With regards,
Hemen Parekh
# Claude API Integration Guide for YourContentCreator.in
## Marketing Automation Features for Content Creators
**Prepared for:** Kishan (Developer)
**Project:** www.YourContentCreator.in
**Date:** February 8, 2026
**Purpose:** Enable subscribers to market their created content using Claude AI
---
## Table of Contents
1. [Overview](#overview)
2. [Account Setup](#account-setup)
3. [Authentication](#
4. [Model Selection & Pricing](#model-selection--
5. [Integration Architecture](#integration-
6. [Implementation Examples](#implementation-
7. [Cost Optimization Strategies](#cost-
8. [Security Best Practices](#security-best-
9. [Production Checklist](#production-
---
## Overview
### What You're Building
A marketing automation system that helps YourContentCreator.in subscribers:
- Generate social media posts from their articles/documents
- Create pitch emails to publications and editors
- Suggest target publications based on content analysis
- Draft promotional copy and marketing materials
- Automate content distribution strategies
### Why Claude API?
- **Best-in-class language understanding** for analyzing user content
- **Pay-as-you-go pricing** (no upfront costs)
- **Multiple model tiers** to balance cost vs. capability
- **RESTful API** - easy integration with any tech stack
- **Structured outputs** for consistent formatting
---
## Account Setup
### Step 1: Get API Access
1. Visit: https://console.anthropic.com
2. Sign up for an Anthropic account
3. Navigate to API Keys section
4. Create a new API key (keep it secure!)
5. Add payment method (new users get free credits to test)
### Step 2: Choose Your Development Environment
**Recommended Stack Options:**
**Option A: Node.js/Express Backend**
```bash
npm install @anthropic-ai/sdk
```
**Option B: Python/Flask or Django Backend**
```bash
pip install anthropic
```
**Option C: Direct REST API Calls**
- Use any language with HTTP client
- No SDK required
---
## Authentication
### API Key Management
**CRITICAL:** Never expose your API key in frontend code or version control!
**Correct Approach:**
```javascript
// Backend (Node.js example)
require('dotenv').config();
const apiKey = process.env.ANTHROPIC_API_KEY;
```
**Environment Variable (.env file):**
```
ANTHROPIC_API_KEY=sk-ant-
```
**Add to .gitignore:**
```
.env
.env.local
```
---
## Model Selection & Pricing
### Current Models (February 2026)
| Model | Input Cost | Output Cost | Best For |
|-------|-----------|---------
| **Claude Haiku 4.5** | $1/1M tokens | $5/1M tokens | High-volume, simple tasks |
| **Claude Sonnet 4.5** 
| $3/1M tokens | $15/1M tokens | **RECOMMENDED** - Best balance |
| **Claude Opus 4.5** | $5/1M tokens | $25/1M tokens | Complex analysis, flagship quality |
**Token Estimation:**
- 1 token ≈ 0.75 words (English)
- 100 words ≈ 133 tokens
- 1000 words ≈ 1,333 tokens
### Recommended Model: Claude Sonnet 4.5
**Why?**
- Excellent quality for marketing content
- Cost-effective for production use
- Fast response times
- Handles complex instructions well
**Cost Example:**
```
User uploads 1,500-word article (≈2,000 tokens input)
Claude generates 5 social media posts (≈300 tokens output)
Cost per request:
- Input: 2,000 tokens × $3/1M = $0.006
- Output: 300 tokens × $15/1M = $0.0045
- Total: ~$0.01 per article
For 1,000 articles/month: ~$10
```
---
## Integration Architecture
### Recommended Architecture
```
┌─────────────────┐
│ User Browser │
│ (React/Vue) │
└────────┬────────┘
│
│ HTTPS Request
▼
┌─────────────────┐
│ Your Backend │
│ (Node/Python) │
│ - Rate limiting│
│ - Auth check │
└────────┬────────┘
│
│ API Call (with secret key)
▼
┌─────────────────┐
│ Claude API │
│ api.anthropic │
│ .com │
└─────────────────┘
```
### Key Components
1. **Frontend:** User interface for marketing features
2. **Backend API:** Secure middleware handling Claude API calls
3. **Database:** Store user preferences, generated content history
4. **Queue System (Optional):** For batch processing
---
## Implementation Examples
### Example 1: Generate Social Media Posts
#### Backend Endpoint (Node.js + Express)
```javascript
const express = require('express');
const Anthropic = require('@anthropic-ai/sdk');
const router = express.Router();
const anthropic = new Anthropic({
apiKey: process.env.ANTHROPIC_API_KEY,
});
router.post('/api/marketing/
try {
const { documentContent, documentTitle, targetPlatforms } = req.body;
// Validate user authentication
if (!req.user) {
return res.status(401).json({ error: 'Unauthorized' });
}
// Check user's subscription tier/limits
// ... your business logic here ...
