# Return One Serverless Instance from One Project **GET /api/atlas/v2/groups/{groupId}/serverless/{name}** Returns details for one serverless instance in the specified project. To use this resource, the requesting Service Account or API Key must have the Project Read Only role. This API can also be used on Flex clusters that were created with the [createServerlessInstance](https://www.mongodb.com/zh-cn/docs/atlas/reference/api-resources-spec/v2/#tag/Serverless-Instances/operation/createServerlessInstance) endpoint or Flex clusters that were migrated from Serverless instances. Continuous backups are not supported and serverlessContinuousBackupEnabled will not take effect on these clusters. This endpoint will be sunset in January 2026. Please use the getFlexCluster endpoint instead. [getFlexCluster](https://www.mongodb.com/zh-cn/docs/atlas/reference/api-resources-spec/v2/#tag/Flex-Clusters/operation/getFlexCluster) ## Servers - https://cloud.mongodb.com: https://cloud.mongodb.com () ## Authentication methods - Service accounts - Digest auth ## Parameters ### Path parameters - **groupId** (string) Unique 24-hexadecimal digit string that identifies your project. Use the [/groups](#tag/Projects/operation/listProjects) endpoint to retrieve all projects to which the authenticated user has access. **NOTE**: Groups and projects are synonymous terms. Your group id is the same as your project id. For existing groups, your group/project id remains the same. The resource and corresponding endpoints use the term groups. - **name** (string) Human-readable label that identifies the serverless instance. ### Query parameters - **envelope** (boolean) Flag that indicates whether Application wraps the response in an `envelope` JSON object. Some API clients cannot access the HTTP response headers or status code. To remediate this, set envelope=true in the query. Endpoints that return a list of results use the results object as an envelope. Application adds the status parameter to the response body. - **pretty** (boolean) Flag that indicates whether the response body should be in the prettyprint format. ## Responses ### 200 OK #### Body: application/vnd.atlas.2023-01-01+json (object) - **connectionStrings** (object) Collection of Uniform Resource Locators that point to the MongoDB database. - **createDate** (string(date-time)) Date and time when MongoDB Cloud created this serverless instance. MongoDB Cloud represents this timestamp in ISO 8601 format in UTC. - **groupId** (string) Unique 24-hexadecimal character string that identifies the project. - **id** (string) Unique 24-hexadecimal digit string that identifies the serverless instance. - **links** (array[object]) List of one or more Uniform Resource Locators (URLs) that point to API sub-resources, related API resources, or both. RFC 5988 outlines these relationships. - **mongoDBVersion** (string) Version of MongoDB that the serverless instance runs. - **name** (string) Human-readable label that identifies the serverless instance. - **providerSettings** (object) Group of cloud provider settings that configure the provisioned MongoDB serverless instance. - **serverlessBackupOptions** (object) Group of settings that configure serverless backup. - **stateName** (string) Human-readable label that indicates any current activity being taken on this cluster by the Atlas control plane. With the exception of CREATING and DELETING states, clusters should always be available and have a Primary node even when in states indicating ongoing activity. - `IDLE`: Atlas is making no changes to this cluster and all changes requested via the UI or API can be assumed to have been applied. - `CREATING`: A cluster being provisioned for the very first time returns state CREATING until it is ready for connections. Ensure IP Access List and DB Users are configured before attempting to connect. - `UPDATING`: A change requested via the UI, API, AutoScaling, or other scheduled activity is taking place. - `DELETING`: The cluster is in the process of deletion and will soon be deleted. - `REPAIRING`: One or more nodes in the cluster are being returned to service by the Atlas control plane. Other nodes should continue to provide service as normal. - **tags** (array[object]) List that contains key-value pairs between 1 to 255 characters in length for tagging and categorizing the serverless instance. - **terminationProtectionEnabled** (boolean) Flag that indicates whether termination protection is enabled on the serverless instance. If set to `true`, MongoDB Cloud won't delete the serverless instance. If set to `false`, MongoDB Cloud will delete the serverless instance. ### 400 Bad Request. #### Body: application/json (object) - **badRequestDetail** (object) Bad request detail. - **detail** (string) Describes the specific conditions or reasons that cause each type of error. - **error** (integer(int32)) HTTP status code returned with this error. - **errorCode** (string) Application error code returned with this error. - **parameters** (array[object]) Parameters used to give more information about the error. - **reason** (string) Application error message returned with this error. ### 401 Unauthorized. #### Body: application/json (object) - **badRequestDetail** (object) Bad request detail. - **detail** (string) Describes the specific conditions or reasons that cause each type of error. - **error** (integer(int32)) HTTP status code returned with this error. - **errorCode** (string) Application error code returned with this error. - **parameters** (array[object]) Parameters used to give more information about the error. - **reason** (string) Application error message returned with this error. ### 403 Forbidden. #### Body: application/json (object) - **badRequestDetail** (object) Bad request detail. - **detail** (string) Describes the specific conditions or reasons that cause each type of error. - **error** (integer(int32)) HTTP status code returned with this error. - **errorCode** (string) Application error code returned with this error. - **parameters** (array[object]) Parameters used to give more information about the error. - **reason** (string) Application error message returned with this error. ### 404 Not Found. #### Body: application/json (object) - **badRequestDetail** (object) Bad request detail. - **detail** (string) Describes the specific conditions or reasons that cause each type of error. - **error** (integer(int32)) HTTP status code returned with this error. - **errorCode** (string) Application error code returned with this error. - **parameters** (array[object]) Parameters used to give more information about the error. - **reason** (string) Application error message returned with this error. ### 409 Conflict. #### Body: application/json (object) - **badRequestDetail** (object) Bad request detail. - **detail** (string) Describes the specific conditions or reasons that cause each type of error. - **error** (integer(int32)) HTTP status code returned with this error. - **errorCode** (string) Application error code returned with this error. - **parameters** (array[object]) Parameters used to give more information about the error. - **reason** (string) Application error message returned with this error. ### 500 Internal Server Error. #### Body: application/json (object) - **badRequestDetail** (object) Bad request detail. - **detail** (string) Describes the specific conditions or reasons that cause each type of error. - **error** (integer(int32)) HTTP status code returned with this error. - **errorCode** (string) Application error code returned with this error. - **parameters** (array[object]) Parameters used to give more information about the error. - **reason** (string) Application error message returned with this error. 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