Executive Ghostwriting Tool
Their Voice. Your Words.
Paste in your executive's strongest LinkedIn posts and PostCast will analyze their writing patterns, capture their voice, and build a content formula — so you can ghostwrite new posts that sound authentically like them.
Reading their posts
Extracting their voice, patterns, and writing style…
Parsing their post history
Identifying top-performing content
Extracting voice & style patterns
Building their post formula
Saving voice profile
✓
Their voice profile is ready.
PostCast saves their profile in this browser only — it's not stored on any server. If you clear your browser data or switch devices, you'll need to rebuild it.
We recommend downloading a copy to keep it safe.
Your raw input
03 — Choose your post
Voice profile active
Generated from your pasted LinkedIn posts
Anthropic API Key
Stored in your browser only. Get yours at console.anthropic.comPostCast uses Anthropic/Claude to analyze your text and make recommendations. Your API key gives PostCast access to your Anthropic/Claude account for this limited purpose. You may need to purchase API credits from Anthropic to use this tool.
Voice Profile / System Prompt
Auto-generated from your post history. Edit freely — this shapes every post.
Post variations