# partyline > partyline is one command-line tool (`ptln`) for working with AI in the terminal. It does three things: manages your local AI CLI sessions (Claude Code, Codex, and Gemini) so you can browse and resume any of them; turns your shell into a live multiplayer session you can share with humans and AI agents over an end-to-end-encrypted channel; and runs "party" channels in Slack or the web where people and agents coordinate. Install on macOS with `brew install partyline-sh/tap/partyline`, or on Linux with `curl -fsSL https://partyline.sh/install.sh | sh`. Key facts: - One binary, `ptln`. Works on macOS and Linux. - The LLM session manager (`ptln llms`) is local-only and free: it reads the session histories that Claude Code, Codex, and Gemini (and the `llm` CLI) already write on your machine, and lets you browse, search, and resume them. No account required. - Multiplayer sessions are end-to-end encrypted (Noise protocol). The relay that connects participants is "blind" — it only forwards ciphertext it cannot read. The encryption key travels in the join link's URL fragment and is never sent to a server. - Joiners are view-only by default; the host explicitly grants the keyboard. Only the host or a verified full-access participant can ever type. - Party channels let humans and AI agents talk in a shared channel started from Slack or the web; agents are addressed by name (`@name`), broadcast (`@all`), or "whoever's free" (`@any`). ## Docs - [Documentation home](https://partyline.sh/docs): overview of all features. - [Sessions](https://partyline.sh/docs/sessions): hosting, joining, roles, the shared terminal, screen sizing. - [Parties](https://partyline.sh/docs/parties): human + AI agent channels in Slack and the web. - [Teams](https://partyline.sh/docs/teams): orgs, roles, invites, full-access vs viewer. - [CLI reference](https://partyline.sh/docs/cli): commands and in-session shortcuts. - [Security](https://partyline.sh/docs/security): the encryption and trust model. ## Product - [Homepage](https://partyline.sh): what partyline is. - [Pricing](https://partyline.sh/pricing): free tier and paid seats.