Agent Router Api Issue

[tabicoder]

1. Go to Dyad's settings (Gear icon > AI Providers).
2. Click "Add Custom Provider."
3. Fill in the provider details (e.g., ID: agentrouter, Display Name: AgentRouter).
4. Go to the new AgentRouter provider settings.
5. Set the Base URL to: https://agentrouter.org/v1
6. Paste a valid API key from agentrouter.org into the API Key field.
7. Add a custom model to this provider (e.g., Model ID: gpt-5, Name: GPT-5).
8. Try to use this new model in a chat.

Expected Behavior
{The API call succeeds, and the model returns a response.}

Actual Behavior
The API call fails. The network request shows a 401 Unauthorized error, and the response body is:

{"message":"UNAUTHENTICATED","success":false}

HOW TO SOLVE THIS ANYONE PLEASE HELP

[github-actions[bot]]

This issue might be a duplicate of existing issues. Please check:

• [bug] Cannot use fully configured Custom Provider in UI #1508: Custom provider appears configured correctly but cannot be used in chat UI - provider doesn't show in models dropdown (confidence: medium)
• [help needed] Dyad and Straico as custom provider #1528: Custom provider (Straico) configured correctly, credits consumed on provider side, but chat becomes unresponsive/non-functional (confidence: medium)

Feel free to ignore if none of these address your specific case.

[wwwillchen]

i think this is an agent router specific issue (and not with dyad) so i'll convert this into a discussion.