fix(slack): return one conversation page with next cursor

apps/docs/content/docs/integrations/slack.mdx

@@ -939,7 +939,7 @@ Rename the Slack agent session associated with a thread.
 
 ### Slack List Channels
 
-List up to 10,000 accessible public and private Slack channels across as many cursor pages as Slack supplies, capped at 200 provider pages.
+List one page of accessible public and private Slack channels. Pass the returned nextCursor as cursor to fetch the next page.
 
 #### Input
 
@@ -951,13 +951,12 @@ List up to 10,000 accessible public and private Slack channels across as many cu
 | `excludeArchived` | boolean | No | Exclude archived channels \(default: true\) |
 | `limit` | number | No | Conversations to request per Slack page \(default: 100, max: 200\) |
 | `cursor` | string | No | Pagination cursor from a previous response.nextCursor to resume from |
-| `maxPages` | number | No | Maximum number of Slack pages to fetch \(default: 200, max: 200\) |
 
 #### Output
 
 | Parameter | Type | Description |
 | --------- | ---- | ----------- |
-| `channels` | array | Up to 10,000 accessible public and private channels |
+| `channels` | array | One page of accessible public and private channels |
 |   ↳ `id` | string | Conversation ID \(for example, C123, D123, or G123\) |
 |   ↳ `name` | string | Channel or group-DM name; omitted for one-to-one direct messages |
 |   ↳ `is_channel` | boolean | Whether this is a channel |
@@ -983,10 +982,9 @@ List up to 10,000 accessible public and private Slack channels across as many cu
 |   ↳ `priority` | number | Slack sidebar sort priority |
 | `ids` | array | Conversation IDs for every returned channel |
 | `names` | array | Names of returned channels |
-| `count` | number | Total number of conversations returned across all fetched pages, up to 10,000 |
-| `hasMore` | boolean | Whether more Slack conversation pages remain beyond the fetched window |
+| `count` | number | Number of conversations returned in this page |
+| `hasMore` | boolean | Whether a next cursor is available to fetch more Slack conversations |
 | `nextCursor` | string | Cursor to fetch the next page; null when there are no more pages |
-| `pages` | number | Number of Slack conversation pages fetched in this invocation |
 
 ### Slack List Channel Members
 

apps/sim/blocks/blocks/slack.test.ts

@@ -190,12 +190,12 @@ describe('Slack block release', () => {
     expect(selectTool(repurposedValues)).toBe('slack_set_suggested_prompts_v2')
   })
 
-  it('maps bounded cursor pagination for list channels', () => {
+  it('maps a single page and cursor for list channels', () => {
     const values = { operation: 'list_channels' }
     expect(SlackV2Block.outputs.hasMore.description).toBe(
       'Whether more thread messages or provider pages remain beyond the fetched window'
     )
-    expect(isSlackV2SubBlockVisible('channelMaxPages', values)).toBe(true)
+    expect(SlackV2Block.subBlocks.some((subBlock) => subBlock.id === 'channelMaxPages')).toBe(false)
     expect(isSlackV2SubBlockVisible('paginationCursor', values)).toBe(true)
     expect(
       mapSlackV2Params({
@@ -206,15 +206,12 @@ describe('Slack block release', () => {
       })
     ).toMatchObject({
       limit: 50,
-      maxPages: 4,
       cursor: 'cursor-1',
     })
     expect(() => mapSlackV2Params({ ...values, channelLimit: '201' })).toThrow(
       'Conversations per page must be an integer between 1 and 200'
     )
-    expect(() => mapSlackV2Params({ ...values, channelMaxPages: '201' })).toThrow(
-      'Max pages must be an integer between 1 and 200'
-    )
+    expect(mapSlackV2Params({ ...values, channelMaxPages: '200' })).not.toHaveProperty('maxPages')
     expect(mapSlackV2Params({ ...values, channelLimit: null, channelMaxPages: ' ' })).toMatchObject(
       { limit: 100 }
     )

