8 operations, no trigger, and every call billed by X. Here's what it can still do.
Tweets: create, delete, like, retweet, search the last 7 days. Plus send a DM, add to a list, and look up a user.
To react to mentions you poll: a Schedule Trigger, an HTTP Request for mentions, and a dedupe step you build yourself.
X's API only accepts a reply when the author mentioned or quoted you. No tool gets around that through the API.
About $0.015 per plain post, $0.20 per post with a link, $0.005 per post read. You pay X through your own developer app.
Test with User → Get "me" first. Cap rows per run. Route link posts to review. Mark rows posted in the same run.
n8n wins when X is one step in a bigger pipeline. When X is the whole job, you rebuild triggers, dedupe and approvals by hand.
Costs per 100 runs, a safe first workflow, and four builds worth keeping.