> For the complete documentation index, see [llms.txt](https://docs.snyk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snyk.io/scan-fix-and-prevent/scan-with-snyk/snyk-iac/current-iac-custom-rules/writing-rules-using-the-sdk.md).
# Writing rules using the SDK
How to write Snyk IaC custom rules using the SDK
{% hint style="info" %}
**Snyk is rolling out a new navigation.** The steps on this page describe the classic interface. If your view looks different, visit [Navigate the Snyk Web UI](https://docs.snyk.io/navigate-the-snyk-web-ui#where-things-moved) to map these options to the new interface.
{% endhint %}
## Writing rules using the SDK
To get you started with the SDK, you will learn how to:
1. [Parse a fixture file](/scan-fix-and-prevent/scan-with-snyk/snyk-iac/current-iac-custom-rules/writing-rules-using-the-sdk/parsing-an-input-file.md), to help you understand how to write a rule.
2. [​Write a rule with the SDK](/scan-fix-and-prevent/scan-with-snyk/snyk-iac/current-iac-custom-rules/writing-rules-using-the-sdk/writing-a-rule.md) using Rego.
3. [Add unit tests for the rules you have written](/scan-fix-and-prevent/scan-with-snyk/snyk-iac/current-iac-custom-rules/writing-rules-using-the-sdk/testing-a-rule.md) to verify your rules.
4. [Build a bundle containing your custom rules](/scan-fix-and-prevent/scan-with-snyk/snyk-iac/current-iac-custom-rules/writing-rules-using-the-sdk/bundling-rules.md) so that you can [use it with the Snyk CLI](/scan-fix-and-prevent/scan-with-snyk/snyk-iac/current-iac-custom-rules/use-iac-custom-rules-with-cli.md).
5. [Push the bundle containing your custom rules to a container registry](/scan-fix-and-prevent/scan-with-snyk/snyk-iac/current-iac-custom-rules/writing-rules-using-the-sdk/pushing-a-bundle.md) so that you can [enforce its usage with the Snyk CLI](/scan-fix-and-prevent/scan-with-snyk/snyk-iac/current-iac-custom-rules/use-iac-custom-rules-with-cli.md).
Development to distribution workflow
---
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