apps/sim/blocks/blocks/slack.ts

@@ -771,17 +771,6 @@ Do not include any explanations, markdown formatting, or other text outside the
       },
       mode: 'advanced',
     },
-    {
-      id: 'channelMaxPages',
-      title: 'Max Pages',
-      type: 'short-input',
-      placeholder: '200',
-      condition: {
-        field: 'operation',
-        value: 'list_channels',
-      },
-      mode: 'advanced',
-    },
     // List Members specific fields
     {
       id: 'memberLimit',
@@ -823,7 +812,7 @@ Do not include any explanations, markdown formatting, or other text outside the
       id: 'paginationCursor',
       title: 'Pagination Cursor',
       type: 'short-input',
-      placeholder: 'next_cursor from a previous response',
+      placeholder: 'nextCursor from a previous response',
       condition: {
         field: 'operation',
         value: ['list_channels', 'list_members', 'list_users'],
@@ -1923,7 +1912,6 @@ Return ONLY the integer Unix timestamp - no explanations, no quotes, no extra te
           emojiName,
           includePrivate,
           channelLimit,
-          channelMaxPages,
           memberLimit,
           includeDeleted,
           userLimit,
@@ -2149,17 +2137,6 @@ Return ONLY the integer Unix timestamp - no explanations, no quotes, no extra te
               throw new Error('Conversations per page must be an integer between 1 and 200')
             }
             baseParams.limit = parsedLimit
-            const hasChannelMaxPages =
-              channelMaxPages !== undefined &&
-              channelMaxPages !== null &&
-              (typeof channelMaxPages !== 'string' || Boolean(channelMaxPages.trim()))
-            if (hasChannelMaxPages) {
-              const parsedMaxPages = Number(channelMaxPages)
-              if (!Number.isInteger(parsedMaxPages) || parsedMaxPages < 1 || parsedMaxPages > 200) {
-                throw new Error('Max pages must be an integer between 1 and 200')
-              }
-              baseParams.maxPages = parsedMaxPages
-            }
             if (paginationCursor) {
               baseParams.cursor = String(paginationCursor).trim()
             }
@@ -2426,7 +2403,6 @@ Return ONLY the integer Unix timestamp - no explanations, no quotes, no extra te
     // List Channels inputs
     includePrivate: { type: 'string', description: 'Include private channels (true/false)' },
     channelLimit: { type: 'string', description: 'Conversations to request per Slack page' },
-    channelMaxPages: { type: 'string', description: 'Maximum Slack pages to fetch (max 200)' },
     // List Members inputs
     memberLimit: { type: 'string', description: 'Maximum number of members to return' },
     // List Users inputs
@@ -2435,7 +2411,7 @@ Return ONLY the integer Unix timestamp - no explanations, no quotes, no extra te
     // Shared pagination input
     paginationCursor: {
       type: 'string',
-      description: 'Pagination cursor (next_cursor) for list_channels/list_members/list_users',
+      description: 'Pagination cursor (nextCursor) for list_channels/list_members/list_users',
     },
     // Ephemeral message inputs
     ephemeralUser: { type: 'string', description: 'User ID who will see the ephemeral message' },
@@ -2657,7 +2633,7 @@ Return ONLY the integer Unix timestamp - no explanations, no quotes, no extra te
     channels: {
       type: 'json',
       description:
-        'Array of up to 10,000 accessible public and private channel objects, including conversation type and membership fields.',
+        'One page of accessible public and private channel objects, including conversation type and membership fields.',
     },
     count: {
       type: 'number',

apps/sim/lib/internal/slack/execute-tool.test.ts

@@ -45,7 +45,7 @@ const INPUTS = {
   },
   slack_delete_message: { accessToken: 'token', channel: 'C1', timestamp: '1.0' },
   slack_download: { accessToken: 'token', fileId: 'F1', fileName: 'report.pdf' },
-  slack_list_channels: { accessToken: 'token', limit: 100, maxPages: 10 },
+  slack_list_channels: { accessToken: 'token', limit: 100, cursor: 'cursor-1' },
   slack_ephemeral_message: {
     accessToken: 'token',
     channel: 'C1',

apps/sim/lib/internal/slack/operations/list-conversations.ts

@@ -5,8 +5,6 @@ import type { InternalToolOperationImplementation } from '@/lib/internal/tool-op
 import {
   DEFAULT_CONVERSATION_PAGE_LIMIT,
   MAX_CONVERSATION_PAGE_LIMIT,
-  MAX_CONVERSATION_PAGES,
-  MAX_CONVERSATIONS,
 } from '@/tools/slack/list_channels'
 import type { SlackListChannelsParams, SlackListChannelsResponse } from '@/tools/slack/types'
 import {
@@ -115,51 +113,33 @@ export const executeSlackListConversationsOperation: InternalToolOperationImplem
     'Conversation page size',
     MAX_CONVERSATION_PAGE_LIMIT
   )
-  const maxPages = resolveBoundedInteger(
-    params.maxPages,
-    MAX_CONVERSATION_PAGES,
-    'Maximum conversation pages',
-    MAX_CONVERSATION_PAGES
-  )
-  let cursor =
+  const cursor =
     params.cursor === undefined ? undefined : requireSlackString(params.cursor, 'Pagination cursor')
-  const seenCursors = new Set(cursor ? [cursor] : [])
-  const channels: SlackConversation[] = []
-  let nextCursor: string | null = null
-  let pages = 0
-
-  while (pages < maxPages && channels.length < MAX_CONVERSATIONS) {
-    const pageLimit = Math.min(limit, MAX_CONVERSATIONS - channels.length)
-    const { data } = await requestSlackApi({
-      accessToken,
-      method: 'conversations.list',
-      httpMethod: 'GET',
-      query: {
-        types,
-        exclude_archived: String(excludeArchived),
-        limit: pageLimit,
-        cursor,
-      },
-      signal,
-    })
-    const parsed = slackListConversationsResponseSchema.parse(data)
-    assertSlackApiSuccess(parsed, 'Failed to list conversations from Slack')
-    if (!parsed.channels) {
-      throw new Error('Slack returned a malformed conversations list')
-    }
-    if (parsed.channels.length > pageLimit) {
-      throw new Error(`Slack returned more than the requested ${pageLimit} conversations`)
-    }
+  const { data } = await requestSlackApi({
+    accessToken,
+    method: 'conversations.list',
+    httpMethod: 'GET',
+    query: {
+      types,
+      exclude_archived: String(excludeArchived),
+      limit,
+      cursor,
+    },
+    signal,
+  })
+  const parsed = slackListConversationsResponseSchema.parse(data)
+  assertSlackApiSuccess(parsed, 'Failed to list conversations from Slack')
+  if (!parsed.channels) {
+    throw new Error('Slack returned a malformed conversations list')
+  }
+  if (parsed.channels.length > limit) {
+    throw new Error(`Slack returned more than the requested ${limit} conversations`)
+  }
 
