CORS issue when using Custom (OpenAI Compatible)

[withsmilo]

Hi, I'm trying to register our customized OpenAI endpoint with Smart Composer. However, I met a CORS issue in my case.

https://<OUR_CUSTOM_ENDPOINT_URL>/chat/completions' from origin 'app://obsidian.md' has been blocked by CORS policy: Request header field x-stainless-os is not allowed by Access-Control-Allow-Headers in preflight response.

How can I address this issue? As far as I know, Copilot for Obsidian provides a way to enable CORS in their UI. (https://www.obsidiancopilot.com/en/docs/settings#adding-custom-models)
Thanks.

[glowingjade]

Are you using Ollama to run the model, or are you employing another method? If you're using Ollama, you can select "Ollama" as the model, and it will handle the CORS issue automatically.

However, if that's not the case, perhaps it's time for us to consider adding a CORS handling option for custom models as well.

[withsmilo]

@glowingjade , thanks for quick reply.
Sadly, I'm not using Ollama, but using a custom OpenAI compatible model in my case. I would be more than grateful if you could consider my case. Thanks.

[glowingjade]

@withsmilo We'll add a CORS handling option to address this issue. Thank you for bringing this to our attention.

[kevin-on]

@withsmilo Could you share the model you're using? It will help with implementing the feature.

[rewse]

I have the same issue with https://github.com/aws-samples/bedrock-access-gateway

Access to fetch at '<OPENAI_BASE_URL>/api/v1/chat/completions' from origin 'app://obsidian.md' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

I’ve confirmed it works with curl.

[kevin-on]

@rewse Thanks for reporting. I will also test for amazon bedrook.

[ericmjl]

Confirming that I have the same issue on my side. CORS with OpenAI-compatible API endpoint. We In my case, I'm seeing the following, with API endpoints obscured:

Access to fetch at 'https://<BASE_URL>/openai/v1/chat/completions' from origin 'app://obsidian.md' has been blocked by CORS policy: Request header field x-stainless-os is not allowed by Access-Control-Allow-Headers in preflight response.