Require blast campaigns to be scheduled separately

src/client/campaigns.ts

@@ -79,7 +79,10 @@ export function Campaigns<T extends Constructor<BaseIterableClient>>(Base: T) {
     async createBlastCampaign(
       params: CreateBlastCampaignParams
     ): Promise<CreateCampaignResponse> {
-      const response = await this.client.post("/api/campaigns/create", params);
+      const response = await this.client.post("/api/campaigns/create", {
+        ...params,
+        scheduleSend: false,
+      });
       return this.validateResponse(response, CreateCampaignResponseSchema);
     }
 

src/types/campaigns.ts

@@ -164,37 +164,14 @@ export const CreateBlastCampaignParamsSchema = z.object({
     .array(z.number())
     .min(1)
     .describe("Array of list IDs to which the campaign should be sent"),
-  scheduleSend: z
-    .boolean()
-    .default(false)
-    .describe(
-      "Whether to immediately schedule the blast campaign for sending. Set to true to schedule the campaign on creation. When false, the campaign can be scheduled later using POST /api/campaigns/{campaignId}/schedule."
-    ),
-  sendAt: IterableDateTimeSchema.describe(
-    "Scheduled send time (YYYY-MM-DD HH:MM:SS UTC)"
-  ),
   campaignDataFields: campaignDataFieldsSchema,
-  sendMode: z
-    .enum(["ProjectTimeZone", "RecipientTimeZone"])
-    .optional()
-    .describe("Send mode for blast campaigns"),
-  startTimeZone: z
-    .string()
-    .optional()
-    .describe("Starting timezone for recipient timezone sends (IANA format)"),
-  defaultTimeZone: z
-    .string()
-    .optional()
-    .describe(
-      "Default timezone for recipients without known timezone (IANA format)"
-    ),
   suppressionListIds: z
     .array(z.number())
     .optional()
     .describe("Array of suppression list IDs"),
 });
 
-export type CreateBlastCampaignParams = z.input<
+export type CreateBlastCampaignParams = z.infer<
   typeof CreateBlastCampaignParamsSchema
 >;
 

tests/integration/campaigns.test.ts

@@ -32,7 +32,6 @@ describe("Campaign Management Integration Tests", () => {
     name: string;
     templateId: number;
     listIds: number[];
-    sendAt: string;
   }) => {
     const createResponse = await retryRateLimited(
       () => withTimeout(client.createBlastCampaign(params)),
@@ -514,21 +513,25 @@ describe("Campaign Management Integration Tests", () => {
   it("should create, schedule, and cancel a blast campaign", async () => {
     const campaignName = uniqueId("MCP-Test-Schedule");
 
-    // Schedule for 24 hours in the future (YYYY-MM-DD HH:MM:SS format)
-    const sendAtDate = new Date(Date.now() + 24 * 60 * 60 * 1000);
-    const sendAt = sendAtDate.toISOString().replace('T', ' ').substring(0, 19);
-
     const campaignId = await createTestBlastCampaign({
       name: campaignName,
       templateId: testTemplateId,
       listIds: [testListId],
-      sendAt,
     });
 
     try {
+      // Schedule for 24 hours in the future (ISO-8601 format)
+      const sendAtDate = new Date(Date.now() + 24 * 60 * 60 * 1000);
+      const sendAt = sendAtDate.toISOString();
+
+      await performCampaignAction(
+        () => withTimeout(client.scheduleCampaign({ campaignId, sendAt })),
+        "Schedule blast campaign"
+      );
+
       const campaign = await retryRateLimited(
         () => withTimeout(client.getCampaign({ id: campaignId })),
-        "Get created blast campaign"
+        "Get scheduled blast campaign"
       );
 
       expect(campaign.type).toBe("Blast");
@@ -703,17 +706,22 @@ describe("Campaign Management Integration Tests", () => {
   }, 60000);
 
   it("should send a scheduled campaign immediately", async () => {
-    const sendAtDate = new Date(Date.now() + 24 * 60 * 60 * 1000);
-    const sendAt = sendAtDate.toISOString().replace('T', ' ').substring(0, 19);
-
     const campaignId = await createTestBlastCampaign({
       name: uniqueId("MCP-Test-Send"),
       templateId: testTemplateId,
       listIds: [testListId],
-      sendAt,
     });
 
     try {
+      // Schedule for 24 hours in the future, then send immediately
+      const sendAtDate = new Date(Date.now() + 24 * 60 * 60 * 1000);
+      const sendAt = sendAtDate.toISOString();
+
+      await performCampaignAction(
+        () => withTimeout(client.scheduleCampaign({ campaignId, sendAt })),
+        "Schedule campaign for later"
+      );
+
       const campaign = await retryRateLimited(
         () => withTimeout(client.getCampaign({ id: campaignId })),
         "Get scheduled campaign"

tests/unit/campaigns.test.ts

@@ -788,7 +788,6 @@ describe("Campaign Management", () => {
           name: "Test Campaign",
           templateId: 123,
           listIds: [456],
-          sendAt: "2026-03-01 10:00:00",
         })
       ).not.toThrow();
 
@@ -798,30 +797,16 @@ describe("Campaign Management", () => {
           name: "Test Campaign",
           templateId: 123,
           listIds: [456, 789],
-          sendAt: "2026-03-01 10:00:00",
-          sendMode: "RecipientTimeZone",
-          startTimeZone: "America/New_York",
-          defaultTimeZone: "America/Los_Angeles",
           suppressionListIds: [100],
           campaignDataFields: { key: "value" },
         })
       ).not.toThrow();
 
-      // Missing sendAt
-      expect(() =>
-        CreateBlastCampaignParamsSchema.parse({
-          name: "Test Campaign",
-          templateId: 123,
-          listIds: [456],
-        })
-      ).toThrow();
-
       // Missing listIds
       expect(() =>
         CreateBlastCampaignParamsSchema.parse({
           name: "Test Campaign",
           templateId: 123,
-          sendAt: "2026-03-01 10:00:00",
         })
       ).toThrow();
 
@@ -831,7 +816,6 @@ describe("Campaign Management", () => {
           name: "Test Campaign",
           templateId: 123,
           listIds: [],
-          sendAt: "2026-03-01 10:00:00",
         })
       ).toThrow();
 
@@ -840,7 +824,6 @@ describe("Campaign Management", () => {
         CreateBlastCampaignParamsSchema.parse({
           templateId: 123,
           listIds: [456],
-          sendAt: "2026-03-01 10:00:00",
         })
       ).toThrow();
 
@@ -849,7 +832,6 @@ describe("Campaign Management", () => {
         CreateBlastCampaignParamsSchema.parse({
           name: "Test Campaign",
           listIds: [456],
-          sendAt: "2026-03-01 10:00:00",
         })
       ).toThrow();
     });
@@ -897,14 +879,13 @@ describe("Campaign Management", () => {
         name: "Test Blast",
         templateId: 100,
         listIds: [200],
-        sendAt: "2026-03-01 10:00:00",
       };
 
       const result = await client.createBlastCampaign(params);
 
       expect(mockAxiosInstance.post).toHaveBeenCalledWith(
         "/api/campaigns/create",
-        params
+        { ...params, scheduleSend: false }
       );
       expect(result).toEqual({ campaignId: 12345 });
     });