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<h1 class="article-title">Context7 MCP for Claude Code: Real-Time Documentation & Library Integration</h1>
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<p class="article-subtitle">Learn how to install and use the Context7 MCP for Claude Code to access real-time library documentation for React, Next.js, Supabase, and 1000+ popular libraries.</p>
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<div class="article-meta-full">
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<span class="read-time">4 min read</span>
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<div class="article-tags">
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<span class="tag">Claude Code</span>
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<span class="tag">MCP</span>
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<span class="tag">Context7</span>
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<span class="tag">Documentation</span>
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<article class="article-body">
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<div class="article-content-full">
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<h2>What is the Context7 MCP?</h2>
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<p>The Context7 MCP (Model Context Protocol) for Claude Code provides real-time access to library documentation, API references, and code examples from 1000+ popular programming libraries and frameworks. Never work with outdated documentation again.</p>
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<!-- Mermaid Diagram -->
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<div class="mermaid-diagram" style="background: #1a1a1a; border: 1px solid #333; border-radius: 8px; padding: 2rem; margin: 2rem 0; text-align: center;">
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<pre class="mermaid">
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graph LR
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A[💻 Claude Code] --> B[🔌 Context7 MCP]
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B --> C[📚 Real-time Library Docs]
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C --> D[✨ Up-to-date Code]
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style B fill:#F97316,stroke:#fff,color:#000
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</pre>
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</div>
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<h2>Key Capabilities</h2>
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<ul>
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<li><strong>Real-Time Documentation Access</strong> - Get current API docs for React, Next.js, Supabase, and 1000+ libraries</li>
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<li><strong>Version-Specific References</strong> - Access documentation for specific library versions</li>
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<li><strong>Code Examples Integration</strong> - Working code snippets and usage patterns</li>
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<li><strong>Migration Guides</strong> - Upgrade paths and breaking changes documentation</li>
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<li><strong>Multi-Library Support</strong> - JavaScript, TypeScript, Python, databases, and UI frameworks</li>
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<li><strong>Automatic Fetching</strong> - Documentation loaded automatically when referenced in prompts</li>
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</ul>
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<h2>Installation</h2>
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<p>Install the Context7 MCP using the Claude Code Templates CLI:</p>
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<pre><code class="language-bash">npx claude-code-templates@latest --mcp devtools/context7</code></pre>
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<p><strong>Where is the MCP installed?</strong></p>
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<p>The MCP configuration is saved in <code>.claude/mcp.json</code> in your project directory:</p>
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<pre><code class="language-bash">your-project/
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├── .claude/
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│ └── mcp.json # ← MCP configuration installed here
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├── src/
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│ └── components/
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├── package.json
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└── README.md</code></pre>
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<h2>How to Use the MCP</h2>
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<p>Start Claude Code and simply reference libraries in your prompts - Context7 will automatically fetch current documentation:</p>
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<pre><code class="language-bash"># Start Claude Code
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claude
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# Then reference any library in your prompt
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> How do I use Server Actions in Next.js 14 App Router?</code></pre>
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<p>Claude Code will automatically fetch the latest Next.js documentation via Context7 and provide accurate, up-to-date answers.</p>
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<h2>Usage Examples</h2>
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<h3>Example 1: React Server Components</h3>
