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How to Use Claude 3.5 Sonnet in Cline (VS Code) with Low-Cost Custom API Gateway

ยท 4 min read
AI Supermarket Team
Developer Growth & Engineering

Cline (formerly known as Claude Dev) has quickly become one of the most capable open-source autonomous coding agents inside Visual Studio Code. Unlike standard code completion extensions, Cline can inspect your workspace, create and edit multi-line files, execute terminal commands, and solve complex architectural refactors automatically.

However, powering Cline with Anthropic's flagship Claude 3.5 Sonnet model directly through official retail API billing can quickly become expensive, especially when building large-scale projects that generate thousands of context tokens per prompt.

By configuring Cline to use a high-performance unified gateway like AI Supermarket, developers can slash token expenses by 50% to 70%, bypass strict regional payment restrictions, and maintain blazing fast coding speeds.


๐Ÿš€ Why Connect Cline to AI Supermarket?โ€‹

When running an autonomous agent like Cline, context windows expand rapidly as the agent reads repository trees and unit test logs. Connecting to AI Supermarket provides three immediate benefits:

  1. Substantial Cost Reductions: Access genuine Claude 3.5 Sonnet, GPT-4o, and Gemini models at competitive wholesale rates.
  2. Zero Payment Roadblocks: Top up via flexible payment methods without worrying about international credit card declines.
  3. No Artificial Rate Limits: Enterprise-grade multi-channel load balancing prevents disruptive 429 Too Many Requests interruptions during continuous coding tasks.

๐Ÿ› ๏ธ Step-by-Step Cline Configuration Guideโ€‹

Follow these simple steps to configure Cline with AI Supermarket in VS Code:

Step 1: Install the Cline Extensionโ€‹

  1. Open Visual Studio Code.
  2. Press Ctrl + Shift + X (or Cmd + Shift + X on macOS) to open the Extensions marketplace.
  3. Search for Cline (by Saoud Rizwan / Roo Code) and click Install.

Step 2: Obtain Your AI Supermarket API Keyโ€‹

  1. Visit AI Supermarket (aisupermarket.work) and register your developer account.
  2. Navigate to the API Keys section in your dashboard.
  3. Click Add New Key, assign a name (e.g., Cline-VSCode), and copy the generated token (sk-...).

Step 3: Configure API Provider in Cline Settingsโ€‹

  1. Open the Cline panel in your VS Code sidebar.
  2. Click the Gear (Settings) icon at the top of the Cline window.
  3. In the API Provider dropdown, select OpenAI Compatible.
  4. Fill in the following parameters:
    • Base URL: https://www.cheapertoken.work/v1
    • API Key: sk-your-ai-supermarket-api-key
    • Model ID: claude-3-5-sonnet-20241022 (or gpt-4o, deepseek-chat)

Task TypeRecommended Model IDWhy Choose It
Complex Refactoring & Architectureclaude-3-5-sonnet-20241022SOTA coding benchmark scores, exceptional reasoning.
Fast Prototyping & Scriptinggpt-4oUltra-fast token generation and deep ecosystem support.
Budget-Sensitive Long Contextdeepseek-chat / deepseek-coderMaximum cost-efficiency for bulk analysis.

๐Ÿ’ป Verification & Hello World Testโ€‹

To confirm that your custom gateway is configured properly, you can also run a quick Python verification script outside VS Code:

from openai import OpenAI

# Initialize client pointing to AI Supermarket gateway
client = OpenAI(
api_key="sk-your-ai-supermarket-key",
base_url="https://www.cheapertoken.work/v1"
)

response = client.chat.completions.create(
model="claude-3-5-sonnet-20241022",
messages=[
{"role": "system", "content": "You are an autonomous senior software engineer."},
{"role": "user", "content": "Initialize a TypeScript microservice structure with Dockerfile."}
],
max_tokens=500
)

print(response.choices[0].message.content)

โ“ Frequently Asked Questions (FAQ)โ€‹

Does Cline support streaming completions through custom endpoints?โ€‹

Yes! AI Supermarket's /v1 gateway fully supports real-time SSE (Server-Sent Events) streaming, enabling instant line-by-line code generation in Cline.

What if I get an "Authentication Error" in VS Code?โ€‹

Double check that:

  • Your API key starts with sk- and contains no extra leading/trailing whitespace.
  • The Base URL is exactly https://www.cheapertoken.work/v1 (ensure /v1 is included).
  • Your account at aisupermarket.work has active quota balance.

๐Ÿ Summary & Next Stepsโ€‹

Integrating Cline with AI Supermarket gives you the power of world-class AI coding models without the high price tag or billing hurdles.

๐Ÿ‘‰ Get started today: Register at AI Supermarket to claim your developer test balance and boost your VS Code productivity.

How to Override OpenAI Base URL in Cursor IDE: Ultimate 2026 Developer Guide

ยท 5 min read
AI Supermarket Team
Developer Growth & Engineering

As AI-assisted software development becomes the industry standard, Cursor IDE has emerged as one of the most productive code editors available. However, developers frequently encounter strict rate limits, unexpected 429 Too Many Requests errors, or high monthly costs when relying solely on default API channels for top-tier models like Claude 3.5 Sonnet, GPT-4o, and DeepSeek V3.

Fortunately, Cursor IDE provides native support to Override OpenAI Base URL. By routing your requests through a unified API gateway like AI Supermarket, you can unlock unthrottled concurrency, drastically reduce API expenses, and access all major LLMs under a single API key.

This comprehensive guide walks you through the root causes of Cursor rate limiting, a detailed feature comparison, step-by-step IDE setup, production Python/Node.js code snippets, and solutions to common configuration issues.