const message = await anthropic.messages.create({
model: "claude-sonnet-4-5-20250929",
max_tokens: 1024,
messages: [{
role: "user",
content: `You are a social media marketing expert. Based on this article titled "${documentTitle}", create 5 engaging social media posts for ${targetPlatforms.join(', ')}.
Article content:
${documentContent}
For each post, provide:
1. The platform it's optimized for
2. The post text (with appropriate length and hashtags)
3. A suggested image description
Format your response as JSON with this structure:
{
"posts": [
{
"platform": "Twitter/X",
"text": "...",
"imageDescription": "..."
}
]
}`
}]
});
// Extract the response
const responseText = message.content[0].text;
// Log for analytics (optional)
console.log('Tokens used:', {
input: message.usage.input_tokens,
output: message.usage.output_tokens,
cost: calculateCost(message.usage)
});
// Return to frontend
res.json({
success: true,
posts: JSON.parse(responseText),
tokensUsed: message.usage
});
} catch (error) {
console.error('Claude API Error:', error);
res.status(500).json({
error: 'Failed to generate social posts',
details: error.message
});
}
});
function calculateCost(usage) {
const inputCost = (usage.input_tokens / 1000000) * 3; // $3 per 1M
const outputCost = (usage.output_tokens / 1000000) * 15; // $15 per 1M
return inputCost + outputCost;
}
module.exports = router;
```
#### Frontend Component (React Example)
```jsx
import React, { useState } from 'react';
import axios from 'axios';
function SocialMediaGenerator({ document }) {
const [posts, setPosts] = useState(null);
const [loading, setLoading] = useState(false);
const [selectedPlatforms, setSelectedPlatforms] = useState([
'Twitter/X', 'LinkedIn', 'Facebook'
]);
const generatePosts = async () => {
setLoading(true);
try {
const response = await axios.post('/api/marketing/
documentContent: document.content,
documentTitle: document.title,
targetPlatforms: selectedPlatforms
}, {
headers: {
'Authorization': `Bearer ${localStorage.getItem('
}
});
setPosts(response.data.
} catch (error) {
console.error('Error:', error);
alert('Failed to generate posts. Please try again.');
} finally {
setLoading(false);
}
};
return (
<div className="social-generator">
<h3>Generate Social Media Posts</h3>
<div className="platform-selector">
{['Twitter/X', 'LinkedIn', 'Facebook', 'Instagram'].map(platform => (
<label key={platform}>
<input
type="checkbox"
checked={selectedPlatforms.
onChange={(e) => {
if (e.target.checked) {
setSelectedPlatforms([...
} else {
setSelectedPlatforms(
}
}}
/>
{platform}
</label>
))}
</div>
<button onClick={generatePosts} disabled={loading}>
{loading ? 'Generating...' : 'Generate Posts'}
</button>
{posts && (
<div className="generated-posts">
{posts.map((post, idx) => (
<div key={idx} className="post-card">
<h4>{post.platform}</h4>
<p>{post.text}</p>
<small>Suggested image: {post.imageDescription}</
<button onClick={() => navigator.clipboard.writeText(
Copy to Clipboard
</button>
</div>
))}
</div>
)}
</div>
);
}
export default SocialMediaGenerator;
```
---
### Example 2: Generate Publication Pitch Email
```javascript
router.post('/api/marketing/
try {
const { documentContent, documentTitle, targetPublication, authorBio } = req.body;
const message = await anthropic.messages.create({
model: "claude-sonnet-4-5-20250929",
max_tokens: 1500,
messages: [{
role: "user",
content: `You are an expert pitch writer. Create a professional pitch email to submit an article to ${targetPublication}.
