
  - added `#/components/schemas/AssignableOrganizationRoleEnum` to the `roles/items/role` request property `allOf` list (media type: application/x-www-form-urlencoded)
  - added `#/components/schemas/AssignableOrganizationRoleEnum` to the `roles/items/role` request property `allOf` list (media type: multipart/form-data)
  - removed `#/components/schemas/OrganizationRoleEnum` from the `roles/items/role` request property `allOf` list (media type: application/json)
  - removed `#/components/schemas/OrganizationRoleEnum` from the `roles/items/role` request property `allOf` list (media type: application/x-www-form-urlencoded)
  - removed `#/components/schemas/OrganizationRoleEnum` from the `roles/items/role` request property `allOf` list (media type: multipart/form-data)
- **2026-07-21** `2403338082dd` — 2 info
  - the response property `assignments` became required for the status `200`
  - added the required property `skipped_user_ids` to the response with the `200` status
- **2026-07-08** `04ff286141b5` — 3 breaking, 3 warning
  - added `#/components/schemas/OrganizationRoleEnum` to the `roles/items/role` request property `allOf` list (media type: application/json)
  - added `#/components/schemas/OrganizationRoleEnum` to the `roles/items/role` request property `allOf` list (media type: application/x-www-form-urlencoded)
  - added `#/components/schemas/OrganizationRoleEnum` to the `roles/items/role` request property `allOf` list (media type: multipart/form-data)
  - removed `#/components/schemas/Role9e7Enum` from the `roles/items/role` request property `allOf` list (media type: application/json)
  - removed `#/components/schemas/Role9e7Enum` from the `roles/items/role` request property `allOf` list (media type: application/x-www-form-urlencoded)
  - removed `#/components/schemas/Role9e7Enum` from the `roles/items/role` request property `allOf` list (media type: multipart/form-data)
- **2026-04-28** `9ba357b1fdb3` — 1 info
  - added the new optional `query` request parameter `user_type`

---

[Operation](https://skmtc.dev/humansignal/apis/label-studio-api/docs/api/projects/:id/members/bulk/post.md) · [API](https://skmtc.dev/humansignal/apis/label-studio-api.md) · [Page](https://skmtc.dev/humansignal/apis/label-studio-api/changes/api/projects/:id/members/bulk/post)