# AI Agent Version History: Compare and Restore Versions

See every published version of an AI agent, preview an older version, and restore it to your working copy.

> Source: https://www.robylon.ai/docs/ai-agents/version-history
> Section: AI agents

Every time you publish an AI agent, Robylon saves a copy of that version. Version history lets you see what an agent looked like at any point, and bring an older version back if a change made things worse.

Open an agent from **Settings → Workflows & AI Agents → AI Agents**, then click the **History** icon (the clock) at the top of the agent panel.

Workflows have their own, separate history. See [workflow version history](https://www.robylon.ai/docs/product/version-history).

## How do drafts and published versions work?

Each agent has two current versions:

* **Working Copy:** the draft you edit. Changes you save here do not reach customers. It shows **Not published yet** until you publish it.
* **Live:** the version customers are talking to right now. It is read-only.

When you publish the working copy, it becomes the new live version and the previous live version moves to **Previous Versions**. Each version shows its name and when and by whom it was published, for example "Published at Sep 11 by Alex".

When you pause a live agent, the latest version is marked as unpublished and the agent stops answering customers.

## How do I look at an older version?

Click the version in the **Version History** panel. The agent panel switches to that version's instructions, tools, user info and model settings so you can read them. Nothing changes until you restore it.

<Frame>
  <img src="/assets/docs/app-agent-version-history.webp" alt="AI agent Version History panel showing the working copy, the live version and previous versions" width="2160" height="1350" />
</Frame>

## How do I restore an older version?

Restoring copies the older version into your working copy. You then publish it to make it live.

<Steps>
  <Step title="Open the version">
    In **Version History**, click the version you want, or open its menu (**⋮**).
  </Step>
  <Step title="Restore it">
    Click **Restore**, or **Restore this version** from the menu. The version's settings replace your working copy.
  </Step>
  <Step title="Check and publish">
    Review the working copy, then publish it. Until you publish, customers keep talking to the current live version.
  </Step>
</Steps>

<Danger>
Restoring overwrites your working copy. If you have unpublished changes you want to keep, note them down before you restore.
</Danger>

## What does a version include?

A version saves the agent's full configuration at the moment it was published: its instructions, custom instructions, user info, the tools it uses, the agents it can hand over to, its channels and its model settings.

A version records which tools the agent uses, not the tools' own settings. Changes you save to a tool in **Settings → Data & Developer → Tools** apply straight away, and restoring an older agent version does not undo them.

## Can I name a version?

Yes. When you click **Publish**, enter a name under **New Version**. Robylon suggests one based on the date and time, such as `v1_20260911_101940`, and you can replace it with your own, such as "Added refund steps". Versions published without a name get one automatically, such as `v-20260911-101940`.