Article Title: ${documentTitle}
Author Bio: ${authorBio}
Article Summary (first 500 words):
${documentContent.substring(0, 3000)}
Write a compelling pitch email that:
1. Has an attention-grabbing subject line
2. Briefly introduces the author
3. Explains why this article fits the publication
4. Highlights the unique angle or value
5. Ends with a professional call-to-action
Format as JSON:
{
"subject": "...",
"body": "...",
"tips": ["tip1", "tip2"]
}`
}]
});
const pitch = JSON.parse(message.content[0].
res.json({
success: true,
pitch: pitch,
tokensUsed: message.usage
});
} catch (error) {
res.status(500).json({ error: error.message });
}
});
```
---
### Example 3: Suggest Target Publications
```javascript
router.post('/api/marketing/
try {
const { documentContent, documentGenre, targetAudience } = req.body;
const message = await anthropic.messages.create({
model: "claude-sonnet-4-5-20250929",
max_tokens: 2000,
messages: [{
role: "user",
content: `Based on this ${documentGenre} content targeting ${targetAudience} audience, suggest 10 publications, blogs, or platforms where this could be published.
Content excerpt:
${documentContent.substring(0, 2000)}
For each suggestion, provide:
1. Publication name
2. Why it's a good fit
3. Submission guidelines (if known) or website
4. Estimated difficulty (Easy/Medium/Hard)
Format as JSON array of objects.`
}]
});
const suggestions = JSON.parse(message.content[0].
res.json({
success: true,
publications: suggestions,
tokensUsed: message.usage
});
} catch (error) {
res.status(500).json({ error: error.message });
}
});
```
---
### Example 4: Python Implementation (Flask)
```python
from flask import Flask, request, jsonify
from anthropic import Anthropic
import os
import json
app = Flask(__name__)
client = Anthropic(api_key=os.environ.
@app.route('/api/marketing/
def generate_social_posts():
try:
data = request.json
document_content = data.get('documentContent')
document_title = data.get('documentTitle')
platforms = data.get('targetPlatforms', [])
# Call Claude API
message = client.messages.create(
model="claude-sonnet-4-5-
max_tokens=1024,
messages=[{
"role": "user",
"content": f"""Create 5 social media posts for {', '.join(platforms)} based on this article:
Title: {document_title}
Content: {document_content}
Return as JSON with this structure:
{{
"posts": [
{{
"platform": "...",
"text": "...",
"imageDescription": "..."
}}
]
}}"""
}]
)
# Parse response
response_text = message.content[0].text
posts_data = json.loads(response_text)
return jsonify({
'success': True,
'posts': posts_data,
'tokensUsed': {
'input': message.usage.input_tokens,
'output': message.usage.output_tokens
}
})
except Exception as e:
return jsonify({
'error': str(e)
}), 500
if __name__ == '__main__':
app.run(debug=True)
```
---
## Cost Optimization Strategies
### 1. Prompt Caching (IMPORTANT!)
For repeated system prompts, use prompt caching to save 90%:
```javascript
const message = await anthropic.messages.create({
model: "claude-sonnet-4-5-20250929",
max_tokens: 1024,
system: [
{
type: "text",
text: "You are a social media marketing expert specializing in content promotion...",
cache_control: { type: "ephemeral" } // Cache this prompt!
}
],
messages: [{ role: "user", content: userContent }]
});
```
**Savings:** Cached content costs only $0.30 per 1M tokens vs $3.00!
### 2. Batch API (50% Discount)
For non-urgent processing (results in ~24 hours):
```javascript
// Create batch
const batch = await anthropic.messages.batches.
requests: [
{
custom_id: "post-generation-1",
params: {
model: "claude-sonnet-4-5-20250929",
max_tokens: 1024,
messages: [{ role: "user", content: "..." }]
}
}
// ... more requests
]
});
// Check status later
const status = await anthropic.messages.batches.
