---
title: Agent Library overview
slug: agent-platform/docs/agent-library-overview
docTags: 
createdAt: 2026-08-12T15:37:11.000Z
---

The **Agent Library** is a browsable catalog of Agent Platform agents on the [Mark chat](docId\:dtNBEttEGVvkhNkwNypLM) homepage. Browse the library to find the right agent for a task, then run it from your chat. The library displays a curated subset of the [Agents in the Agent Directory](docId\:mCCl_y-hNkhT-uKIXvReF).

## Access the Agent Library

The **Agent Library** displays on the home page of Mark chat.

1. Go to [home.optimizely.com](https://home.optimizely.com/).
2. Select your organization.
3. Click **Mark**.

![Screenshot of the Optimizely World Organization welcome page where Mark is one of the app tiles](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/IJp9Lul9HZT1dGYaFbve4_mark-card-on-welcome-back-page0.png)

Mark opens on a new Mark chat by default. The **Agent Library** is displayed on the home page:

![Screenshot of Mark chat where Agent Library displays under the chat box](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/lQDhf1InYXNGxC1o-EQsC_use-opal-agent-library0.png)

## Browse agents

Mark groups agents into tabs by the kind of work they help you do.

- **New** – Agents that Optimizely has recently released.
- **Brainstorm & Plan** – Agents that research markets and plan campaigns, such as campaign briefs and competitive insights.
- **Create** – Agents that generate content, such as blogs, emails, and social posts.
- **Experiment & Analyze** – Agents that plan experiments and interpret results.
- **Optimize** – Agents that audit and improve page performance, search engine optimization (SEO), conversion, and accessibility.
- **Productivity** – Agents that handle everyday tasks, such as summaries, translation, and meeting follow-ups.

Within each tab, agents display as cards. When a tab holds more agents than fit on one page, the library splits them across pages. Use the page controls to move between them.

![Screenshot of Agent Library where the page controls display](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/w--yXEz9wJqimdQ-AR7q6_image-2.png)

### Search agents

To find a specific agent, complete the following steps:

1. Click **Search**.

   ![Screenshot of Agent Library where the search field filters the agents](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/RGX2yn4AVp0UcXUaY-ZeJ_image-3.png)
2. Enter an agent name, tag, or keyword. The list of agents automatically updates.

![Screenshot of Agent Library where the search results display](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/s-JvAZeBiD4MZ5z80S4_M_image-4.png)

## Agent cards

Each card summarizes what the agent does.

- **Title and emoji** – A task-oriented title, such as **Build a campaign brief** paired with an emoji.
- **Description** – A short summary of what the agent does.
- **Tags** – Labels that describe the agent's channel, task type, or output format, such as **Campaign** or **Strategy**.
- **ID** – The identifier, such as `@campaign_brief_generation`, that you enter in Mark chat to invoke the agent.

![Screenshot of Agent Library where the agent cards display](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/tIEzIXlxn6rfKT79pEPz1_image.png)

## View agent details

Click an agent card to open its details and learn more about the agent before you run it. The details include the following:

- A fuller description of what the agent does.
- A **What this agent can do** list of key capabilities.
- The agent's tags and ID.

To return to the library, click **Close** or click outside the details.

![Screenshot of an agent card where the agent details display](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/bQ6M4ufMCFI_UwrecBH3e_image-1.png)

## Use an agent

To run an agent from the library, complete the following steps:

1. Click the agent card to open its details.
2. Click **Use agent**. Mark adds the agent prompt to the chat input, including its ID and the placeholders to fill in.
3. Click a highlighted placeholder, or press **Tab** to move between placeholders.

   ![Screenshot of the Mark chat box where a tagged agent adds placeholders to the prompt](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/49hp2EN1_LY10_ONZ_HOG_use-opal-agent-chat-add-agent0.png)
4. Enter your text to replace the placeholder.
5. Press **Enter** or click **Submit**. Mark runs the agent and displays the response.

To run an agent without opening the library, enter its ID, such as `@campaign_brief_generation`, in the chat input. For information about invoking agents in chat, see [Invoke agents in Mark chat](docId\:qKVmt7gL7FFivvJU30wTu).

## Agent availability

The **Agent Library** displays a curated subset of the [Agents in the Agent Directory](docId\:mCCl_y-hNkhT-uKIXvReF). Optimizely adds these agents to the Agent Library automatically, so they are available to all Mark users without an administrator installing them. Which agents you see also depends on your access to additional Optimizely products.

- **Requires no additional Optimizely products** – Display for all Mark users.
- **Requires an Optimizely product you have** – Displays for you.
- **Requires an Optimizely product you do not have** – Does not display.

## Delete an agent

To remove an agent from the **Agent Library**, delete the agent from the **Your Agents** tab. To do so, complete the following steps:

1. Click **Agents** **> Your Agents**.
2. Click the **Created by** filter drop-down list.
3. Select **Optimizely.**
4. Click **More (...) > Delete Agent**.

![Screenshot of Your Agents where the More menu of an agent is open and Delete Agent is outlined](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/u5kgz_sEitI2gEHfM7XUW_use-opal-agent-delete-agent0.png)
See [Delete a specialized agent](docId\:cFB_b7jzgV6k0Ry_cVXSS) for additional options to delete the agent.

## How is the Agent Library different from the Agent Directory?

The [Agent Directory](docId\:Xlo4rbSLRP_fxF5NlMLgG) is available to Agent Builders and Mark Administrators only. The Agent Library displays on the Mark chat home page for all Mark users and displays a curated subset of those agents, added automatically. You do not need to search for agent IDs or wait for an administrator to install an agent before you can run one from the library.

:::hint{type="info"}
**Note**

If you use Opti ID, administrators can turn off generative AI in the Opti ID Admin Center. See [Turn generative AI off across Optimizely applications](docId\:X5U0kKD2azV5cIdNqwGNj).
:::