diff --git a/src/repositories/invitation.repository.ts b/src/repositories/invitation.repository.ts
index b3143528..e956362b 100644
--- a/src/repositories/invitation.repository.ts
+++ b/src/repositories/invitation.repository.ts
@@ -40,6 +40,24 @@ export class InvitationRepository {
     this.client = client;
   }
 
+  async replyInvitation({
+    invitationId,
+    invitationSharedSecret,
+    action = 'accept',
+  }: {
+    invitationId: string;
+    invitationSharedSecret: string;
+    action?: string;
+  }) {
+    const params = { action };
+    const payload = {
+      invitationId,
+      invitationSharedSecret,
+      isGenericInvitation: false,
+    };
+    return await this.client.request.invitation.replyInvitation({ invitationId, params, payload });
+  }
+
   getSentInvitations({ skip = 0, limit = 100 } = {}): InvitationScroller {
     return new InvitationScroller({
       skip,
diff --git a/src/requests/invitation.request.ts b/src/requests/invitation.request.ts
index c1d98dc9..b8e192e5 100644
--- a/src/requests/invitation.request.ts
+++ b/src/requests/invitation.request.ts
@@ -9,6 +9,18 @@ export class InvitationRequest {
     this.request = request;
   }
 
+  async replyInvitation({
+    invitationId,
+    params,
+    payload,
+  }: {
+    invitationId: string;
+    params: { action: string };
+    payload: { invitationId: string; invitationSharedSecret: string; isGenericInvitation: boolean };
+  }): Promise<void> {
+    return this.request.post(`relationships/invitations/${invitationId}?action=${params.action}`, payload);
+  }
+
   sendInvitation({ profileId, trackingId, message }: { profileId: string; trackingId: string; message?: string }): Promise<void> {
     const requestPayload = {
       trackingId,