# is_active · FT4 Rell API · Chromia Docs (concept)

> function is_ active(account_ auth_ descriptor: account_ auth_ descriptor ): boolean Checks whether all the rules of the auth descriptor are active. Can onl

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.accounts/is_active/

FUNCTION

# is\_active

```signature
function is_active(account_auth_descriptor: account_auth_descriptor): boolean
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/accounts/auth_descriptor_rule_validation.rell#lines-210)

Checks whether all the rules of the auth descriptor are active.

Can only be called in an operation.

An inactive rule cannot be valid, and it cannot have expired yet. This allows skipping
some checks.

Throws when `rules` is not the valid GTV representation of a rule.

**Parameters**

* **account\_auth\_descriptor** — the descriptor to check

**See Also**

* [rule\_expression](https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.accounts/rule_expression/) — for a definition of validity, expiration and activity.
* [account\_auth\_descriptor.rules](https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.accounts/account_auth_descriptor/) — for the list of valid GTV representations of rules.

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.core.accounts/is_active.html)Generated API reference, mirrored from the live docs