Budibase 3.30.3 calls OpenAI /chat/completions without /v1 (404 Not Found) when using AI JavaScript validation

[Mikhail-I]

Environment

Budibase: 3.30.3
Deployment: Self-hosted Docker (multi-container)
AI Provider: OpenAI
Feature: Budibase AI → JavaScript validation / generation

Steps to reproduce

Deploy Budibase 3.30.3 via docker-compose
Configure OpenAI in Settings → AI with a valid API key
Create or edit a JavaScript validation using Budibase AI
Click “Validate” or “Generate”

OpenAI Base URL shown in Budibase UI is https://api.openai.com and is read only
Setting OPENAI_BASE_URL=https://api.openai.com/v1 in app-service and worker-service did not change behaviour
Appears Budibase constructs the OpenAI endpoint without /v1
Which returns 404 Not Found

Expected behaviour
Budibase should call: https://api.openai.com/v1/chat/completions

Evidence

Error from logs:
{
"level": "WARN",
"service": "@budibase/server",
"err": {
"type": "APICallError",
"name": "AI_APICallError",
"message": "Not Found",
"url": "https://api.openai.com/chat/completions",
"statusCode": 404,
"stack": "AI_APICallError: Not Found
at /app/node_modules/@ai-sdk/openai/node_modules/@ai-sdk/provider-utils/src/response-handler.ts:35:16
at async postToApi (/app/node_modules/@ai-sdk/openai/node_modules/@ai-sdk/provider-utils/src/post-to-api.ts:118:28)
at async OpenAIChatLanguageModel.doGenerate (/app/node_modules/@ai-sdk/openai/src/chat/openai-chat-language-model.ts:325:9)
at async generateText (/app/node_modules/ai/src/generate-text/generate-text.ts:349:12)
at async generateJs (/app/src/api/controllers/ai/js.ts:30:18)
",
"requestBodyValues": {
"model": "gpt-5-mini",
"messages": "[developer system prompt + user validation expression]"
}
}
}