diff --git a/src/clients/conversations-client.test.ts b/src/clients/conversations-client.test.ts
new file mode 100644
index 0000000..9256aa0
--- /dev/null
+++ b/src/clients/conversations-client.test.ts
@@ -0,0 +1,63 @@
+import { http, HttpResponse } from 'msw'
+import { describe, expect, it } from 'vitest'
+
+import { CommsApi } from '../comms-api'
+import { server } from '../testUtils/msw-setup'
+import {
+    TEST_API_BASE_URL as BASE,
+    TEST_API_TOKEN,
+    TEST_CONVERSATION_ID,
+} from '../testUtils/test-defaults'
+
+// Pins the wire shape of the `conversations/get` pagination args. `olderThan`
+// is a `Date` that the client must convert itself — the transport's generic
+// snake-casing would turn a `Date` into an empty object.
+
+describe('ConversationsClient — wire serialization', () => {
+    async function captureGetParams(
+        args: Parameters<CommsApi['conversations']['getConversations']>[0],
+    ) {
+        const capturedUrls: URL[] = []
+        server.use(
+            http.get(`${BASE}/conversations/get`, ({ request }) => {
+                capturedUrls.push(new URL(request.url))
+                return HttpResponse.json([])
+            }),
+        )
+
+        const api = new CommsApi(TEST_API_TOKEN)
+        await api.conversations.getConversations(args)
+
+        expect(capturedUrls).toHaveLength(1)
+        return (capturedUrls[0] as URL).searchParams
+    }
+
+    it('getConversations sends the compound cursor as older_than_ts / before_id', async () => {
+        const olderThan = new Date('2026-06-25T15:53:53Z')
+        const params = await captureGetParams({
+            workspaceId: 123,
+            archived: false,
+            olderThan,
+            beforeId: TEST_CONVERSATION_ID,
+            limit: 500,
+        })
+
+        expect(params.get('workspace_id')).toBe('123')
+        expect(params.get('archived')).toBe('false')
+        expect(params.get('older_than_ts')).toBe(String(Math.floor(olderThan.getTime() / 1000)))
+        // The Date arg must not leak through the generic snake-casing.
+        expect(params.has('older_than')).toBe(false)
+        expect(params.get('before_id')).toBe(TEST_CONVERSATION_ID)
+        expect(params.get('limit')).toBe('500')
+    })
+
+    it('getConversations keeps the minimal call shape unchanged', async () => {
+        const params = await captureGetParams({ workspaceId: 123 })
+
+        expect(params.get('workspace_id')).toBe('123')
+        expect(params.has('archived')).toBe(false)
+        expect(params.has('older_than_ts')).toBe(false)
+        expect(params.has('before_id')).toBe(false)
+        expect(params.has('limit')).toBe(false)
+    })
+})
diff --git a/src/clients/conversations-client.ts b/src/clients/conversations-client.ts
index e762a9c..90c5d8e 100644
--- a/src/clients/conversations-client.ts
+++ b/src/clients/conversations-client.ts
@@ -47,26 +47,52 @@ export class ConversationsClient extends BaseClient {
         : ConversationListSchema
 
     /**
-     * Gets all conversations for a workspace.
+     * Gets a page of conversations for a workspace, newest activity first.
+     * The server returns at most 500 rows per request (20 by default); pass
+     * the last row's `lastActive`/`id` as `olderThan`/`beforeId` to fetch
+     * the next page. Paired, they form a strict compound boundary, so pages
+     * never repeat rows. Omitting `archived` returns active and archived
+     * conversations mixed.
      *
      * @param args - The arguments for getting conversations.
      * @param args.workspaceId - The workspace ID.
-     * @param args.archived - Optional flag to include archived conversations.
+     * @param args.archived - Optional flag to filter archived (true) or active (false) conversations.
+     * @param args.olderThan - Optional date to get conversations last active before.
+     * @param args.beforeId - Optional conversation id. Paired with olderThan it forms the
+     *   strict compound cursor; alone it pages by conversation id order instead.
+     * @param args.limit - Optional page size (server default 20, max 500).
      * @returns An array of conversation objects.
      *
      * @example
      * ```typescript
-     * const conversations = await api.conversations.getConversations({ workspaceId: 123 })
-     * conversations.forEach(c => console.log(c.title))
+     * const page = await api.conversations.getConversations({ workspaceId: 123, limit: 500 })
+     * const last = page.at(-1)
+     * const nextPage = last
+     *     ? await api.conversations.getConversations({
+     *           workspaceId: 123,
+     *           limit: 500,
+     *           olderThan: last.lastActive,
+     *           beforeId: last.id,
+     *       })
+     *     : []
      * ```
      */
     getConversations(args: GetConversationsArgs): Promise<Conversation[]> {
+        // Fields are picked explicitly (matching getThreads/getComments) so a
+        // future Date field can't silently reach the generic snake-casing,
+        // which would turn it into an empty object on the wire.
+        const params: Record<string, unknown> = { workspaceId: args.workspaceId }
+        if (args.archived != null) params.archived = args.archived
+        if (args.olderThan) params.olderThanTs = Math.floor(args.olderThan.getTime() / 1000)
+        if (args.beforeId != null) params.beforeId = args.beforeId
+        if (args.limit != null) params.limit = args.limit
+
         return request<Conversation[]>({
             httpMethod: 'GET',
             baseUri: this.getBaseUri(),
             relativePath: `${ENDPOINT_CONVERSATIONS}/get`,
             apiToken: this.apiToken,
-            payload: args,
+            payload: params,
             customFetch: this.customFetch,
         }).then((response) => this.conversationListSchema.parse(response.data))
     }
diff --git a/src/types/requests.ts b/src/types/requests.ts
index 1648489..9a41a39 100644
--- a/src/types/requests.ts
+++ b/src/types/requests.ts
@@ -143,6 +143,9 @@ export type GetCommentsArgs = z.infer<typeof GetCommentsArgsSchema>
 export const GetConversationsArgsSchema = z.object({
     workspaceId: z.number(),
     archived: z.boolean().nullable().optional(),
+    olderThan: z.date().nullable().optional(),
+    beforeId: z.string().nullable().optional(),
+    limit: z.number().nullable().optional(),
 })
 
 export type GetConversationsArgs = z.infer<typeof GetConversationsArgsSchema>