```
**Use cases:**
- Bulk content analysis
- Overnight report generation
- Non-real-time marketing suggestions
### 3. Smart Content Truncation
Don't send entire documents if not needed:
```javascript
// Only send first 2000 characters for summary tasks
const excerpt = documentContent.substring(0, 2000);
```
### 4. Token Counting Before Sending
```javascript
const tokenCount = await anthropic.messages.
model: "claude-sonnet-4-5-20250929",
messages: [{ role: "user", content: yourContent }]
});
if (tokenCount.input_tokens > 10000) {
// Alert user or truncate content
console.warn('Large request detected:', tokenCount.input_tokens);
}
```
### 5. Rate Limiting & Quotas
Implement user-based limits:
```javascript
// Example middleware
async function checkUserQuota(req, res, next) {
const userId = req.user.id;
const usage = await getUserMonthlyUsage(userId);
const plan = await getUserPlan(userId);
if (usage.requestCount >= plan.maxRequests) {
return res.status(429).json({
error: 'Monthly quota exceeded',
upgradeUrl: '/pricing'
});
}
next();
}
```
---
## Security Best Practices
### 1. API Key Protection
**NEVER DO THIS:**
```javascript
// Frontend code - WRONG!
const apiKey = 'sk-ant-api03-xxxxx';
fetch('https://api.anthropic.
headers: { 'x-api-key': apiKey }
});
```
**ALWAYS DO THIS:**
```javascript
// Backend only
const apiKey = process.env.ANTHROPIC_API_KEY;
```
### 2. Input Validation
```javascript
function validateRequest(data) {
if (!data.documentContent || typeof data.documentContent !== 'string') {
throw new Error('Invalid document content');
}
// Limit content size
if (data.documentContent.length > 50000) {
throw new Error('Document too large (max 50,000 chars)');
}
// Sanitize inputs
data.documentContent = sanitize(data.documentContent)
return data;
}
```
### 3. Rate Limiting (Prevent Abuse)
```javascript
const rateLimit = require('express-rate-limit');
const limiter = rateLimit({
windowMs: 15 * 60 * 1000, // 15 minutes
max: 10, // Limit each user to 10 requests per window
message: 'Too many requests, please try again later.'
});
app.use('/api/marketing', limiter);
```
### 4. Logging & Monitoring
```javascript
// Log all API calls
async function logAPICall(userId, endpoint, tokensUsed, cost) {
await db.apiLogs.create({
userId,
endpoint,
inputTokens: tokensUsed.input_tokens,
outputTokens: tokensUsed.output_tokens,
estimatedCost: cost,
timestamp: new Date()
});
}
```
---
## Production Checklist
### Pre-Launch
- [ ] API key stored in environment variables (not in code)
- [ ] Environment variables configured on production server
- [ ] Rate limiting implemented
- [ ] User quota system in place
- [ ] Error handling for all API calls
- [ ] Logging system operational
- [ ] Cost alerts configured (via Anthropic Console)
- [ ] Input validation on all endpoints
- [ ] User authentication verified before API calls
- [ ] Load tested with expected traffic
### Monitoring & Maintenance
- [ ] Daily cost monitoring dashboard
- [ ] Alert system for unusual spending
- [ ] User feedback collection system
- [ ] Performance metrics tracking
- [ ] Regular prompt optimization reviews
- [ ] Monthly usage reports per user
- [ ] Backup system for generated content
- [ ] Documentation for your team
### User Experience
- [ ] Clear loading states while API processes
- [ ] Informative error messages
- [ ] Copy-to-clipboard functionality
- [ ] Save/download generated content
- [ ] Edit generated content before publishing
- [ ] Usage statistics shown to users
- [ ] Upgrade prompts when quota reached
---
## Example Features for YourContentCreator.in
### Feature Set 1: Social Media Suite
```javascript
// Marketing Dashboard Component
const marketingFeatures = [
{
name: 'Social Media Posts',
endpoint: '/api/marketing/social-posts',
description: 'Generate platform-optimized posts',
icon: 'share'
},
{
name: 'Publication Pitch',
endpoint: '/api/marketing/pitch-email',
description: 'Create pitch emails to editors',
icon: 'mail'
},
{
name: 'Publication Finder',
endpoint: '/api/marketing/suggest-
description: 'Find where to submit your work',
icon: 'search'
},
{
name: 'SEO Optimization',
endpoint: '/api/marketing/seo-optimize',
description: 'Get SEO recommendations',
icon: 'trending-up'
},
{
name: 'Content Calendar',
endpoint: '/api/marketing/content-
description: 'Plan your posting schedule',
icon: 'calendar'
}
];
```
### Feature Set 2: Advanced Marketing Tools
- **Email Newsletter Templates:** Generate email versions of articles
- **Press Release Generator:** Convert content to press releases
- **Influencer Outreach:** Create personalized outreach messages
- **Meta Descriptions:** Auto-generate SEO descriptions
- **Hashtag Suggestions:** Get trending hashtag recommendations
- **Content Repurposing:** Turn articles into threads, carousels, etc.
