Using APIMart in Cursor

Detailed guide on how to configure and use APIMart API service in Cursor AI code editor. This guide will help you configure APIMart API in Cursor to access rich AI model resources for code development.

Prerequisites

Before you begin, please ensure:

1. Cursor is installed
   Download and install the version suitable for your OS from the Cursor website

2. You have an APIMart API key
   Log in to the APIMart Console to get your API key (starts with sk-)

Tip: If you don’t have an APIMart account yet, register at APIMart and obtain an API key first.

Step 1: Open Cursor Settings

After launching Cursor, open Settings:

1. Click the ⚙️ Settings icon (gear) in the top-right corner
2. Or use shortcuts:
   • Windows/Linux: Ctrl+Shift+J
   • macOS: Cmd+Shift+J

Step 2: Configure model settings

2.1 Open model settings

In Settings:

1. Find Models in the left sidebar
2. Open the model settings page

2.2 Use OpenAI API Key

On the model settings page:

1. Find the OpenAI API Key section
2. Click Add new or Override OpenAI Base URL

Important: Cursor supports OpenAI-compatible APIs, so APIMart can be configured as a custom provider.

2.3 Configure APIMart

Enter the following:

Setting	Value
API Key	Your APIMart API key (sk-xxxxxxxxxxxx)
Base URL	https://api.apimart.ai/v1

Important: - Base URL must include the /v1 suffix: https://api.apimart.ai/v1 - The API key must be the sk-... key from the APIMart console - After saving, Cursor uses APIMart models for completion and chat

Step 3: Choose models

3.1 Model selection

In model settings you can choose which models to use.

Available families:

• GPT-4/5 — strong for complex code generation and Q&A

  • gpt-5 — latest GPT-5
  • gpt-4o — GPT-4o
  • gpt-4o-mini — faster, lower cost

• Claude — strong for understanding and refactoring

  • claude-sonnet-4-5-20250929 — Claude Sonnet 4.5
  • claude-haiku-4-5-20251001 — Claude Haiku 4.5

• Other

  • gemini-2.0-flash-exp — Google Gemini 2.0 Flash

Suggestions: - 💰 Completion (cost-efficient): gpt-4o-mini - 🚀 Hard tasks (performance): gpt-5, gpt-4o, claude-sonnet-4-5-20250929 - ⚡ Low latency: gpt-4o-mini, gemini-2.0-flash-exp

3.2 Per-feature models

You can pick different models per feature:

• Chat — conversations with the AI
• Autocomplete — inline suggestions
• Cmd+K — quick edit / generate

Choose the best fit for each workflow.

Step 4: Start using

Once configured, you can use Cursor’s AI features.

4.1 AI Chat (Cmd+L / Ctrl+L)

1. Press Cmd+L (macOS) or Ctrl+L (Windows/Linux)
2. Ask a question or give a task, for example:
   • “How do I implement quicksort?”
   • “Help me optimize this code’s performance”
   • “Explain how this function works”

4.2 Code completion

1. Type as usual in the editor
2. Cursor suggests completions
3. Press Tab to accept

4.3 Quick edit (Cmd+K / Ctrl+K)

1. Select code
2. Press Cmd+K (macOS) or Ctrl+K (Windows/Linux)
3. Describe the edit, e.g.:
   • “Add error handling”
   • “Refactor this function”
   • “Add type annotations”

4.4 Explain code

1. Select the code
2. Right-click Explain with AI (or shortcut)
3. The AI explains behavior and logic

FAQ

Q1: Can’t reach APIMart?

Try:

1. Base URL — must be exactly https://api.apimart.ai/v1
2. API key — valid sk-... key from the console
3. Network — ensure https://api.apimart.ai is reachable; a proxy may be required in some regions

Q2: Slow responses?

Try:

1. Use a lighter model (gpt-4o-mini instead of gpt-4o, or gemini-2.0-flash-exp)
2. Shorten context — send less code, ask more precise questions
3. Check latency / proxy if needed

Q3: API errors?

Message	Likely cause	What to do
401 Unauthorized	Bad or expired key	Re-create key and update Cursor
429 Too Many Requests	Rate limited	Wait and retry
500 Internal Server Error	Temporary server issue	Retry later
insufficient_quota	Low balance	Top up in console

Q4: Usage and billing?

Open the APIMart Console:

• 📊 Call statistics
• 💰 Cost breakdown
• 📈 Usage trends
• 🔍 Request logs

Tips

1. Use context

• Open related files
• Reference files with @filename
• Reference folders with @folder

2. Clear prompts

❌ Weak:

optimize this

✅ Strong:

Optimize this function for performance:
1. Reduce nested loops
2. Prefer more efficient data structures
3. Add caching where helpful

3. Iterate

Start small → refine → test → adjust prompts.

4. Project rules

Define style, naming, architecture, and tests in .cursorrules.

Features

With Cursor + APIMart:

• 💬 Chat for coding questions
• ⚡ Smart completion
• ✏️ Natural-language edits
• 🔍 Deeper code understanding
• 🐛 Debugging help
• 📝 Docs and comments
• 🔄 Refactoring
• 🧪 Test scaffolding

Support

• 📚 APIMart Documentation
• 💬 Discord
• 🐦 Twitter @APIMart_
• 📧 [e-mail]

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Get started with APIMart

Sign up, get your API key, and ship faster with Cursor!