diff --git a/packages/api/src/Domain/Client/Workspace/WorkspaceApiOperations.ts b/packages/api/src/Domain/Client/Workspace/WorkspaceApiOperations.ts
index 889c0dcab..57edfcecc 100644
--- a/packages/api/src/Domain/Client/Workspace/WorkspaceApiOperations.ts
+++ b/packages/api/src/Domain/Client/Workspace/WorkspaceApiOperations.ts
@@ -4,4 +4,5 @@ export enum WorkspaceApiOperations {
   Accepting,
   ListingWorkspaces,
   ListingWorkspaceUsers,
+  InitiatingKeyshare,
 }
diff --git a/packages/api/src/Domain/Client/Workspace/WorkspaceApiService.spec.ts b/packages/api/src/Domain/Client/Workspace/WorkspaceApiService.spec.ts
index d252aa3f8..87d9ec26a 100644
--- a/packages/api/src/Domain/Client/Workspace/WorkspaceApiService.spec.ts
+++ b/packages/api/src/Domain/Client/Workspace/WorkspaceApiService.spec.ts
@@ -1,4 +1,5 @@
 import { WorkspaceAccessLevel, WorkspaceType } from '@standardnotes/common'
+
 import { HttpStatusCode } from '../../Http'
 import { WorkspaceCreationResponse } from '../../Response/Workspace/WorkspaceCreationResponse'
 import { WorkspaceInvitationAcceptingResponse } from '../../Response/Workspace/WorkspaceInvitationAcceptingResponse'
@@ -6,6 +7,7 @@ import { WorkspaceInvitationResponse } from '../../Response/Workspace/WorkspaceI
 import { WorkspaceListResponse } from '../../Response/Workspace/WorkspaceListResponse'
 import { WorkspaceUserListResponse } from '../../Response/Workspace/WorkspaceUserListResponse'
 import { WorkspaceServerInterface } from '../../Server/Workspace/WorkspaceServerInterface'
+import { WorkspaceKeyshareInitiatingResponse } from '../../Response/Workspace/WorkspaceKeyshareInitiatingResponse'
 
 import { WorkspaceApiOperations } from './WorkspaceApiOperations'
 import { WorkspaceApiService } from './WorkspaceApiService'
@@ -34,6 +36,10 @@ describe('WorkspaceApiService', () => {
       status: HttpStatusCode.Success,
       data: { users: [] },
     } as jest.Mocked<WorkspaceUserListResponse>)
+    workspaceServer.initiateKeyshare = jest.fn().mockReturnValue({
+      status: HttpStatusCode.Success,
+      data: { success: true },
+    } as jest.Mocked<WorkspaceKeyshareInitiatingResponse>)
   })
 
   it('should create a workspace', async () => {
@@ -304,4 +310,59 @@ describe('WorkspaceApiService', () => {
 
     expect(error).not.toBeNull()
   })
+
+  it('should initiate keyshare in workspace for user', async () => {
+    const response = await createService().initiateKeyshare({
+      workspaceUuid: 'w-1-2-3',
+      userUuid: 'u-1-2-3',
+      encryptedWorkspaceKey: 'foobar',
+    })
+
+    expect(response).toEqual({
+      status: 200,
+      data: {
+        success: true,
+      },
+    })
+    expect(workspaceServer.initiateKeyshare).toHaveBeenCalledWith({
+      workspaceUuid: 'w-1-2-3',
+      userUuid: 'u-1-2-3',
+      encryptedWorkspaceKey: 'foobar',
+    })
+  })
+
+  it('should not initiate keyshare in workspace if it is already initiating', async () => {
+    const service = createService()
+    Object.defineProperty(service, 'operationsInProgress', {
+      get: () => new Map([[WorkspaceApiOperations.InitiatingKeyshare, true]]),
+    })
+
+    let error = null
+    try {
+      await service.initiateKeyshare({ workspaceUuid: 'w-1-2-3', userUuid: 'u-1-2-3', encryptedWorkspaceKey: 'foobar' })
+    } catch (caughtError) {
+      error = caughtError
+    }
+
+    expect(error).not.toBeNull()
+  })
+
+  it('should not initiate keyshare in workspace if the server fails', async () => {
+    workspaceServer.initiateKeyshare = jest.fn().mockImplementation(() => {
+      throw new Error('Oops')
+    })
+
+    let error = null
+    try {
+      await createService().initiateKeyshare({
+        workspaceUuid: 'w-1-2-3',
+        userUuid: 'u-1-2-3',
+        encryptedWorkspaceKey: 'foobar',
+      })
+    } catch (caughtError) {
+      error = caughtError
+    }
+
+    expect(error).not.toBeNull()
+  })
 })
diff --git a/packages/api/src/Domain/Client/Workspace/WorkspaceApiService.ts b/packages/api/src/Domain/Client/Workspace/WorkspaceApiService.ts
index 41099857b..92f9f02cd 100644
--- a/packages/api/src/Domain/Client/Workspace/WorkspaceApiService.ts
+++ b/packages/api/src/Domain/Client/Workspace/WorkspaceApiService.ts
@@ -8,6 +8,7 @@ import { WorkspaceInvitationResponse } from '../../Response/Workspace/WorkspaceI
 import { WorkspaceServerInterface } from '../../Server/Workspace/WorkspaceServerInterface'
 import { WorkspaceListResponse } from '../../Response/Workspace/WorkspaceListResponse'
 import { WorkspaceUserListResponse } from '../../Response/Workspace/WorkspaceUserListResponse'
+import { WorkspaceKeyshareInitiatingResponse } from '../../Response/Workspace/WorkspaceKeyshareInitiatingResponse'
 
