# MCP oauth working perfectly via API or Agent Builder, but getting "Connector not safe" via dev method on frontend **URL:** \ **Category:** Bugs\ **Tags:** mcp\ **Created:** [October 16, 2025, 8:28am UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705 "2025-10-16T08:28:14Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Roy\_Cohen](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/roy_cohen/32/690436_2.png) [@Roy\_Cohen](https://community.openai.com/u/Roy_Cohen)\ **Post date:** [October 16, 2025, 8:28am UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/1 "2025-10-16T08:28:14Z")
Hello, I keep getting this error, we are using Oauth and it works perfectly with claude AND chatgpt via api. So I’m just assuming that it’s something on your all’s end or could anyone help me? ---
**Author:** ![Recordo](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/recordo/32/511813_2.png) [@Recordo](https://community.openai.com/u/Recordo)\ **Post date:** [October 17, 2025, 8:25am UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/2 "2025-10-17T08:25:44Z")
Same here, it seems to connect properly, get 200 from my MCP endpoi nt etc. . Any ideas? ---
**Author:** ![Recordo](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/recordo/32/511813_2.png) [@Recordo](https://community.openai.com/u/Recordo)\ **Post date:** [October 17, 2025, 8:37am UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/3 "2025-10-17T08:37:24Z")
Because it fails at listing tools (server shows as “Connected” in chatgpt for me), I thought it may be related to securitySchemes (developers. openai. com. apps-sdk/build/auth) But I wasn’t able to figure out how to use them properly. securitySchemes are not available in MCP TS SDK, so that code listed on that page just won’t compile ---
**Author:** ![Roy\_Cohen](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/roy_cohen/32/690436_2.png) [@Roy\_Cohen](https://community.openai.com/u/Roy_Cohen)\ **Post date:** [October 17, 2025, 9:00am UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/4 "2025-10-17T09:00:01Z")
I actually also tried this and it didn’t work. I havne’t been able to get any help from anyone, this is the 4th time I’ve tried. ---
**Author:** ![BranchManager69](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/branchmanager69/32/624650_2.png) [@BranchManager69](https://community.openai.com/u/BranchManager69)\ **Post date:** [October 18, 2025, 8:06am UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/5 "2025-10-18T08:06:14Z")
I’ve been experiencing this intermittently, but here’s the extremely rigorous way that I solved it (for now)… > _Do it over and over and over again until it works._ I’m serious. I cannot discern the pattern that causes it, but around three to 10 attempts does the trick. I’ve been doing this for last ~3 days. Sometimes if I delete it and then add it again it will fail but then if I click refresh 5 times over the course of two minutes it then magically populates the tools and they work perfectly in chats as far as I can tell. The only variables that I have ever touched in this sequence are sometimes I will flip developer mode on and off or sometimes I will ensure that I am logged in with the Oauth provider _before_ initiating the MCP connection (rather than logging in _during_ the oauth flow). No idea if is logical since the error displayed is so poor (“unsafe,” that’s it? really?) but it works for me. For what it’s worth, even after it successfully loads the tools, you might click the refresh button 2 minutes later and it will give you the same unsafe notification but the tools will still be listed and it will otherwise have no effect on your ability to use them, so the notification is inert and baffling at that point. ---
**Author:** ![Roy\_Cohen](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/roy_cohen/32/690436_2.png) [@Roy\_Cohen](https://community.openai.com/u/Roy_Cohen)\ **Post date:** [October 18, 2025, 9:17am UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/6 "2025-10-18T09:17:32Z")
Lmao didn’t work for me. But whatever. Hopefully someone at OpenAI responds to this. ---
**Author:** ![Nintu](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/nintu/32/692624_2.png) [@Nintu](https://community.openai.com/u/Nintu)\ **Post date:** [October 22, 2025, 7:42pm UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/7 "2025-10-22T19:42:15Z")
Same thing here. My MCP works everywhere except for as a GPT connector… ---
**Author:** ![Nintu](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/nintu/32/692624_2.png) [@Nintu](https://community.openai.com/u/Nintu)\ **Post date:** [October 22, 2025, 7:48pm UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/8 "2025-10-22T19:48:27Z")
Can also confirm that brute forcing it did not work for me 🤣 ---
**Author:** ![Roy\_Cohen](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/roy_cohen/32/690436_2.png) [@Roy\_Cohen](https://community.openai.com/u/Roy_Cohen)\ **Post date:** [October 29, 2025, 2:55am UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/9 "2025-10-29T02:55:41Z")
Hello OpenAI team, It has been well over a month since I’ve had this issue. I’ve been banned off the discord, no one is responding here, ignored via email, is anyone going to attempt to fix this? ---
**Author:** ![Ken\_Wiltshire](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/ken_wiltshire/32/511321_2.png) [@Ken\_Wiltshire](https://community.openai.com/u/Ken_Wiltshire)\ **Post date:** [November 7, 2025, 9:08pm UTC](https://community.openai.com/t/mcp-oauth-working-perfectly-via-api-or-agent-builder-but-getting-connector-not-safe-via-dev-method-on-frontend/1362705/10 "2025-11-07T21:08:41Z")
suddenly getting ‘connector not safe’ on pizza