Summary

While setting up the openclaw, the custom provider is not accepting cognitive services url which is used for GPT-5-Nano.

Steps to reproduce

1. copy the linux install command and run it.
2. While choosing the provider, choose custom provider.
3. Paste the API base URL (Paste the cognitive services URL)
4. Paste the API key
5. Choose OpenAI-compatible option in Endpoint Compatibility
6. Results in 400 error.

Expected behavior

Expected behaviour is that it should accept the cognitive services url

Actual behavior

The actual behavior is that it is not accepting the url and resulting in 400 error.

OpenClaw version

openclaw 2026.02.26

Operating system

Linux docker container (ubuntu:24.04)

Install method

No response

Logs, screenshots, and evidence

Impact and severity

No response

Additional information

No response