 import { WorkspaceApiServiceInterface } from './WorkspaceApiServiceInterface'
 import { WorkspaceApiOperations } from './WorkspaceApiOperations'
@@ -19,6 +20,28 @@ export class WorkspaceApiService implements WorkspaceApiServiceInterface {
     this.operationsInProgress = new Map()
   }
 
+  async initiateKeyshare(dto: {
+    workspaceUuid: string
+    userUuid: string
+    encryptedWorkspaceKey: string
+  }): Promise<WorkspaceKeyshareInitiatingResponse> {
+    this.lockOperation(WorkspaceApiOperations.InitiatingKeyshare)
+
+    try {
+      const response = await this.workspaceServer.initiateKeyshare({
+        workspaceUuid: dto.workspaceUuid,
+        userUuid: dto.userUuid,
+        encryptedWorkspaceKey: dto.encryptedWorkspaceKey,
+      })
+
+      this.unlockOperation(WorkspaceApiOperations.InitiatingKeyshare)
+
+      return response
+    } catch (error) {
+      throw new ApiCallError(ErrorMessage.GenericFail)
+    }
+  }
+
   async listWorkspaceUsers(dto: { workspaceUuid: string }): Promise<WorkspaceUserListResponse> {
     this.lockOperation(WorkspaceApiOperations.ListingWorkspaceUsers)
 
diff --git a/packages/api/src/Domain/Client/Workspace/WorkspaceApiServiceInterface.ts b/packages/api/src/Domain/Client/Workspace/WorkspaceApiServiceInterface.ts
index c949ca6a1..fed57f388 100644
--- a/packages/api/src/Domain/Client/Workspace/WorkspaceApiServiceInterface.ts
+++ b/packages/api/src/Domain/Client/Workspace/WorkspaceApiServiceInterface.ts
@@ -1,5 +1,6 @@
 import { Uuid, WorkspaceAccessLevel, WorkspaceType } from '@standardnotes/common'
 
