> ## Documentation Index
> Fetch the complete documentation index at: https://docs.viorant.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# The Masters

> The authoring surfaces you build agents from.

A **Master** is a first-class editor for one aspect of an agent. Each Master owns one
kind of resource and gives it a purpose-built authoring experience.

| Master            | What you author                                                                         |
| ----------------- | --------------------------------------------------------------------------------------- |
| **Prompt Master** | Instructions and reasoning — system/user sections, variables, single-shot or chat mode. |
| **Model Master**  | Providers and models — the vendor account (with your key) and per-model settings.       |
| **Skill Master**  | Skills — reusable tasks and the tools they use.                                         |
| **Agent Master**  | The composition — a Prompt + a Model + Skills assembled into one runnable agent.        |

You open each of these by opening the asset itself inside a
[Space](/concepts/spaces) — the editor you get matches the kind of file, so a prompt
opens the prompt editor and an agent opens the composition canvas. See
[Tabs & editors](/concepts/tabs-and-editors).

<Note>
  A fifth Master — **[Memory](/masters/memory)** — is planned and **not available
  yet**. Nothing in the Hub ships it today.
</Note>

Each Master is documented in detail under [**The Masters**](/masters/prompt).