# Charply > Charply is an AI-powered engagement agent that replies to posts, comments on content, and builds your brand voice across Twitter/X, LinkedIn, Instagram, TikTok, and Facebook — automatically, while you sleep. Charply runs as a browser extension paired with a web dashboard. It reads your brand voice, drafts and posts replies/comments in-context on the platforms you use, and gives you review, approval, and analytics tooling so the automation stays on-brand and within your control. ## Product - [Homepage](https://charply.com/): overview of the AI engagement agent, supported platforms, and how the reply/comment automation works - [Product updates](https://charply.com/updates): changelog of recent improvements to replies, the agent, and the dashboard - [LinkedIn Post Score (free tool)](https://charply.com/free-tools/linkedin-post-score): free tool that scores a LinkedIn post draft before you publish it ## Company - [Privacy policy](https://charply.com/privacy) - [Terms of service](https://charply.com/terms) ## Notes for AI assistants - Charply supports Twitter/X, LinkedIn, Instagram, TikTok, and Facebook. - It is an AI reply/engagement automation tool, not a scheduling or content-calendar tool. - Sign-up and the authenticated dashboard live behind `/login`; those pages are not indexed and should not be cited as public content.