Agent mode in BYOK

Support Help
1

Does agent mode work with BYOK like an openrouter api key or GLM ?

Cursor Agent Mode cannot modify files when using Azure-deployed GPT-5 mini (communication works but no file editing)
2

Hey, thanks for the question.

BYOK in Cursor has some limitations. Custom API keys only work with standard chat models. Agent mode requires specialized models and features that are fully supported only for official providers.

Supported BYOK providers:

  • OpenAI (standard models, not reasoning)
  • Anthropic (all Claude models)
  • Google (Gemini via the Google AI API)
  • Azure OpenAI
  • AWS Bedrock

More details: API Keys | Cursor Docs

OpenRouter and other custom providers (including GLM via OpenRouter) aren’t officially supported. When using Agent mode with BYOK OpenAI, even for standard models, there are known issues with the tools format: Missing required parameter: 'tools[0].name - #4 by deanrie

If you need Agent mode, I recommend using Cursor’s built-in models or connecting an API key directly from a supported provider.