Tutorials
Free, Unlimited Codestral API
Codestral is a specialized language model optimized for code-related tasks, including code generation, debugging, and explanation. In this tutorial, we'll show you how to use Codestral through Puter.js to enhance your development workflow.
Puter is the pioneer of the "User Pays" model, which allows developers to incorporate AI capabilities into their applications while each user will cover their own usage costs. This model enables developers to access advanced AI capabilities for free, without any API keys or server-side setup.
Prerequisites
Just include the Puter.js library in your HTML file:
<script src="https://js.puter.com/v2/"></script>
Using Codestral for Code Generation
To use Codestral, you'll use the puter.ai.chat() function with the model parameter set to 'codestral-latest'. Here's a basic example:
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
// Generate a simple React component
puter.ai.chat(
"Write a React component for a todo list item with a checkbox and delete button.",
{model: 'codestral-latest'}
).then(response => {
document.body.innerHTML = `<pre>${response.text}</pre>`;
});
</script>
</body>
</html>
Code Explanation and Review
Codestral is excellent at explaining code and providing code reviews. Here's how to use it:
<html>
<body>
<div id="explanation"></div>
<script src="https://js.puter.com/v2/"></script>
<script>
const code = `
class BinarySearchTree {
constructor() {
this.root = null;
}
insert(value) {
const newNode = { value, left: null, right: null };
if (!this.root) {
this.root = newNode;
return;
}
let current = this.root;
while (true) {
if (value < current.value) {
if (!current.left) {
current.left = newNode;
break;
}
current = current.left;
} else {
if (!current.right) {
current.right = newNode;
break;
}
current = current.right;
}
}
}
}`;
// Ask Codestral to explain the code
puter.ai.chat(
`Explain this binary search tree implementation: \n\n${code}`,
{model: 'codestral-latest'}
).then(response => {
document.getElementById('explanation').innerHTML = response.text;
});
</script>
</body>
</html>
Building a Code Review Tool
Here's how to create a simple code review tool using Codestral:
<html>
<body>
<div style="max-width: 800px; margin: 20px auto;">
<h2>Code Review Tool</h2>
<textarea id="code-input" style="width: 100%; height: 200px; margin-bottom: 10px;"
placeholder="Paste your code here..."></textarea>
<button onclick="reviewCode()">Review Code</button>
<div id="review-result" style="margin-top: 20px; white-space: pre-wrap;"></div>
</div>
<script src="https://js.puter.com/v2/"></script>
<script>
async function reviewCode() {
const code = document.getElementById('code-input').value;
if (!code) return;
const resultDiv = document.getElementById('review-result');
resultDiv.innerHTML = 'Analyzing code...';
const prompt = `
Please review this code and provide:
1. A brief explanation of what the code does
2. Potential issues or bugs
3. Suggestions for improvement
4. Best practices that could be applied
Here's the code:
${code}`;
const response = await puter.ai.chat(prompt, {
model: 'codestral-latest',
stream: true
});
resultDiv.innerHTML = '';
for await (const part of response) {
resultDiv.innerHTML += part.text;
}
}
</script>
</body>
</html>
Advanced Features: Code Debugging Assistant
Here's how to create a debugging assistant that can help identify and fix issues in code:
<html>
<body>
<div style="max-width: 800px; margin: 20px auto;">
<h2>Code Debugging Assistant</h2>
<div style="display: flex; gap: 20px;">
<div style="flex: 1;">
<h3>Code</h3>
<textarea id="code-input" style="width: 100%; height: 200px;"
placeholder="Paste your code here..."></textarea>
</div>
<div style="flex: 1;">
<h3>Error Message</h3>
<textarea id="error-input" style="width: 100%; height: 200px;"
placeholder="Paste any error messages here..."></textarea>
</div>
</div>
<button onclick="debugCode()" style="margin-top: 10px;">Debug</button>
<div id="debug-result" style="margin-top: 20px; white-space: pre-wrap;"></div>
</div>
<script src="https://js.puter.com/v2/"></script>
<script>
async function debugCode() {
const code = document.getElementById('code-input').value;
const error = document.getElementById('error-input').value;
if (!code) return;
const resultDiv = document.getElementById('debug-result');
resultDiv.innerHTML = 'Analyzing...';
const prompt = `
Please help debug this code. ${error ? 'Here is the error message:' : ''}
${error ? error + '\n\n' : ''}
Here's the code:
${code}
Please provide:
1. Identification of the issue(s)
2. Explanation of what's causing the problem
3. Suggested fix with corrected code
4. Tips to prevent similar issues in the future`;
const response = await puter.ai.chat(prompt, {
model: 'codestral-latest',
stream: true
});
resultDiv.innerHTML = '';
for await (const part of response) {
resultDiv.innerHTML += part.text;
}
}
</script>
</body>
</html>
Using Codestral for Test Generation
Codestral can also help generate test cases for your code:
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
const code = `
function calculateDiscount(price, quantity) {
if (quantity >= 10) return price * 0.9; // 10% discount
if (quantity >= 5) return price * 0.95; // 5% discount
return price;
}`;
// Ask Codestral to generate tests
puter.ai.chat(
`Generate Jest test cases for this function: \n\n${code}`,
{model: 'codestral-latest'}
).then(response => {
document.body.innerHTML = `<pre>${response.text}</pre>`;
});
</script>
</body>
</html>
Codestral through Puter.js provides a powerful AI assistant for various coding tasks. Whether you need help with code generation, debugging, testing, or code reviews, Codestral can significantly improve your development workflow.
Remember that each user of your application will use their own Puter account, so you don't have to worry about costs or rate limits - it's all handled automatically!
Related Resources
- Getting Started with Puter.js
- Free, Unlimited OpenAI API
- Free, Unlimited Claude API
- Free, Unlimited Mistral Large API
- Free, Unlimited OCR API
- Free, Unlimited Cloud Save API for Games
- Add a Cloud Key-Value Store to Your App
External Links
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