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

> @mount("ft4.get_ auth_ handler_ for_ operation")
query get_ auth_ handler_ for_ operation(op_ name: text): _ auth_ handler_ client Retrieves the auth handl

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.external.auth/get_auth_handler_for_operation/

QUERY

# get\_auth\_handler\_for\_operation

```signature
@mount("ft4.get_auth_handler_for_operation")
query get_auth_handler_for_operation(op_name: text): _auth_handler_client
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/external/auth/queries.rell#lines-86)

Retrieves the auth handler that must be used to authorize a certain operation.

Throws if `op_name` is not valid or no auth handler can be found for it.

**Parameters**

* **op\_name** — the mount name of the operation

**See Also**

* `_auth_handler` — for more information on auth handlers

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