Cursor

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Overview

Cursor is an AI-first code editor built on VS Code that provides intelligent code completions, chat, and editing capabilities. By connecting Cursor to ModelStack, you can access 40+ models including Claude, GPT, and Gemini through a single API key.

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Prerequisites

• Cursor installed (download from cursor.com)
• ModelStack API key from your dashboard

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Configuration

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Step 1: Open Cursor Settings

1. Open Cursor
2. Press Cmd+, (Mac) or Ctrl+, (Windows/Linux) to open Settings
3. Search for “Models” in the settings search bar

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Step 2: Configure ModelStack

1. Navigate to Models → API Keys
2. Click Override OpenAI Base URL
3. Enter: https://api.modelstack.cc/v1
4. Add your ModelStack API key in the API Key field

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Step 3: Select Your Model

In the model dropdown, you can now use any ModelStack-supported model:

• claude-sonnet-4-6
• claude-opus-4-6
• gpt-4o
• gemini-2.5-pro
• View all models

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Usage

Once configured, Cursor will route all AI requests through ModelStack:

• Chat: Use Cmd+L to open AI chat
• Inline Edit: Select code and press Cmd+K for AI edits
• Autocomplete: AI suggestions appear as you type

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Troubleshooting

Issue: “Invalid API key” error Solution: Verify your API key starts with sk_ and has active credits in your billing dashboard. Issue: Model not found Solution: Check the supported models list for correct model names. ModelStack uses standardized names like claude-sonnet-4-6 instead of provider-specific IDs.

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Next Steps

• Track usage in your ModelStack dashboard
• Create model stacks for automatic fallback routing
• View pricing for all supported models

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Last verified: 2026-03-07