linter-rule-no-explicit-any.md

title	Linter rule - no explicit any
description	Linter rule - no explicit any
ms.topic	reference
ms.custom	devx-track-bicep
ms.date	10/23/2025

Linter rule - no explicit any

This rule discourages the use of the any type in Bicep files.

Linter rule code

Use the following value in the Bicep configuration file to customize rule settings:

no-explicit-any

Solution

Using any disables type checking and removes the benefits of Bicep's strong typing system. This can lead to runtime deployment errors that could have been caught earlier by the compiler. Instead of any, specify a more precise type such as string, int, bool, array, object, and so on. This helps ensure your templates are predictable and maintainable. For more information about Bicep types, see Data types in Bicep.

The following example fails this rule:

param inputValue any

You can fix it by declaring a specific type:

param inputValue string

Next steps

For more information about the linter, see Use Bicep linter.