About

PostLint scores LinkedIn posts 0-100 on how well they're written. The feedback is direct and sometimes harsh. It's a lint check for your post, not a writing coach.

How it works

Paste a post, get a score. The scoring runs on a detailed rubric we built on top of Anthropic's Claude. We wrote the criteria. Claude applies them. Your post is not stored or tracked.

What we check

  • Authenticity (25 pts): Does this come from real experience or genuine expertise?
  • Hook (20 pts): Does the opening earn the reader's attention honestly?
  • Substance (20 pts): Is there actual insight, or is this 200 words of nothing?
  • Readability (15 pts): Is it clear and well-structured?
  • Human Score (20 pts): Does it avoid AI-sounding phrases and LinkedIn clichés?

Privacy

  • Your post gets sent to Anthropic's Claude API for scoring, then discarded
  • We don't save anything on our end
  • No accounts, no cookies
  • Privacy-friendly analytics via Plausible (no personal data collected)
  • Your browser holds the post in localStorage during analysis
  • IP addresses are used briefly for the 3/day rate limit, then forgotten. Not logged anywhere.

Your post is processed by Anthropic's Claude API, which has its own privacy policy. We send the text, get the score, and move on.

Disclaimer

Scores are AI-generated opinions for entertainment and educational purposes. This isn't professional writing advice. Use at your own discretion.

Built by Tom Coffman.

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