Scheduled Instagram auto-liker with Phantombuster, GPT-4o & cookie rotation

Description

Who’s it for
Social-media managers and brands that want to keep their Instagram
accounts active by automatically liking fresh posts under selected
hashtags—hands-free and rate-limited.

How it works / What it does
Schedule Trigger runs every 2 hours at a specified minute.
Select Cookie chooses a rotating Instagram session-cookie
(time-slice logic).
Generate Random Hashtag (GPT-4o) outputs a realistic AI/BPA
hashtag.
Instagram Hashtag Agent (Phantombuster) scrapes up to
ENV_MAX_POSTS_PER_HASHTAG recent posts.
Get Random Post selects one; duplicate checker ensures it
hasn’t been liked before (SharePoint CSV).
Builds instagram_posts_to_like.csv, uploads to SharePoint, then
launches the Auto-like Agent which likes the post.
Post URL is appended to instagram_posts_already_liked.csv to avoid
duplicates.
Wait nodes throttle launches to ~12 likes per profile daily.

How to set up
Add credentials: Phantombuster API, SharePoint OAuth2, OpenAI API
key.
In SharePoint › “Phantombuster” folder create:
• instagram_session_cookies.txt – one cookie per line.
• instagram_posts_already_liked.csv with header postUrl.
Adjust Set ENV Variables to change max posts per scrape.
Activate the workflow; it will like one post every 2 hours.

Requirements
n8n 1.33 +
Phantombuster Growth plan (API access)
OpenAI account
Microsoft 365 SharePoint tenant

How to customize
Target a different niche: edit hashtag prompt in Generate Random Hashtag.
Like more posts: raise ENV_MAX_POSTS_PER_HASHTAG,
numberOfPostsPerLaunch, or schedule frequency.
Replace SharePoint with Drive/Dropbox by swapping storage nodes.