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<pre><code class="language-bash">claude
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> Create a React Server Component that fetches user data using the async/await pattern. Show me the latest best practices for data fetching in Server Components</code></pre>
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<p><strong>Result:</strong> Context7 fetches the current React Server Components API documentation, async component patterns, streaming and Suspense integration, and caching strategies. You get accurate, up-to-date code examples specific to your React version.</p>
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<h3>Example 2: Next.js App Router Implementation</h3>
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<pre><code class="language-bash">claude
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> How do I create a dynamic route with multiple parameters in Next.js App Router? Show me the file structure and implementation</code></pre>
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<p><strong>Result:</strong> Context7 provides the latest Next.js App Router documentation including route structure conventions, dynamic segments syntax, generateStaticParams API, and examples of parallel and intercepting routes.</p>
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<h3>Example 3: Supabase Authentication Setup</h3>
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<pre><code class="language-bash">claude
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> Implement email authentication with Supabase in a Next.js app. Include signup, login, and session management</code></pre>
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<p><strong>Result:</strong> Context7 delivers current Supabase Auth API methods, session management best practices, server-side auth helpers, and email verification flows with working code examples.</p>
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<h2>Official Documentation</h2>
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<p>For more information about MCPs in Claude Code, see the <a href="https://code.claude.com/docs/en/mcps?utm_source=aitmpl&utm_medium=referral&utm_campaign=blog" target="_blank">official documentation</a>.</p>
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<!-- Explore Components Banner -->
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<div class="explore-components-banner">
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<h3>Explore 800+ Claude Code Components</h3>
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<p>Discover agents, commands, MCPs, settings, hooks, skills and templates to supercharge your Claude Code workflow</p>
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<a href="../../index.html">Browse All Components</a>
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|
||
const header = document.createElement('div');
|
||
header.className = 'code-header';
|
||
|
||
const languageSpan = document.createElement('span');
|
||
languageSpan.className = 'code-language';
|
||
languageSpan.textContent = language;
|
||
|
||
const copyButton = document.createElement('button');
|
||
copyButton.className = 'copy-button';
|
||
copyButton.innerHTML = `
|
||
<svg width="14" height="14" viewBox="0 0 24 24" fill="currentColor">
|
||
<path d="M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z"/>
|
||
</svg>
|
||
Copy
|
||
`;
|
||
|
||
header.appendChild(languageSpan);
|
||
header.appendChild(copyButton);
|
||
|
||
// Clone and prepare the pre element
|
||
const newPre = pre.cloneNode(true);
|
||
newPre.classList.add('converted');
|
||
|
||
// Assemble new structure
|
||
codeBlock.appendChild(header);
|
||
codeBlock.appendChild(newPre);
|
||
|
||
// Replace original pre
|
||
pre.parentNode.replaceChild(codeBlock, pre);
|
||
});
|
||
}
|
||
|
||
detectLanguage(codeElement) {
|
||
// Check for class-based language detection
|
||
const className = codeElement.className;
|
||
if (className.includes('language-')) {
|
||
return className.match(/language-(\w+)/)[1];
|
||
}
|
||
|
||
// Check content patterns
|
||
const content = codeElement.textContent;
|
||
|
||
if (content.includes('npm ') || content.includes('$ ') || content.includes('claude-code ')) {
|
||
return 'bash';
|
||
}
|
||
if (content.includes('import ') && content.includes('from ')) {
|
||
return 'javascript';
|
||
}
|
||
if (content.includes('CREATE TABLE') || content.includes('SELECT ')) {
|
||
return 'sql';
|
||
}
|
||
if (content.includes('{') && content.includes('"')) {
|
||
return 'json';
|
||
}
|
||
if (content.includes('def ') || content.includes('import ')) {
|
||
return 'python';
|
||
}
|
||
|
||
return 'text';
|
||
}
|
||
|
||
setupCopyFunctionality() {
|
||
document.addEventListener('click', async (e) => {
|
||
if (!e.target.closest('.copy-button')) return;
|
||
|
||
const button = e.target.closest('.copy-button');
|
||
const codeBlock = button.closest('.code-block');
|
||
const pre = codeBlock.querySelector('pre');
|
||
const code = pre.querySelector('code');
|
||
|
||
if (!code) return;
|
||
|
||
try {
|
||
// Get clean text content
|
||
let textToCopy = code.textContent;
|
||
|
||
// Clean up terminal prompts if it's a terminal block
|
||
if (codeBlock.classList.contains('terminal-block')) {
|
||
textToCopy = this.cleanTerminalOutput(textToCopy);
|
||
}
|
||
|
||
await navigator.clipboard.writeText(textToCopy);
|
||
|
||
// Update button state
|
||
const originalContent = button.innerHTML;
|
||
button.innerHTML = `
|
||
<svg width="14" height="14" viewBox="0 0 24 24" fill="currentColor">
|
||
<path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z"/>
|
||
</svg>
|
||
Copied!
