---
description: Define a delay to be used when incoming requests match a rule you consider suspicious based on the bot score.
title: Slow down suspicious requests
image: https://developers.cloudflare.com/og-docs.png
---

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# Slow down suspicious requests

Define a delay to be used when incoming requests match a rule you consider suspicious based on the bot score.

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/rules/snippets/examples/slow-suspicious-requests/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

## Snippet code

```js
export default {
	async fetch(request) {
		// Define delay
		const delay_in_seconds = 5;
		// Introduce a delay
		await new Promise((resolve) =>
			setTimeout(resolve, delay_in_seconds * 1000),
		); // Set delay in milliseconds

		// Pass the request to the origin
		const response = await fetch(request);
		return response;
	},
};
```

## Snippet rule

Configure a custom filter expression:

| Field     | Operator  | Value |
| --------- | --------- | ----- |
| Bot Score | less than | 10    |

If you are using the Expression Editor, enter the following expression:

```txt
(cf.bot_management.score lt 10)
```

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```