PostPilot for X

Score every X post as you type — AI rewrites, thread scoring, voice coaching, and a hook library that learns what works for you.

PostPilot scores your X/Twitter posts in real time before you hit send. Most posts underperform because of weak hooks, vague claims, or length issues that are obvious in hindsight. PostPilot surfaces these problems while you're still writing, so you can fix them instead of wondering why a post flopped. WHAT IT DOES As you type, PostPilot overlays a score panel on the X composer showing: • Hook analysis — detects your hook type (curiosity gap, data reveal, contrarian, etc.) and scores its strength • Specificity scoring — flags vague language and rewards concrete claims, numbers, and named references • Length optimization — guides you toward the character ranges that perform best • Curiosity gap detection — identifies whether your post creates enough tension to earn the click or the read • Governor warnings — catches structural patterns known to suppress engagement AI REWRITES (FREE) When a post isn't landing, PostPilot can rewrite it for you. One click generates an improved version using your score and governor issues as context — so the suggestion actually addresses what's wrong, not just a generic rewrite. Bring your own Claude API key (pay-as-you-go; typical usage costs a few cents per month). POSTPILOT PRO Upgrade to Pro to unlock: • 3 AI rewrite variants — each targets a different hook type so you can choose the angle that fits • Voice fingerprinting — PostPilot learns your personal writing style and adjusts scoring to your voice, not a generic template • Learning engine — analyzes your past post performance to identify what actually works for your specific audience • 3 AI rewrite variants — each targets a different hook type so you can choose the angle that fits • Voice fingerprinting — PostPilot learns your personal writing style and adjusts scoring to your voice, not a generic template • Learning engine — analyzes your past post performance to identify what actually works for your specific audience • Thread scorer — scores each tweet in a thread individually and flags your weakest link • Viral Post Analyzer — see a PostPilot score and hook type on every post in your feed. Every viral post becomes a lesson. • Hook Library — save your best-performing openers and remix them when you're stuck PRIVACY Everything stays on your device. PostPilot reads only what's on your screen and stores all data locally — scores, drafts, hooks, and your voice fingerprint never leave your browser. The extension makes exactly two kinds of network calls: license validation (Pro only), and AI rewrites you explicitly request, which send your draft directly to Anthropic using your own API key. No data is ever sent to PostPilot servers — none exist. Works on x.com.