Custom GPT actions not working anymore

GPT builders Plugins / Actions builders
1

My custom build GPT’s actions are all of a sudden not working anymore. It asks for approval, I give approval, and then it asks for approval again.

I checked the actual sever logs that the action should call and no actual requests are being made.

Everything was working fine until this morning.

No changes were made to the GPT

2

Are you trying to connect to Power Automate flows? Our connections to Power Automate have also stopped working today. The GPT repeatedly asks for approval, but no request reaches the flow.

3

I’m seeing what appears to be the same issue today.

I have two unrelated Custom GPTs that use Actions to call Google Apps Script endpoints and write to Google Sheets. Both were working previously, no GPT or backend changes were made, and both began failing around the same time.

The symptoms are:

  • The GPT recognizes that the Action exists.
  • It may ask for approval repeatedly or respond as though it cannot invoke the Action.
  • No request appears in the Apps Script execution logs.
  • The same Apps Script endpoints and Sheets still work through other access paths.

Because no request reaches the server, this does not appear to be an Apps Script, authentication, or response-format failure in my case. The request seems to be stopping before it leaves the Custom GPT Action runtime.

I found two temporary workarounds:

  1. Start a normal ChatGPT conversation, type @, select the Custom GPT, and invoke the Action from that conversation. This successfully dispatched the request and wrote to my Sheet.
  2. Where available, use an authorized Google Drive/Sheets connector to update the Sheet directly, bypassing the Custom GPT Action and Apps Script endpoint.

The first workaround is the closest substitute because it still uses the GPT’s configured Action. I would avoid changing a previously working backend until checking whether the failed attempt appears in the server logs. If there is no incoming request at all, the issue is likely upstream of the endpoint.

It would be helpful if others could report:

  • Which model/runtime the GPT is using
  • Whether approval loops repeatedly
  • Whether any request reaches the server
  • Whether invoking the GPT through @ in a normal chat works

This looks broader than a single integration, since this thread already includes both a custom server integration and Power Automate reporting the same “approval but no request” behavior.