Auth hook custom error message

Hi devs,

I'm facing an issue where I can't set a custom response message from my auth hook.

**My understanding of the system:**

**response code 401:**
returns **"Authentication hook unauthorized this request"** as error message
[401 error ](
https://github.com/hasura/graphql-engine/blob/2152911e240627add0a5b6b69b052efaa924c338/server/src-lib/Hasura/Server/Auth/WebHook.hs#L128
)

**response code anything other than [401,200]:**

returns a 500 error with this message: **"Invalid response from authorization hook"**
[500 error](https://github.com/hasura/graphql-engine/blob/2152911e240627add0a5b6b69b052efaa924c338/server/src-lib/Hasura/Server/Auth/WebHook.hs#L132)

I'm receiving my custom error message in Hasura server logs but not in response.

Is there any solution to receive a custom error message instead of these predefined ones?

thanks a lot

Start with server/src-lib/Hasura/Server/Auth/WebHook.hs at the response handling around the linked lines. Trace how authentication-hook responses become GraphQL API errors and check for related tests or response fixtures. Done means the intended custom error-message behavior is defined and covered for unauthorized and other invalid hook responses.

Written by the indexing model from the issue text.