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Cursor Integration

Cursor is an AI-powered code editor. You can route Cursor’s AI requests through the LeanMCP AI Gateway to gain visibility into what code is being sent to AI providers.

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Prerequisites

1

Get Credits

Purchase credits at ship.leanmcp.com
2

Create API Key

Create an API key at ship.leanmcp.com/api-keys with SDK permissions

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Configuration

1

Open Cursor Settings

Press Cmd + , (Mac) or Ctrl + , (Windows/Linux) to open SettingsOr go to Cursor > Settings > Cursor Settings
2

Navigate to Models

Click on Models in the left sidebar
3

Configure OpenAI-Compatible Endpoint

Find the OpenAI API Key section and configure:API Key:
leanmcp_your_api_key_here
Override OpenAI Base URL:
https://aigateway.leanmcp.com/v1/openai
Cursor settings
4

Save and Restart

Save your settings and restart Cursor for changes to take effect.

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Verifying the Setup

  1. Open any file in Cursor
  2. Use Cmd+K (or Ctrl+K) to open the AI prompt
  3. Ask a simple question like “What does this file do?”
  4. Check your LeanMCP Dashboard to see the request logged
Verify Cursor setup

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What You Can See

Once configured, you’ll be able to see in your LeanMCP dashboard:
  • Full context sent - exactly what code Cursor includes in each request
  • Token usage - how many tokens each request uses
  • Model used - which AI model processed your request
  • Sensitive data - any API keys, passwords, or PII detected in your code

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Supported Models

Through the LeanMCP AI Gateway, Cursor can access:
ProviderModels
OpenAIGPT-5.2, GPT-5.2, GPT-5.2
AnthropicClaude 3.5 Sonnet, Claude 3 Opus
Cursor primarily uses the OpenAI endpoint. For Anthropic models, you may need to configure a separate API endpoint.

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Troubleshooting

  • Verify your API key is correct
  • Check the base URL is exactly https://aigateway.leanmcp.com/v1/openai
  • Restart Cursor after changing settings
  • Ensure your API key has SDK permissions
  • Check that you have credits in your account
  • Verify the API key hasn’t been deleted
  • The gateway adds minimal latency (~50ms)
  • If significantly slower, check your internet connection
  • Try a different model (GPT-5.2 is faster than GPT-5.2)

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Next Steps

View Your Logs

See all your AI requests

Security Settings

Block sensitive data