๐Ÿ” Why Override OpenAI Base URL in Cursor IDE?โ€‹

1. The Rate Limit Bottleneckโ€‹

Official API providers enforce strict Tier 1 and Tier 2 rate limits based on Requests Per Minute (RPM) and Tokens Per Minute (TPM). During heavy refactoring sessions or multi-file codebase indexing in Cursor, you can easily hit these thresholds, resulting in freezing chat windows and broken code completions.

2. Eliminating Subscription Lock-Inโ€‹

Juggling separate $20/month subscriptions across multiple platforms quickly adds up. A unified gateway allows for a transparent pay-as-you-go model where you pay only for the exact token volume consumed across OpenAI, Anthropic, Google, and DeepSeek.

3. Multi-Model Flexibility in One Placeโ€‹

Instead of constantly re-configuring API keys when switching between models, a unified base URL lets you call claude-3-5-sonnet-20241022, gpt-4o, gemini-2.5-pro, and deepseek-chat seamlessly.


๐Ÿ“Š Feature & Cost Comparison: Direct API vs. AI Supermarketโ€‹

Metric / FeatureDirect Official APIAI Supermarket Gateway
Pricing ModelHigh Pay-As-You-Go / TieredDiscounted Pay-As-You-Go
Subscription Requirement$20/mo per provider$0 Monthly Fee
Concurrency & Rate LimitsStrict RPM/TPM caps (Tier 1/2)High-concurrency enterprise pools
Supported ModelsSingle provider per keyAll top LLMs in 1 key
Free Trial CreditsNone (Credit card required)Instant free test balance upon registration

๐Ÿ› ๏ธ Step-by-Step Guide: Overriding Base URL in Cursor IDEโ€‹

Step 1: Obtain Your Endpoint and API Keyโ€‹

  1. Navigate to AI Supermarket and complete registration (Instant free test balance upon registration).
  2. Go to your Dashboard -> Tokens / API Keys.
  3. Click Create New Token, set an optional name, and copy the generated key string (starts with sk-).
  4. Note your custom base endpoint URL:
    https://aisupermarket.work/v1

Step 2: Configure Cursor IDE Settingsโ€‹

  1. Launch Cursor IDE on your machine.
  2. Open Settings using the keyboard shortcut:
    • Windows / Linux: Ctrl + ,
    • macOS: Cmd + ,
  3. In the left sidebar, click Cursor Settings -> Models.
  4. Locate the OpenAI API Key field and paste your key from AI Supermarket.
  5. Click the Override OpenAI Base URL toggle/input field and type:
    https://aisupermarket.work/v1
  6. Under model selections, enable your desired models:
    • claude-3-5-sonnet-20241022
    • gpt-4o
    • deepseek-chat
    • gemini-2.5-pro

Step 3: Test and Verify the Connectionโ€‹

Open the Cursor AI Chat window (Ctrl + L or Cmd + L) and type:

"Hello! Please confirm which model you are currently running on."

You should receive an instantaneous completion routed directly through AI Supermarket.


๐Ÿ’ป Production-Ready Integration Code Snippetsโ€‹

Beyond Cursor IDE, you can use the exact same endpoint in your custom Python or Node.js applications.

Python SDK Integration Exampleโ€‹

import os
from openai import OpenAI

# Initialize client pointing to AI Supermarket Gateway
client = OpenAI(
base_url="https://aisupermarket.work/v1",
api_key=os.getenv("AI_SUPERMARKET_API_KEY", "sk-your-token-here")
)

def generate_code_refactor(prompt: str):
try:
response = client.chat.completions.create(
model="claude-3-5-sonnet-20241022",
messages=[
{"role": "system", "content": "You are a senior staff software engineer."},
{"role": "user", "content": prompt}
],
temperature=0.2,
max_tokens=2048
)
return response.choices[0].message.content
except Exception as e:
print(f"Error calling LLM gateway: {e}")
return None

if __name__ == "__main__":
result = generate_code_refactor("Optimize a Python quicksort algorithm for memory footprint.")
print(result)

Node.js / TypeScript Integration Exampleโ€‹

import OpenAI from 'openai';

const openai = new OpenAI({
baseURL: 'https://aisupermarket.work/v1',
apiKey: process.env.AI_SUPERMARKET_API_KEY || 'sk-your-token-here',
});

async function main() {
const completion = await openai.chat.completions.create({
messages: [{ role: 'user', content: 'Explain Rust async/await mechanics in 3 bullet points.' }],
model: 'deepseek-chat',
});

console.log(completion.choices[0].message.content);
}

main();

โ“ Frequently Asked Questions (FAQ)โ€‹

Q1: Will overriding the OpenAI Base URL break Cursor's built-in inline editing (Cmd+K)?โ€‹

No. Cursor's inline editor (Cmd+K / Ctrl+K) and Composer (Cmd+I) strictly adhere to standard OpenAI REST protocols. Changing the Base URL simply reroutes HTTP POST requests to AI Supermarket.

Q2: Is my code data secure when using a custom gateway?โ€‹

AI Supermarket operates in strict zero-retention proxy mode. Prompts and completions are passed directly to upstream providers with zero local disk logging or model retraining.

Q3: What happens if I run out of balance?โ€‹

You will receive an insufficient_balance HTTP 402 response. You can top up your account anytime on AI Supermarket via flexible payment options.


๐ŸŽฏ Summary & Next Stepsโ€‹

Overriding the OpenAI Base URL in Cursor IDE is the single most effective way to eliminate rate limits, lower monthly costs, and access Claude 3.5 Sonnet, GPT-4o, and DeepSeek V3 in one place.

๐Ÿ‘‰ Ready to boost your coding velocity? Register at AI Supermarket today and claim your instant test balance!