-    channels.push(...parsed.channels.map(mapSlackConversation))
-    pages += 1
-    nextCursor = parsed.response_metadata?.next_cursor?.trim() || null
-    if (!nextCursor) break
-    if (seenCursors.has(nextCursor)) {
-      throw new Error('Slack returned a repeated conversation pagination cursor')
-    }
-    seenCursors.add(nextCursor)
-    cursor = nextCursor
+  const channels = parsed.channels.map(mapSlackConversation)
+  const nextCursor = parsed.response_metadata?.next_cursor?.trim() || null
+  if (nextCursor && nextCursor === cursor) {
+    throw new Error('Slack returned a repeated conversation pagination cursor')
   }
 
   return {
@@ -173,7 +153,6 @@ export const executeSlackListConversationsOperation: InternalToolOperationImplem
       count: channels.length,
       hasMore: Boolean(nextCursor),
       nextCursor,
-      pages,
     },
   }
 }

apps/sim/lib/workflows/migrations/subblock-migrations.test.ts

@@ -177,6 +177,34 @@ describe('migrateSubblockIds', () => {
     expect(blocks.b1.subBlocks.metrics).toBeUndefined()
   })
 
+  it.each(['slack', 'slack_v2'])(
+    'removes the retired channel page cap from %s while preserving pagination inputs',
+    (type) => {
+      const input = {
+        b1: makeBlock({
+          type,
+          subBlocks: {
+            operation: { id: 'operation', type: 'dropdown', value: 'list_channels' },
+            channelMaxPages: { id: 'channelMaxPages', type: 'short-input', value: '200' },
+            channelLimit: { id: 'channelLimit', type: 'short-input', value: '50' },
+            paginationCursor: { id: 'paginationCursor', type: 'short-input', value: 'cursor-2' },
+            historyMaxPages: { id: 'historyMaxPages', type: 'short-input', value: '10' },
+          },
+        }),
+      }
+
+      const { blocks, migrated } = migrateSubblockIds(input)
+
+      expect(migrated).toBe(true)
+      expect(blocks.b1.subBlocks).not.toHaveProperty('channelMaxPages')
+      expect(blocks.b1.subBlocks).not.toHaveProperty('_removed_channelMaxPages')
+      expect(blocks.b1.subBlocks.channelLimit.value).toBe('50')
+      expect(blocks.b1.subBlocks.paginationCursor.value).toBe('cursor-2')
+      expect(blocks.b1.subBlocks.historyMaxPages.value).toBe('10')
+      expect(migrateSubblockIds(blocks).migrated).toBe(false)
+    }
+  )
+
   describe('snowflake block', () => {
     it('renames the object fields onto their advanced text inputs', () => {
       const input: Record<string, BlockState> = {

apps/sim/lib/workflows/migrations/subblock-migrations.ts

@@ -111,6 +111,9 @@ function isFieldProjection(value: unknown): boolean {
  * secret onto a live subblock.
  */
 export const SUBBLOCK_ID_MIGRATIONS: Record<string, readonly SubblockIdMigration[]> = {
+  /** List Channels now returns one page and a cursor; automatic page limits are retired. */
+  slack: [{ from: 'channelMaxPages', to: '_removed_channelMaxPages' }],
+  slack_v2: [{ from: 'channelMaxPages', to: '_removed_channelMaxPages' }],
   instagram: [{ from: 'metrics', to: 'insightMetrics' }],
   knowledge: [{ from: 'knowledgeBaseId', to: 'knowledgeBaseSelector' }],
   /** Connected accounts resolve from the workspace; group selectors have no replacement. */