+import { WorkspaceKeyshareInitiatingResponse } from '../../Response/Workspace/WorkspaceKeyshareInitiatingResponse'
 import { WorkspaceCreationResponse } from '../../Response/Workspace/WorkspaceCreationResponse'
 import { WorkspaceInvitationAcceptingResponse } from '../../Response/Workspace/WorkspaceInvitationAcceptingResponse'
 import { WorkspaceInvitationResponse } from '../../Response/Workspace/WorkspaceInvitationResponse'
@@ -27,4 +28,9 @@ export interface WorkspaceApiServiceInterface {
   }): Promise<WorkspaceInvitationAcceptingResponse>
   listWorkspaces(): Promise<WorkspaceListResponse>
   listWorkspaceUsers(dto: { workspaceUuid: Uuid }): Promise<WorkspaceUserListResponse>
+  initiateKeyshare(dto: {
+    workspaceUuid: Uuid
+    userUuid: Uuid
+    encryptedWorkspaceKey: string
+  }): Promise<WorkspaceKeyshareInitiatingResponse>
 }
diff --git a/packages/api/src/Domain/Request/Workspace/WorkspaceKeyshareInitiatingRequestParams.ts b/packages/api/src/Domain/Request/Workspace/WorkspaceKeyshareInitiatingRequestParams.ts
new file mode 100644
index 000000000..786c43203
--- /dev/null
+++ b/packages/api/src/Domain/Request/Workspace/WorkspaceKeyshareInitiatingRequestParams.ts
@@ -0,0 +1,8 @@
+import { Uuid } from '@standardnotes/common'
+
+export type WorkspaceKeyshareInitiatingRequestParams = {
+  userUuid: Uuid
+  workspaceUuid: Uuid
+  encryptedWorkspaceKey: string
+  [additionalParam: string]: unknown
+}
diff --git a/packages/api/src/Domain/Request/index.ts b/packages/api/src/Domain/Request/index.ts
index b0e53a01a..d6d491f82 100644
--- a/packages/api/src/Domain/Request/index.ts
+++ b/packages/api/src/Domain/Request/index.ts
@@ -9,5 +9,6 @@ export * from './WebSocket/WebSocketConnectionTokenRequestParams'
 export * from './Workspace/WorkspaceCreationRequestParams'
 export * from './Workspace/WorkspaceInvitationAcceptingRequestParams'
 export * from './Workspace/WorkspaceInvitationRequestParams'
+export * from './Workspace/WorkspaceKeyshareInitiatingRequestParams'
 export * from './Workspace/WorkspaceListRequestParams'
 export * from './Workspace/WorkspaceUserListRequestParams'
diff --git a/packages/api/src/Domain/Response/Workspace/WorkspaceKeyshareInitiatingResponse.ts b/packages/api/src/Domain/Response/Workspace/WorkspaceKeyshareInitiatingResponse.ts
new file mode 100644
index 000000000..e29fc7046
--- /dev/null
+++ b/packages/api/src/Domain/Response/Workspace/WorkspaceKeyshareInitiatingResponse.ts
@@ -0,0 +1,9 @@
+import { Either } from '@standardnotes/common'
+
+import { HttpErrorResponseBody } from '../../Http/HttpErrorResponseBody'
+import { HttpResponse } from '../../Http/HttpResponse'
+import { WorkspaceKeyshareInitiatingResponseBody } from './WorkspaceKeyshareInitiatingResponseBody'
+
+export interface WorkspaceKeyshareInitiatingResponse extends HttpResponse {
+  data: Either<WorkspaceKeyshareInitiatingResponseBody, HttpErrorResponseBody>
+}
diff --git a/packages/api/src/Domain/Response/Workspace/WorkspaceKeyshareInitiatingResponseBody.ts b/packages/api/src/Domain/Response/Workspace/WorkspaceKeyshareInitiatingResponseBody.ts
new file mode 100644
index 000000000..649c43d14
--- /dev/null
+++ b/packages/api/src/Domain/Response/Workspace/WorkspaceKeyshareInitiatingResponseBody.ts
@@ -0,0 +1,3 @@
+export type WorkspaceKeyshareInitiatingResponseBody = {
+  success: boolean
+}
diff --git a/packages/api/src/Domain/Response/index.ts b/packages/api/src/Domain/Response/index.ts
index b00245892..7bb95761a 100644
--- a/packages/api/src/Domain/Response/index.ts
+++ b/packages/api/src/Domain/Response/index.ts
@@ -16,7 +16,11 @@ export * from './Workspace/WorkspaceCreationResponse'
 export * from './Workspace/WorkspaceCreationResponseBody'
 export * from './Workspace/WorkspaceInvitationAcceptingResponse'
 export * from './Workspace/WorkspaceInvitationAcceptingResponseBody'
+export * from './Workspace/WorkspaceKeyshareInitiatingResponse'
+export * from './Workspace/WorkspaceKeyshareInitiatingResponseBody'
 export * from './Workspace/WorkspaceInvitationResponse'
 export * from './Workspace/WorkspaceInvitationResponseBody'
 export * from './Workspace/WorkspaceListResponse'
 export * from './Workspace/WorkspaceListResponseBody'
+export * from './Workspace/WorkspaceUserListResponse'
+export * from './Workspace/WorkspaceUserListResponseBody'
diff --git a/packages/api/src/Domain/Server/Workspace/Paths.ts b/packages/api/src/Domain/Server/Workspace/Paths.ts
index 59abb55f6..d9495e22f 100644
--- a/packages/api/src/Domain/Server/Workspace/Paths.ts
+++ b/packages/api/src/Domain/Server/Workspace/Paths.ts
@@ -4,6 +4,8 @@ const WorkspacePaths = {
   createWorkspace: '/v1/workspaces',
   listWorkspaces: '/v1/workspaces',
   listWorkspaceUsers: (uuid: Uuid) => `/v1/workspaces/${uuid}/users`,
+  initiateKeyshare: (worksapceUuid: Uuid, userUuid: Uuid) =>
+    `/v1/workspaces/${worksapceUuid}/users/${userUuid}/keyshare`,
   inviteToWorkspace: (uuid: Uuid) => `/v1/workspaces/${uuid}/invites`,
   acceptInvite: (uuid: Uuid) => `/v1/invites/${uuid}/accept`,
 }
diff --git a/packages/api/src/Domain/Server/Workspace/WorkspaceServer.spec.ts b/packages/api/src/Domain/Server/Workspace/WorkspaceServer.spec.ts
index 0340a5891..b3632cf2a 100644
--- a/packages/api/src/Domain/Server/Workspace/WorkspaceServer.spec.ts
+++ b/packages/api/src/Domain/Server/Workspace/WorkspaceServer.spec.ts
@@ -1,8 +1,10 @@
 import { WorkspaceAccessLevel, WorkspaceType } from '@standardnotes/common'
+
 import { HttpServiceInterface, HttpStatusCode } from '../../Http'
 import { WorkspaceCreationResponse } from '../../Response/Workspace/WorkspaceCreationResponse'
 import { WorkspaceInvitationAcceptingResponse } from '../../Response/Workspace/WorkspaceInvitationAcceptingResponse'
 import { WorkspaceInvitationResponse } from '../../Response/Workspace/WorkspaceInvitationResponse'
+import { WorkspaceKeyshareInitiatingResponse } from '../../Response/Workspace/WorkspaceKeyshareInitiatingResponse'
 import { WorkspaceListResponse } from '../../Response/Workspace/WorkspaceListResponse'
 import { WorkspaceUserListResponse } from '../../Response/Workspace/WorkspaceUserListResponse'
 
