---
title: "Return All Serverless Instances in One Project"
method: GET
path: "/api/atlas/v2/groups/{groupId}/serverless"
tags: ["Serverless Instances"]
deprecated: true
---

# Return All Serverless Instances in One Project

`GET /api/atlas/v2/groups/{groupId}/serverless`

> **Deprecated.**

Returns details for all serverless instances in the specified project.

This endpoint also lists Flex clusters that were created using the [Create Serverless Instance](https://www.mongodb.com/docs/atlas/reference/api-resources-spec/v2/#tag/Serverless-Instances/operation/createServerlessInstance) endpoint or former Serverless instances that have been migrated to Flex clusters, until January 15, 2026 after which this endpoint will begin returning an empty list. The endpoint will be removed entirely on January 15, 2027. Continuous backups are not supported and `serverlessContinuousBackupEnabled` will not take effect on these clusters. Please use the List Flex Clusters endpoint instead.

## Path parameters

- `groupId` string, required

## Query parameters

- `envelope` boolean
- `includeCount` boolean
- `itemsPerPage` integer
- `pageNum` integer
- `pretty` boolean

## Response `200`

OK

## Other responses

- `401` — Unauthorized.
- `403` — Forbidden.
- `404` — Not Found.
- `409` — Conflict.
- `429` — Too Many Requests.
- `500` — Internal Server Error.

---

[API](https://skmtc.dev/mongodb/apis/atlas-admin-api.md) · [All operations](https://skmtc.dev/mongodb/apis/atlas-admin-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/mongodb/atlas-admin-api/revisions/e37e8ef8429f/schema)