ERROR_PROVIDER_ERROR (connection to Nebius AI)

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Request ID: af155aec-efc1-4d72-a879-7cb5107acad5
{“error”:“ERROR_PROVIDER_ERROR”,“details”:{“title”:“Provider Error”,“detail”:“We’re having trouble finding the resource you requested. If the problem persists, please contact support.”,“isRetryable”:false,“additionalInfo”:{},“buttons”:,“planChoices”:},“isExpected”:true}
Provider Error We’re having trouble finding the resource you requested. If the problem persists, please contact support.
aXt: Provider Error We’re having trouble finding the resource you requested. If the problem persists, please contact support.
at jpA (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:32115:44798)
at WpA (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:32115:43786)
at ZpA (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:32116:5088)
at Ool.run (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:32116:9098)
at async s$o.runAgentLoop (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:44360:8423)
at async zOl.streamFromAgentBackend (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:44408:8884)
at async zOl.getAgentStreamResponse (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:44408:9837)
at async yLe.submitChatMaybeAbortCurrent (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:32182:15752)
at async Object.Gs [as onSubmit] (vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:43415:4781)
at async vscode-file://vscode-app/c:/Users/groch/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:43389:58030

Steps to Reproduce

I used Nebius AI to connect in Cursor. Error appearing (two models have been checked). Connection to Nebius AI API is working. (checked). Following below instructions:

Screenshots / Screen Recordings

2026-03-02 22_30_42-_new 85 - Notepad++.png
2026-03-02 22_30_42-_new 85 - Notepad++.png1468×256 14.6 KB

Operating System

Windows 10/11

Version Information

Version: 2.5.26 (user setup)
VSCode Version: 1.105.1
Commit: 7d96c2a03bb088ad367615e9da1a3fe20fbbc6a0
Date: 2026-02-26T04:57:56.825Z
Build Type: Stable
Release Track: Early Access
Electron: 39.4.0
Chromium: 142.0.7444.265
Node.js: 22.22.0
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.26200

For AI issues: which model did you use?

deepseek-ai/DeepSeek-V3-0324

For AI issues: add Request ID with privacy disabled

Request ID: af155aec-efc1-4d72-a879-7cb5107acad5

Does this stop you from using Cursor

No - Cursor works, but with this issue

3

Hey, thanks for the report.

Nebius AI isn’t officially supported in Cursor as a BYOK provider. Supported providers are OpenAI, Anthropic, Google, Azure OpenAI, and AWS Bedrock docs: API Keys | Cursor Docs.

The “trouble finding the resource” error is likely happening because when you override the OpenAI base URL, Cursor may still send requests in a format that isn’t fully compatible with the Nebius API. This is a known issue with custom base URL overrides, the request format can differ from what OpenAI-compatible endpoints expect.

For reference, here’s a similar case with Databricks: Cannot Connect to Databrick Hosted Models.

The team is aware of compatibility issues with custom base URLs. There’s no ETA for improvements yet, but your report helps.