|
||
`;
|
||
button.classList.add('copied');
|
||
|
||
// Reset after 2 seconds
|
||
setTimeout(() => {
|
||
button.innerHTML = originalContent;
|
||
button.classList.remove('copied');
|
||
}, 2000);
|
||
|
||
} catch (err) {
|
||
console.error('Failed to copy code:', err);
|
||
|
||
// Fallback: select text
|
||
const selection = window.getSelection();
|
||
const range = document.createRange();
|
||
range.selectNodeContents(code);
|
||
selection.removeAllRanges();
|
||
selection.addRange(range);
|
||
}
|
||
});
|
||
}
|
||
|
||
cleanTerminalOutput(text) {
|
||
// Remove common terminal prompts and clean output
|
||
return text
|
||
.split('\n')
|
||
.map(line => {
|
||
// Remove prompts like "$ ", "❯ ", "claude-code> "
|
||
line = line.replace(/^[\$❯]\s*/, '').replace(/^claude-code>\s*/, '');
|
||
|
||
// Remove output/result comments (lines starting with # ✓)
|
||
if (line.trim().startsWith('# ✓') ||
|
||
line.trim().startsWith('# Start using') ||
|
||
line.trim().startsWith('# Your .claude') ||
|
||
line.trim().startsWith('# This will') ||
|
||
line.includes('Components will be installed') ||
|
||
line.includes('directory now contains')) {
|
||
return '';
|
||
}
|
||
|
||
return line;
|
||
})
|
||
.filter(line => line.trim() !== '') // Remove empty lines
|
||
.join('\n')
|
||
.trim();
|
||
}
|
||
}
|
||
|
||
// Initialize when DOM is loaded
|
||
if (document.readyState === 'loading') {
|
||
document.addEventListener('DOMContentLoaded', () => new CodeCopy());
|
||
} else {
|
||
new CodeCopy();
|
||
}
|
||
|
||
// Explore components banner hover effect
|
||
document.addEventListener('DOMContentLoaded', () => {
|
||
const banner = document.querySelector('.explore-components-banner a');
|
||
if (banner) {
|
||
banner.addEventListener('mouseenter', () => {
|
||
banner.style.background = '#00cc33';
|
||
banner.style.transform = 'translateY(-2px)';
|
||
});
|
||
banner.addEventListener('mouseleave', () => {
|
||
banner.style.background = '#00ff41';
|
||
banner.style.transform = 'translateY(0)';
|
||
});
|
||
}
|
||
});
|
||
|
||
// Copy Markdown functionality
|
||
class MarkdownCopier {
|
||
constructor() {
|
||
this.setupButton();
|
||
}
|
||
|
||
setupButton() {
|
||
const button = document.getElementById('copy-markdown-btn');
|
||
if (!button) return;
|
||
|
||
button.addEventListener('click', async () => {
|
||
const markdown = this.extractMarkdown();
|
||
|
||
try {
|
||
await navigator.clipboard.writeText(markdown);
|
||
|
||
// Update button state
|
||
const originalContent = button.innerHTML;
|
||
button.innerHTML = `
|
||
<svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor">
|
||
<path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z"/>
|
||
</svg>
|
||
✓
|
||
`;
|
||
button.classList.add('copied');
|
||
|
||
// Reset after 2 seconds
|
||
setTimeout(() => {
|
||
button.innerHTML = originalContent;
|
||
button.classList.remove('copied');
|
||
}, 2000);
|
||
|
||
} catch (err) {
|
||
console.error('Failed to copy markdown:', err);
|
||
}
|
||
});
|
||
}
|
||
|
||
extractMarkdown() {
|
||
const title = document.querySelector('.article-title')?.textContent || '';
|
||
const subtitle = document.querySelector('.article-subtitle')?.textContent || '';
|
||
const date = document.querySelector('time')?.textContent || '';
|
||
const content = document.querySelector('.article-content-full');
|
||
|
||
let markdown = `# ${title}\n\n`;
|
||
|
||
if (subtitle) {
|
||
markdown += `${subtitle}\n\n`;
|
||
}
|
||
|
||
if (date) {
|
||
markdown += `*${date}*\n\n`;
|
||
}
|
||
|
||
if (!content) return markdown;
|
||
|
||
// Process content elements
|
||
const elements = content.children;
|
||
|
||
