Need to generate proper meta tags for SEO? This guide covers everything you need to know about creating meta tags via API, including essential tags, character limits, and implementation examples in multiple languages.
What are Meta Tags?
Meta tags are HTML elements that provide metadata about a web page. They appear in the <head> section of HTML and provide information to search engines and browsers about your page's content, character encoding, viewport settings, and more.
Meta tags look like: <meta name="description" content="Your page description">
Essential Meta Tags
The most important meta tags for SEO and functionality:
| Tag | Purpose | Required |
|---|---|---|
title | Page title shown in search results | Yes |
description | Summary shown in search results | Yes |
viewport | Controls page zoom on mobile devices | Yes |
charset | Character encoding (UTF-8) | Yes |
robots | Instructions for search crawlers | Sometimes |
canonical | Preferred URL for duplicate content | Recommended |
Using the Meta Tag API
TinyFn provides an endpoint to generate comprehensive meta tags:
POST https://api.tinyfn.io/v1/generate/metatags
Headers: X-API-Key: your-api-key
Content-Type: application/json
{
"title": "My Amazing Page - Brand Name",
"description": "Discover the best content about amazing topics. Learn more about our services.",
"url": "https://example.com/page",
"robots": "index, follow",
"author": "Brand Name",
"keywords": ["topic1", "topic2", "topic3"]
}{
"html": "<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n<title>My Amazing Page - Brand Name</title>\n<meta name=\"description\" content=\"Discover the best content...\">\n<meta name=\"robots\" content=\"index, follow\">\n<link rel=\"canonical\" href=\"https://example.com/page\">",
"tags": {
"title": "My Amazing Page - Brand Name",
"description": "Discover the best content about amazing topics. Learn more about our services.",
"robots": "index, follow"
},
"character_counts": {
"title": 29,
"description": 80
}
}Parameters
| Parameter | Type | Description |
|---|---|---|
title |
string | Page title (required) |
description |
string | Meta description (required) |
url |
string | Canonical URL |
robots |
string | Robots directive (default: index, follow) |
include_og |
boolean | Include Open Graph tags (default: true) |
Code Examples
JavaScript / Node.js
const response = await fetch('https://api.tinyfn.io/v1/generate/metatags', {
method: 'POST',
headers: {
'X-API-Key': 'your-api-key',
'Content-Type': 'application/json'
},
body: JSON.stringify({
title: 'Product Name - Best Online Store',
description: 'Buy Product Name at the best price. Free shipping available.',
url: 'https://store.com/product/123',
robots: 'index, follow'
})
});
const { html } = await response.json();
// Insert into page headPython
import requests
response = requests.post(
'https://api.tinyfn.io/v1/generate/metatags',
json={
'title': 'Blog Post Title - My Blog',
'description': 'An interesting article about technology and innovation.',
'url': 'https://myblog.com/posts/article',
'author': 'John Doe'
},
headers={'X-API-Key': 'your-api-key'}
)
data = response.json()
print(data['html'])Character Limits
- Title: 50-60 characters (Google displays ~60)
- Description: 150-160 characters (Google may show up to 320)
- Keywords: Not used by Google, but can include 5-10 terms
- URL: Keep under 75 characters for display
Best Practices
- Unique titles and descriptions: Every page should have unique meta tags
- Include keywords naturally: Put important keywords early in title and description
- Write for users: Meta tags should entice clicks, not just rank
- Always set canonical: Prevent duplicate content issues
Use via MCP
Your AI agent can call this tool directly via Model Context Protocol — no HTTP code needed. Add TinyFn to Claude Desktop, Cursor, or any MCP client:
{
"mcpServers": {
"tinyfn-generate": {
"url": "https://api.tinyfn.io/mcp/generate/",
"headers": {
"X-API-Key": "your-api-key"
}
}
}
}See all generator tools available via MCP in our Generator MCP Tools for AI Agents guide.
Try the Meta Tag Generator API
Get your free API key and start creating SEO-optimized meta tags.
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