@@ -99,4 +101,24 @@ describe('WorkspaceServer', () => {
       data: { users: [] },
     })
   })
+
+  it('should initiate keyshare for user in a workspace', async () => {
+    httpService.post = jest.fn().mockReturnValue({
+      status: HttpStatusCode.Success,
+      data: { success: true },
+    } as jest.Mocked<WorkspaceKeyshareInitiatingResponse>)
+
+    const response = await createServer().initiateKeyshare({
+      workspaceUuid: 'w-1-2-3',
+      userUuid: 'u-1-2-3',
+      encryptedWorkspaceKey: 'foobar',
+    })
+
+    expect(response).toEqual({
+      status: 200,
+      data: {
+        success: true,
+      },
+    })
+  })
 })
diff --git a/packages/api/src/Domain/Server/Workspace/WorkspaceServer.ts b/packages/api/src/Domain/Server/Workspace/WorkspaceServer.ts
index f82efcc06..30d1b2867 100644
--- a/packages/api/src/Domain/Server/Workspace/WorkspaceServer.ts
+++ b/packages/api/src/Domain/Server/Workspace/WorkspaceServer.ts
@@ -9,6 +9,8 @@ import { WorkspaceListRequestParams } from '../../Request/Workspace/WorkspaceLis
 import { WorkspaceListResponse } from '../../Response/Workspace/WorkspaceListResponse'
 import { WorkspaceUserListRequestParams } from '../../Request/Workspace/WorkspaceUserListRequestParams'
 import { WorkspaceUserListResponse } from '../../Response/Workspace/WorkspaceUserListResponse'
+import { WorkspaceKeyshareInitiatingRequestParams } from '../../Request/Workspace/WorkspaceKeyshareInitiatingRequestParams'
+import { WorkspaceKeyshareInitiatingResponse } from '../../Response/Workspace/WorkspaceKeyshareInitiatingResponse'
 
 import { Paths } from './Paths'
 import { WorkspaceServerInterface } from './WorkspaceServerInterface'
@@ -16,6 +18,17 @@ import { WorkspaceServerInterface } from './WorkspaceServerInterface'
 export class WorkspaceServer implements WorkspaceServerInterface {
   constructor(private httpService: HttpServiceInterface) {}
 