for (const element of elements) {
|
||
markdown += this.processElement(element) + '\n\n';
|
||
}
|
||
|
||
return markdown.trim();
|
||
}
|
||
|
||
processElement(element) {
|
||
const tagName = element.tagName.toLowerCase();
|
||
|
||
switch (tagName) {
|
||
case 'h2':
|
||
return `## ${element.textContent}`;
|
||
case 'h3':
|
||
return `### ${element.textContent}`;
|
||
case 'h4':
|
||
return `#### ${element.textContent}`;
|
||
case 'p':
|
||
return element.textContent;
|
||
case 'ul':
|
||
return this.processList(element, '-');
|
||
case 'ol':
|
||
return this.processList(element, '1.');
|
||
case 'table':
|
||
return this.processTable(element);
|
||
case 'pre':
|
||
return this.processCodeBlock(element);
|
||
case 'div':
|
||
if (element.classList.contains('code-block')) {
|
||
return this.processCodeBlock(element.querySelector('pre'));
|
||
}
|
||
// Skip newsletter CTAs and other divs
|
||
if (element.classList.contains('newsletter-cta')) {
|
||
return '';
|
||
}
|
||
return element.textContent || '';
|
||
case 'img':
|
||
const alt = element.getAttribute('alt') || '';
|
||
const src = element.getAttribute('src') || '';
|
||
return ``;
|
||
default:
|
||
return element.textContent || '';
|
||
}
|
||
}
|
||
|
||
processList(listElement, marker) {
|
||
const items = listElement.querySelectorAll('li');
|
||
return Array.from(items)
|
||
.map(item => `${marker} ${item.textContent}`)
|
||
.join('\n');
|
||
}
|
||
|
||
processTable(table) {
|
||
const rows = table.querySelectorAll('tr');
|
||
if (rows.length === 0) return '';
|
||
|
||
let markdown = '';
|
||
|
||
// Process header
|
||
const headerRow = rows[0];
|
||
const headers = headerRow.querySelectorAll('th, td');
|
||
const headerText = Array.from(headers).map(h => h.textContent.trim()).join(' | ');
|
||
markdown += `| ${headerText} |\n`;
|
||
|
||
// Add separator
|
||
const separator = Array.from(headers).map(() => '---').join(' | ');
|
||
markdown += `| ${separator} |\n`;
|
||
|
||
// Process body rows
|
||
for (let i = 1; i < rows.length; i++) {
|
||
const row = rows[i];
|
||
const cells = row.querySelectorAll('td, th');
|
||
const cellText = Array.from(cells).map(c => c.textContent.trim()).join(' | ');
|
||
markdown += `| ${cellText} |\n`;
|
||
}
|
||
|
||
return markdown;
|
||
}
|
||
|
||
processCodeBlock(preElement) {
|
||
if (!preElement) return '';
|
||
|
||
const code = preElement.querySelector('code');
|
||
const codeText = code ? code.textContent : preElement.textContent;
|
||
|
||
// Detect language from parent code-block or code element classes
|
||
const codeBlock = preElement.closest('.code-block');
|
||
let language = '';
|
||
|
||
if (codeBlock) {
|
||
const languageSpan = codeBlock.querySelector('.code-language');
|
||
if (languageSpan) {
|
||
language = languageSpan.textContent.toLowerCase();
|
||
}
|
||
} else if (code && code.className.includes('language-')) {
|
||
language = code.className.match(/language-(\w+)/)?.[1] || '';
|
||
}
|
||
|
||
return `\`\`\`${language}\n${codeText}\n\`\`\``;
|
||
}
|
||
}
|
||
|
||
// Initialize markdown copier
|
||
document.addEventListener('DOMContentLoaded', () => {
|
||
new MarkdownCopier();
|
||
});
|
||
</script>
|
||
|
||
<!-- Mermaid Diagram Support -->
|
||
<script type="module">
|
||
import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.esm.min.mjs';
|
||
mermaid.initialize({
|
||
startOnLoad: true,
|
||
theme: 'dark',
|
||
themeVariables: {
|
||
primaryColor: '#F97316',
|
||
primaryTextColor: '#fff',
|
||
primaryBorderColor: '#F97316',
|
||
lineColor: '#00ff41',
|
||
secondaryColor: '#1a1a1a',
|
||
tertiaryColor: '#2d2d2d'
|
||
}
|
||
});
|
||
</script>
|
||
</body>
|
||
</html> |