Add methods to handle the global unsubscribe list

src/services/sendgrid.ts

@@ -316,4 +316,34 @@ export class SendGridService {
     });
     return response.body;
   }
+
+  // Global Unsubscribe
+  async isInGlobalUnsubscribe(email: string) {
+    const [response] = await this.client.request({
+      method: 'GET',
+      url: `/v3/asm/suppressions/global/${email}`
+    });
+    return response.body.hasOwnProperty('recipient_email');
+  }
+
+  // Add to Global Unsubscribe
+  async addToGlobalUnsubscribe(email: string) {
+    const [response] = await this.client.request({
+      method: 'POST',
+      url: `/v3/asm/suppressions/global`,
+      body: {
+        recipient_emails: [email]
+      }
+    });
+    return response.body;
+  }
+
+  // Delete from Global Unsubscribe
+  async deleteFromGlobalUnsubscribe(email: string) {
+    const [response] = await this.client.request({
+      method: 'DELETE',
+      url: `/v3/asm/suppressions/global/${email}`
+    });
+    return response.body;
+  }
 }

src/tools/index.ts

@@ -370,11 +370,65 @@ export const getToolDefinitions = (service: SendGridService) => [
       },
       required: ['list_id', 'emails']
     }
+  },
+  {
+    name: 'is_in_global_unsubscribe',
+    description: 'Check if an email address is in the global unsubscribe list',
+    inputSchema: {
+      type: 'object',
+      properties: {
+        email: {
+          type: 'string',
+          description: 'Email address to check'
+        }
+      },
+      required: ['email']
+    }
+  },
+  {
+    name: 'add_to_global_unsubscribe',
+    description: 'Add an email address to the global unsubscribe list',
+    inputSchema: {
+      type: 'object',
+      properties: {
+        email: {
+          type: 'string',
+          description: 'Email address to add to the global unsubscribe list'  
+        }
+      },
+      required: ['email']
+    }
+  },
+  {
+    name: 'delete_from_global_unsubscribe',
+    description: 'Delete an email address from the global unsubscribe list',
+    inputSchema: {
+      type: 'object',
+      properties: {
+        email: {
+          type: 'string',
+          description: 'Email address to delete from the global unsubscribe list'
+        }
+      },
+      required: ['email']
+    }
   }
 ];
 
 export const handleToolCall = async (service: SendGridService, name: string, args: any) => {
   switch (name) {
+    case 'is_in_global_unsubscribe':
+      const isInGlobalUnsubscribe = await service.isInGlobalUnsubscribe(args.email);
+      return { content: [{ type: 'text', text: JSON.stringify(isInGlobalUnsubscribe, null, 2) }] };
+
+    case 'add_to_global_unsubscribe':
+      await service.addToGlobalUnsubscribe(args.email);
+      return { content: [{ type: 'text', text: `Email address ${args.email} added to the global unsubscribe list` }] };
+
+    case 'delete_from_global_unsubscribe':
+      await service.deleteFromGlobalUnsubscribe(args.email);
+      return { content: [{ type: 'text', text: `Email address ${args.email} deleted from the global unsubscribe list` }] };
+
     case 'delete_contacts':
       await service.deleteContactsByEmails(args.emails);
       return { content: [{ type: 'text', text: `Successfully deleted ${args.emails.length} contacts` }] };