# Agent ModeAgent Mode is Nova's default chat mode for building or modifying websites and web apps directly from a prompt with no separate planning step. Users enable it via the chat mode selector and click Start Building. The page covers using Improve Prompt for more specific results, troubleshooting scenarios including out of credits or project results not matching expectations, and options to reply in chat, refine the prompt, or switch to Plan Mode.

Agent Mode is the default chat mode in Nova. It uses the information in your prompt to build and modify your project. We recommend that you use [Improve Prompt](/en/features/create/improve-prompt/) while in Agent Mode to structure your prompt and generate more specific outcomes.

Agent Mode works best when you want to generate your next project from a strong prompt. Common uses include:

- Building a first draft of your website or web app.
- Making small, iterative changes to an existing project.
- Continuing work after approving a plan in [Plan Mode](/en/features/create/plan-mode/).

## Using Agent Mode

To enable Agent Mode, open the chat mode selector in the prompt toolbar and choose _Agent_ (![agent mode icon](/images/icons/bot-icon.svg)).

<img src="/images/agent-mode.png" alt="Chat Mode selector set to Agent Mode" />

Then, enter a prompt describing your website or web app and click _Start Building_. For example, you could enter this prompt to build a simple, well-defined page directly:

{{< nova-prompt>}}

Build a landing page for a local yoga studio with a class schedule, an About section, and a signup form for a free trial class. Use a calm, minimal design with soft greens and plenty of white space.

{{< /nova-prompt >}}

For more information about building with Nova, read our [Getting Started](/en/features/create/getting-started/) documentation.

## Troubleshooting

### Your project doesn't start building after you click Start Building

If Nova does not start building after you click _Start Building_, you may be out of credits. You can see your credit balance and refresh date in the _Account Menu_. For more information, read our [Billing and AI Credits](/en/welcome/billing-and-ai-credits/) documentation.

### Your project doesn't match what you expected

If the result doesn't match what you wanted:

- Reply in chat with the missing details so Nova can regenerate the affected parts.
- Use [Improve Prompt](/en/features/create/improve-prompt/) to add more detail and structure to your prompt before you try again.
- For more control before building, switch to [Plan Mode](/en/features/create/plan-mode/) to review and approve an implementation plan first.