Socialnib — AI Reply Assistant for X / Twitter

AI reply assistant for X (Twitter). Thread-aware, human-sounding replies in 20 tones, dropped straight into your reply box.

Socialnib writes your reply to a post on X — inside the reply box you're already in. Click into an empty reply box and the draft is already on its way. Socialnib reads the post and the conversation around it, writes a batch of about 8 candidate replies in the tones that suit it, scores them against what you told it you're optimising for, and drops the winner in. You read it and press Reply. WHAT YOU DON'T HAVE TO DO Sign in with Google and it works. There's no API key to obtain, no model to choose, and no dashboard to configure — the AI model runs on our servers and we pick it per post, so it gets better without you reading a release note. HOW IT WORKS 1. Install and sign in with Google. 2. Click into a reply box on x.com or twitter.com. The draft appears. 3. Send it, or press the coral icon to see every reply written for that post in one keyboard-navigable table. FEATURES • Drafts before you ask — no modal, no clicking, no waiting • Thread-aware: it reads the conversation, so it doesn't restate the post back at you • 20 tones, each written in 2 shapes — one that ends on a real question, one that says the thing and stops • A judging pass ranks the batch instead of handing you the first thing a model said • Your voice, set once: default tone, what you actually use and have built, and house rules like "never open with Great point" • Keyboard shortcut drafting with no UI at all (Cmd+Shift+Y, or Ctrl+Shift+Y on Windows) • History and favourites, stored on your machine • Light and dark, following your OS TWO THINGS IT WILL NEVER DO It never posts on your behalf. It writes into the composer and stops; you press the button. Automating engagement breaks X's rules and gets accounts suspended. It never overwrites what you've typed. It only writes into a completely empty reply box, and it re-checks the box immediately before writing — start typing mid-draft and the write is abandoned rather than finished over the top of you. WHAT IT SENDS, AND WHAT IT DOESN'T To write a reply, Socialnib sends the post, the surrounding conversation, your X handle and your voice settings to its own API at api.socialnib.com. That content is not stored after the request and is not used to train models. Your history, favourites and settings stay in your browser and are never sent anywhere. The extension only runs on x.com and twitter.com — it cannot see your other tabs. Full detail: https://socialnib.com/legal/privacy-policy PRICING The first 100 generations are free, with no card. One generation writes a batch of about 8 replies for one post. They're a one-time allowance rather than a daily one: they never expire, and they don't come back. A paid plan is planned but is not available to buy yet. https://socialnib.com/pricing Works in Chrome, Edge, Brave, Arc and Opera. Not affiliated with X Corp.