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How I built AutoPostMode: an AI that researches, writes and posts to X and LinkedIn

I kept losing hours every week to the same loop: find something worth posting about, write it, make an image, then remember to post at a good time. So I built AutoPostMode (https://autopostmode.com) to run that whole loop for me.

What it does

  • Researches trending topics in your niche
  • Writes posts in your voice
  • Designs image cards for them
  • Publishes to X and LinkedIn at the best times

The stack

  • Backend: Python with FastAPI. It's fast to build with, and the auto-generated docs made testing endpoints easy.
  • Frontend: plain HTML, CSS and JavaScript. No framework, so pages stay light and quick.
  • AI APIs for research and writing.
  • X API and LinkedIn API for publishing.
  • Cloudflare in front for caching and protection.

Free tools, no signup

Before asking anyone to sign up, I wanted people to get value right away. So there's a set of free tools at https://autopostmode.com/tools:

  • Hook grader and hook generator
  • Card maker
  • Thread splitter
  • LinkedIn character counter
  • Best-time-to-post checker

What I learned

  1. Keeping the frontend boring (no framework) saved a lot of time.
  2. Free tools are a better first touch than a signup wall.
  3. A post only sounds like you if the AI has real examples of your writing to learn from.

Try it

There's a 3-day free trial. X plans are $29, $59 and $99 per month, and LinkedIn starts at $49 per month.

I'd love feedback from other builders. What would you want an autopilot posting tool to never do?

I'm Amit, and I'm on X at https://x.com/decoded08

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