+  async initiateKeyshare(
+    params: WorkspaceKeyshareInitiatingRequestParams,
+  ): Promise<WorkspaceKeyshareInitiatingResponse> {
+    const response = await this.httpService.post(
+      Paths.v1.initiateKeyshare(params.workspaceUuid, params.userUuid),
+      params,
+    )
+
+    return response as WorkspaceKeyshareInitiatingResponse
+  }
+
   async listWorkspaceUsers(params: WorkspaceUserListRequestParams): Promise<WorkspaceUserListResponse> {
     const response = await this.httpService.get(Paths.v1.listWorkspaceUsers(params.workspaceUuid), params)
 
diff --git a/packages/api/src/Domain/Server/Workspace/WorkspaceServerInterface.ts b/packages/api/src/Domain/Server/Workspace/WorkspaceServerInterface.ts
index 342879205..d39a83431 100644
--- a/packages/api/src/Domain/Server/Workspace/WorkspaceServerInterface.ts
+++ b/packages/api/src/Domain/Server/Workspace/WorkspaceServerInterface.ts
@@ -8,6 +8,8 @@ import { WorkspaceListRequestParams } from '../../Request/Workspace/WorkspaceLis
 import { WorkspaceListResponse } from '../../Response/Workspace/WorkspaceListResponse'
 import { WorkspaceUserListRequestParams } from '../../Request/Workspace/WorkspaceUserListRequestParams'
 import { WorkspaceUserListResponse } from '../../Response/Workspace/WorkspaceUserListResponse'
+import { WorkspaceKeyshareInitiatingRequestParams } from '../../Request/Workspace/WorkspaceKeyshareInitiatingRequestParams'
+import { WorkspaceKeyshareInitiatingResponse } from '../../Response/Workspace/WorkspaceKeyshareInitiatingResponse'
 
 export interface WorkspaceServerInterface {
   createWorkspace(params: WorkspaceCreationRequestParams): Promise<WorkspaceCreationResponse>
@@ -15,4 +17,5 @@ export interface WorkspaceServerInterface {
   listWorkspaceUsers(params: WorkspaceUserListRequestParams): Promise<WorkspaceUserListResponse>
   inviteToWorkspace(params: WorkspaceInvitationRequestParams): Promise<WorkspaceInvitationResponse>
   acceptInvite(params: WorkspaceInvitationAcceptingRequestParams): Promise<WorkspaceInvitationAcceptingResponse>
+  initiateKeyshare(params: WorkspaceKeyshareInitiatingRequestParams): Promise<WorkspaceKeyshareInitiatingResponse>
 }
diff --git a/packages/services/src/Domain/Workspace/WorkspaceClientInterface.ts b/packages/services/src/Domain/Workspace/WorkspaceClientInterface.ts
index f6f86014d..9a4baefcc 100644
--- a/packages/services/src/Domain/Workspace/WorkspaceClientInterface.ts
+++ b/packages/services/src/Domain/Workspace/WorkspaceClientInterface.ts
@@ -22,4 +22,9 @@ export interface WorkspaceClientInterface {
   }): Promise<{ success: boolean }>
   listWorkspaces(): Promise<{ ownedWorkspaces: Array<Workspace>; joinedWorkspaces: Array<Workspace> }>
   listWorkspaceUsers(dto: { workspaceUuid: Uuid }): Promise<{ users: Array<WorkspaceUser> }>
+  initiateKeyshare(dto: {
+    workspaceUuid: Uuid
+    userUuid: Uuid
+    encryptedWorkspaceKey: string
+  }): Promise<{ success: boolean }>
 }
diff --git a/packages/services/src/Domain/Workspace/WorkspaceManager.ts b/packages/services/src/Domain/Workspace/WorkspaceManager.ts
index a62b9dae6..41a7180f9 100644
--- a/packages/services/src/Domain/Workspace/WorkspaceManager.ts
+++ b/packages/services/src/Domain/Workspace/WorkspaceManager.ts
@@ -14,6 +14,24 @@ export class WorkspaceManager extends AbstractService implements WorkspaceClient
     super(internalEventBus)
   }
 
+  async initiateKeyshare(dto: {
+    workspaceUuid: string
+    userUuid: string
+    encryptedWorkspaceKey: string
+  }): Promise<{ success: boolean }> {
+    try {
+      const result = await this.workspaceApiService.initiateKeyshare(dto)
+
+      if (result.data.error !== undefined) {
+        return { success: false }
+      }
+
+      return result.data
+    } catch (error) {
+      return { success: false }
+    }
+  }
+
   async listWorkspaceUsers(dto: { workspaceUuid: string }): Promise<{ users: WorkspaceUser[] }> {
     try {
       const result = await this.workspaceApiService.listWorkspaceUsers(dto)