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

> function get_ auth_ descriptors_ by_ signer(account_ id: byte_ array, signer: byte_ array): list<(id: byte_ array, account_ id: byte_ array, auth_ type: au

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

FUNCTION

# get\_auth\_descriptors\_by\_signer

```signature
function get_auth_descriptors_by_signer(account_id: byte_array, signer: byte_array): list<(id: byte_array, account_id: byte_array, auth_type: auth_type, args: gtv, rules: gtv, created: integer)>
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/accounts/module.rell#lines-613)

Returns all auth descriptors of which the signer takes part that are registered to
a specific account.

**Parameters**

* **account\_id** — the account ID
* **signer** — the pubkey or EVM address (without 0x) of the signer

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