List Operators

List operators check whether a value exists in a set or whether a collection contains a value.

Is In

Check if a value is one of a set of allowed values:

__role__ of **User** is in ["admin", "moderator", "editor"]

Interactive Example

Reset

Policy Rule

A **User** has edit access if __role__ of **User** is in ["admin", "moderator", "editor"].

Test Data (JSON)

{ "User": { "role": "moderator" } }

▶ Run

Works with numbers too:

Interactive Example

Reset

Policy Rule

A **Product** is featured if __category_id__ of **Product** is in [1, 5, 12, 20].

Test Data (JSON)

{ "Product": { "category_id": 5 } }

▶ Run

Is Not In

Check if a value is not in a set (blocklist):

__status__ of **User** is not in ["banned", "suspended", "deleted"]

Interactive Example

Reset

Policy Rule

A **User** is allowed if __status__ of **User** is not in ["banned", "suspended", "deleted"].

Test Data (JSON)

{ "User": { "status": "active" } }

▶ Run

Contains

Check if a string or collection contains a value:

__tags__ of **Article** contains "featured"

Interactive Example

Reset

Policy Rule

A **Article** is highlighted if __title__ of **Article** contains "breaking".

Test Data (JSON)

{ "Article": { "title": "breaking news: policy engine released" } }

▶ Run

Summary

Operator	Use case
is in [...]	Value is one of a set (allowlist)
is not in [...]	Value is none of a set (blocklist)
contains	String/collection contains a value