Shiftr — AI Post Helper

Ghostwrite posts in your voice on X, Reddit, Facebook, YouTube, and LinkedIn — plus comments and replies. Bring your own model.

Shiftr writes social-media posts, comments, and replies in YOUR voice — not generic AI prose. Paste in a few of your own posts as voice samples, pick an AI model, and the extension ghostwrites for you on the sites you actually use. WHY SHIFTR • Sounds like you. Every generation includes your writing samples in the prompt as few-shot examples, so the AI mimics your cadence, vocabulary, and tone instead of producing generic output. Pick samples that genuinely sound like you and the results follow. • Bring your own model. Anthropic, OpenAI, OpenRouter, or your own local Ollama instance — Shiftr talks to whichever AI service you already have a key for. No proxy, no middleman. • Multi-persona. Keep separate voices for separate audiences — a serious LinkedIn persona, a sharper X persona, whatever you need. Switch in one click. • Works where you write. A small Shiftr button slides in next to the comment box on X, Reddit, Facebook, YouTube, and LinkedIn. Click, get a draft, edit if needed, insert. HOW IT WORKS 1. Connect an AI model — paste an API key from any supported provider (or point at your local Ollama). 2. Create a persona — short bio in your own words, plus up to 4 sample posts and 4 sample comments you've actually written. Those samples are what the model imitates. 3. Browse normally. On any supported site, the Shiftr button appears next to the composer. One click, one draft. Insert, tweak, post. WHAT SHIFTR DOES NOT DO • It doesn’t post for you. You always review and click Post yourself. • It doesn’t send your data to us. There is no Shiftr server. API keys and history live in your browser. The text Shiftr generates goes straight from your browser to your chosen AI provider. • It doesn’t do subscriptions. One-time license, $49, yours forever — including all future updates. FREE VS LICENSED Free: 1 persona, 1 model provider. Full feature set on that one persona — including profile import on X and Reddit to bootstrap it from your own past posts. Licensed ($49 one-time): unlimited personas and providers, plus every future feature. No subscription. SUPPORTED SITES • X (twitter.com / x.com): posts, replies, quote tweets, profile scrape • Reddit: comments, replies, post composer, profile scrape • Facebook: post composer, comments • YouTube: comments, replies • LinkedIn: comments, replies, Start-a-post modal SUPPORTED AI PROVIDERS • Anthropic (Claude) • OpenAI • OpenRouter (access dozens of models with one key) • Ollama (local — no API key, fully private) PRIVACY • No analytics. No telemetry. No first-party server. • API keys and license keys stay in chrome.storage on your device. • Generation history is local, 30-day rolling window. Delete anytime. • The only third party Shiftr talks to (besides your own AI provider) is LemonSqueezy — and only for license activation if you buy. • Full policy linked from the listing. LICENSE ACTIVATION If you’ve already purchased: open the popup → Personas → click any locked persona → paste your license key. One activation per browser. FEEDBACK & SUPPORT Found a bug or want a feature? Email jtyszkiew@gmail.com. This is a small project — your feedback actually changes things.