Algo Fit

Score X drafts against public For You signals before you post — BYOK TypeSafe Jev. Signal-fit guidance, not an exact rank. Algo Fit helps you improve an X draft before you post. It scores your draft against publicly documented For You signal families using your own TypeSafe.ai API key (Jev), then suggests what to change. This is signal-fit guidance — not an exact For You rank, not guaranteed reach, and not a claim that X’s full ranking stack runs in the extension. How it works 1. Install Algo Fit and open x.com (or twitter.com). 2. Open Settings and paste your TypeSafe API key (stored only in this browser via chrome.storage.local). 3. Write or edit a draft in the X composer. 4. Click Check to score. Optionally turn on Auto-check to score after you pause typing. 5. Use Improve for rewrite candidates scored with the same Jev path. 6. You post — Algo Fit never auto-posts, never needs your X password, and never touches cookies or session tokens. Where it appears • Under the composer (default), or • A right-edge drawer on x.com with Results, Compose, and Settings Pick one placement in Settings — they do not run at the same time. Honesty For You ranking is personalized. Algo Fit estimates fit to published signal families so you can edit with intent. It does not promise impressions, monetization eligibility, or an exact rank. Privacy Draft text leaves your device only when you run Check / Improve (or Auto-check if enabled), and only to api.typesafe.ai with your key. Optional public GitHub requests show algorithm / version pins. See the Privacy policy linked on this listing.