Fix Swagger UI path execute error with server_root_path in OpenAPI schema

[xfan001]

Adds 'servers' field to OpenAPI schema when server_root_path is set, ensuring correct Swagger UI execute path for reverse proxies and subpath deployments. Includes tests to verify correct server URL handling for various root path formats.

Relevant issues

fix #16438

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Type

🆕 New Feature
🐛 Bug Fix
🧹 Refactoring
📖 Documentation
🚄 Infrastructure
✅ Test

Changes

• litellm/proxy/proxy_server.py add

    if server_root_path:
        openapi_schema["servers"] = [{"url": "/" + server_root_path.strip("/")}]

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Project	Deployment	Review	Updated (UTC)
litellm	Ready	Preview, Comment	Jan 13, 2026 2:45am

[xfan001]

fix #16438

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