PostyAI

A LinkedIn post generator that scores the draft it just wrote, so the guess about engagement happens before you publish.

Every AI writing tool will hand you a post. None of them will tell you whether it is any good.

PostyAI writes the draft, then runs it back through a model trained on engagement outcomes.

That score is a Random Forest over 60 plus features: readability, sentiment, hook structure, emoji and hashtag density.

It was the best of nine candidates I trained. The other eight did not ship.

70%

Engagement-class accuracy, Random Forest

60+

Features extracted per post

2.4s

Average generation time, measured in-product

9

Models trained. One shipped.

Four inputs, and no prompt box

Dropping the free-text prompt was the decision that made the rest work.

A model cannot score a draft whose shape changes on every run, so constraining the input is what made it measurable.

Nobody writes one post

Content work arrives as a campaign, so batch generation produces a set against the same settings and scores each one.

You pick from five instead of regenerating until something lands.

70% accuracy means nothing without the baseline it beat, and that is the first thing I would publish.

The second is an explanation. The engagement score is a bare number, and a number you cannot interrogate is one you stop trusting.