# Promptbook: Invisible AI Agents

A platform for defining persistent AI agents in a plain-language format called Books, then deploying them to an Agents Server where they run continuously, remember context and work in teams.

Promptbook lets you define AI agents using "Books", a human-readable, explicit language for describing an agent's goal, rules and knowledge sources, meant to be easier to write and maintain than raw prompts.

Agents are deployed to the Agents Server, where they run persistently, remember context, collaborate with other agents, and carry out ongoing goals rather than answering single requests. A standalone installer sets up the server on a fresh VPS in interactive or non-interactive mode, with environment presets for preview, production or long-term-support deployments; providing an OpenAI API key configures the default OpenAI Codex runner automatically, and other model runners can be configured afterward from the UI or over SSH.

It is written in TypeScript.

Website: https://ptbk.io