fix(slack): preserve agent workflow compatibility

Author: TheodoreSpeaks

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

@@ -32,6 +32,12 @@ function operationIds(): string[] {
   return operation?.options?.map((option) => option.id) ?? []
 }
 
+function mapSlackV2Params(params: Record<string, unknown>): Record<string, unknown> {
+  const mapParams = SlackV2Block.tools.config?.params
+  if (!mapParams) throw new Error('Slack v2 parameter mapper is required')
+  return mapParams(params)
+}
+
 describe('Slack block release', () => {
   it('releases slack_v2 and keeps the legacy block executable but hidden', () => {
     expect(SlackBlock.hideFromToolbar).toBe(true)
@@ -63,4 +69,23 @@ describe('Slack block release', () => {
       required: true,
     })
   })
+
+  it('preserves persisted suggested-prompt inputs while requiring the custom-bot tool', () => {
+    expect(
+      mapSlackV2Params({
+        operation: 'set_suggested_prompts',
+        oauthCredential: 'custom-bot-credential',
+        channel: 'C123',
+        getThreadTimestamp: '1700000000.000001',
+        suggestedPrompts: '[{"title":"Summarize","message":"Summarize this thread"}]',
+        promptsTitle: 'Try asking',
+      })
+    ).toMatchObject({
+      credential: 'custom-bot-credential',
+      channel: 'C123',
+      threadTs: '1700000000.000001',
+      prompts: '[{"title":"Summarize","message":"Summarize this thread"}]',
+      promptsTitle: 'Try asking',
+    })
+  })
 })

apps/sim/blocks/blocks/slack.ts

@@ -3512,11 +3512,20 @@ export const SlackV2Block: BlockConfig<SlackResponse> = {
         const baseParams = mapParams(params)
         if (!SLACK_V2_AGENT_OPERATIONS.includes(params.operation as never)) return baseParams
 
+        const persistedSuggestedPromptParams =
+          params.operation === 'set_suggested_prompts'
+            ? {
+                credential: baseParams.credential,
+                channel: baseParams.channel,
+                threadTs: baseParams.threadTs,
+              }
+            : undefined
+
         return {
           ...baseParams,
-          credential: params.agentCredentialId,
-          channel: params.agentChannelId,
-          threadTs: params.agentThreadTs,
+          credential: params.agentCredentialId ?? persistedSuggestedPromptParams?.credential,
+          channel: params.agentChannelId ?? persistedSuggestedPromptParams?.channel,
+          threadTs: params.agentThreadTs ?? persistedSuggestedPromptParams?.threadTs,
           status: params.agentSessionStatus,
           title: params.agentSessionTitle,
           initiatorUserId: params.agentInitiatorUserId,

apps/sim/triggers/slack/capabilities.test.ts

@@ -22,6 +22,8 @@ const REQUIRED_AGENT_EVENTS = [
   'agent_session_title_changed',
   'app_context_changed',
   'app_home_opened',
+  'assistant_thread_context_changed',
+  'assistant_thread_started',
   'message.im',
 ]
 

apps/sim/triggers/slack/capabilities.ts

@@ -208,6 +208,8 @@ export const SLACK_AGENT_EVENTS = [
   'agent_session_title_changed',
   'app_context_changed',
   'app_home_opened',
+  'assistant_thread_context_changed',
+  'assistant_thread_started',
   'message.im',
 ] as const