Step 2: Connect Google Sheets

These nodes read and update the list of already-contacted commenters.

1. Open Retrieve Contacted List and set Document to [YOUR_ID] and Sheet to gid=0 (Hoja 1).
2. Credential Required: Connect your googleSheetsOAuth2Api credentials in Retrieve Contacted List.
3. Open Append Contacted Row and ensure Operation is set to append.
4. Verify column mappings in Append Contacted Row use expressions like {{ $('Isolate New Comments').item.json.commentId }}, {{ $('Isolate New Comments').item.json.username }}, and {{ $('Isolate New Comments').item.json.replyMessage }}.
5. Credential Required: Connect your googleSheetsOAuth2Api credentials in Append Contacted Row.

Step 3: Set Up Post Configuration and Comment Retrieval

Define the Instagram post to monitor and pull comments through the API.

1. Open Set Post & Reply Text and set postUrl to Instagram url post/reel.
2. Set replyMessage to Thanks so much! This is the template: xxxxx and profileUsername to add_upload_post_username.
3. Open Fetch Post Comments and set URL to =https://api.upload-post.com/api/uploadposts/comments.
4. In Fetch Post Comments, set query parameters: platform = instagram, user = {{ $('Set Post & Reply Text').item.json.profileUsername }}, and post_url = {{ $('Set Post & Reply Text').item.json.postUrl }}.
5. Credential Required: Connect your httpHeaderAuth credentials in Fetch Post Comments.

Step 4: Set Up Comment Filtering Logic

Filter out commenters already contacted and decide whether to send replies or skip the cycle.

1. Open Isolate New Comments and keep the provided JavaScript, which normalizes comment IDs and excludes those found in Retrieve Contacted List.
2. Confirm Isolate New Comments uses values from Set Post & Reply Text for replyMessage, postUrl, and profileUsername.
3. Open Verify New Comment Presence and confirm its conditions use expressions like {{ $json.noNewComments }} and {{ !$json.noNewComments }}.
4. Check that Verify New Comment Presence routes to Post Comment Reply when new comments exist, and to Build Session Summary otherwise.

Step 5: Configure Reply Posting and Logging

Send replies, validate results, and capture success or failure outcomes.

1. Open Post Comment Reply and confirm the JSON body uses {{ $json.profileUsername }}, {{ $json.commentId }}, and {{ $json.replyMessage }}.
2. Credential Required: Connect your httpHeaderAuth credentials in Post Comment Reply.
3. Open Validate Reply Result and confirm it checks {{ $json.success }} to route success to Append Contacted Row and failures to Capture Failed Reply.
4. Review Capture Failed Reply to ensure it logs failed replies with userId, username, and commentId from Isolate New Comments.
5. Open Build Session Summary to aggregate totals from Fetch Post Comments, Isolate New Comments, Append Contacted Row, and Capture Failed Reply.

Step 6: Test and Activate Your Workflow

Run a manual test first, then enable scheduled monitoring when results look correct.

1. Click Execute Workflow using Manual Start Launch to test the full flow.
2. Confirm Fetch Post Comments returns comments and Isolate New Comments outputs items for new commenters.
3. Check that successful replies appear in your Google Sheet via Append Contacted Row, and failed ones are logged by Capture Failed Reply.
4. Verify Build Session Summary outputs a summary message and totals in its JSON output.
5. When you are satisfied, toggle the workflow to Active to let Scheduled Check Trigger run every 15 minutes.