---
description: Terraform examples for managing and configuring leaked credentials detection.
title: Terraform configuration examples
image: https://developers.cloudflare.com/og-docs.png
---

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# Terraform configuration examples

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/waf/detections/leaked-credentials/terraform-examples/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

The following Terraform configuration examples address common scenarios for managing, configuring, and using leaked credentials detection.

For more information, refer to the [Terraform Cloudflare provider documentation ↗](https://registry.terraform.io/providers/cloudflare/cloudflare/latest/docs).

If you are using the Cloudflare API, refer to [Common API calls](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/waf/detections/leaked-credentials/api-calls/).

## Enable leaked credentials detection

Use the `cloudflare_leaked_credential_check` resource to enable leaked credentials detection for a zone. For example:

```terraform
resource "cloudflare_leaked_credential_check" "zone_lcc_example" {
	zone_id = var.cloudflare_zone_id
	enabled = true
}
```

## Configure a custom detection location

Use the `cloudflare_leaked_credential_check_rule` resource to add a custom detection location. For example:

```terraform
resource "cloudflare_leaked_credential_check_rule" "custom_location_example" {
	zone_id = var.cloudflare_zone_id
	username = "lookup_json_string(http.request.body.raw, \"user\")"
	password = "lookup_json_string(http.request.body.raw, \"secret\")"
}
```

You only need to provide an expression for the username in custom detection locations.

## Add a custom rule to challenge requests with leaked credentials

This example adds a [custom rule](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/waf/custom-rules/) that challenges requests with leaked credentials by using one of the [leaked credentials fields](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/waf/detections/leaked-credentials/#leaked-credentials-fields) in the rule expression.

To use the [cf.waf.credential\_check.username\_and\_password\_leaked](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.waf.credential%5Fcheck.username%5Fand%5Fpassword%5Fleaked/) field you must [enable leaked credentials detection](#enable-leaked-credentials-detection).

Required API token permissions

At least one of the following [token permissions](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/fundamentals/api/reference/permissions/) is required:

* `Zone WAF Write`

Configure the [cloudflare\_ruleset ↗](https://registry.terraform.io/providers/cloudflare/cloudflare/latest/docs/resources/ruleset) resource:

```tf
resource "cloudflare_ruleset" "zone_custom_firewall_leaked_creds" {
  zone_id     = var.cloudflare_zone_id
  name        = "Phase entry point ruleset for custom rules in my zone"
  description = ""
  kind        = "zone"
  phase       = "http_request_firewall_custom"

  rules = [{
    ref         = "challenge_leaked_username_password"
    description = "Challenge requests with a leaked username and password"
    expression  = "(cf.waf.credential_check.username_and_password_leaked)"
    action      = "managed_challenge"
  }]
}
```

```tf
resource "cloudflare_ruleset" "zone_custom_firewall_leaked_creds" {
  zone_id     = var.cloudflare_zone_id
  name        = "Phase entry point ruleset for custom rules in my zone"
  description = ""
  kind        = "zone"
  phase       = "http_request_firewall_custom"

  rules {
    ref         = "challenge_leaked_username_password"
    description = "Challenge requests with a leaked username and password"
    expression  = "(cf.waf.credential_check.username_and_password_leaked)"
    action      = "managed_challenge"
  }
}
```

## More resources

For additional Terraform configuration examples, refer to [WAF custom rules configuration using Terraform](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/terraform/additional-configurations/waf-custom-rules/).

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