---
## Quick Start Template
### Minimal Working Example (15 minutes)
```javascript
// server.js
const express = require('express');
const Anthropic = require('@anthropic-ai/sdk');
require('dotenv').config();
const app = express();
app.use(express.json());
const anthropic = new Anthropic({
apiKey: process.env.ANTHROPIC_API_KEY
});
app.post('/api/generate-posts'
try {
const { content, title } = req.body;
const message = await anthropic.messages.create({
model: "claude-sonnet-4-5-20250929",
max_tokens: 1024,
messages: [{
role: "user",
content: `Create 3 social media posts for this article titled "${title}": ${content}`
}]
});
res.json({
posts: message.content[0].text,
cost: ((message.usage.input_tokens / 1000000) * 3 +
(message.usage.
});
} catch (error) {
res.status(500).json({ error: error.message });
}
});
app.listen(3000, () => console.log('Server running on port 3000'));
```
**.env file:**
```
ANTHROPIC_API_KEY=sk-ant-
```
**Test it:**
```bash
curl -X POST http://localhost:3000/api/
-H "Content-Type: application/json" \
-d '{
"title": "The Future of AI",
"content": "Artificial intelligence is transforming..."
}'
```
---
## Additional Resources
### Official Documentation
- API Reference: https://docs.anthropic.com/en/
- Prompt Engineering: https://docs.anthropic.com/en/
- Pricing Calculator: https://console.anthropic.com/
### SDKs & Libraries
- Node.js SDK: https://github.com/anthropics/
- Python SDK: https://github.com/anthropics/
- API Postman Collection: Available in Anthropic Console
### Support
- Developer Discord: Check Anthropic website
- Email Support: support@anthropic.com
- Status Page: https://status.anthropic.com
---
## Common Issues & Solutions
### Issue 1: "Invalid API Key"
**Solution:** Check that key starts with `sk-ant-api03-` and is in environment variables
### Issue 2: High Costs
**Solutions:**
- Implement prompt caching
- Use Batch API for non-urgent tasks
- Truncate long documents
- Monitor token usage
### Issue 3: Slow Response Times
**Solutions:**
- Use streaming for real-time updates
- Switch to faster model (Haiku)
- Implement caching for common requests
### Issue 4: Rate Limiting
**Solutions:**
- Implement exponential backoff
- Use batch processing
- Contact Anthropic for higher limits
---
## Next Steps for Kishan
1. **Day 1-2:** Set up Anthropic account, get API key, test basic calls
2. **Day 3-5:** Implement first feature (social media generator)
3. **Day 6-7:** Add error handling, rate limiting, logging
4. **Week 2:** Build out additional marketing features
5. **Week 3:** Testing, optimization, user feedback
6. **Week 4:** Production deployment, monitoring setup
---
## Cost Estimation for YourContentCreator.in
### Scenario: 1,000 Active Users
**Assumptions:**
- Each user generates content 3 times/month
- Average request: 2,000 input tokens + 500 output tokens
- Using Claude Sonnet 4.5
**Monthly Cost:**
```
Total requests: 1,000 users × 3 requests = 3,000 requests
Per request cost:
- Input: 2,000 tokens × $3/1M = $0.006
- Output: 500 tokens × $15/1M = $0.0075
- Total per request: $0.0135
Monthly total: 3,000 × $0.0135 = $40.50
With 20% buffer: ~$50/month
```
**Revenue Model Suggestion:**
- Free tier: 3 generations/month
- Pro tier ($9.99/month): Unlimited generations
- Profit margin: Excellent at scale!
---
## Summary
You now have everything needed to integrate Claude API into YourContentCreator.in: Authentication setup Model selection guidance Complete code examples Cost optimization strategies Security best practices Production checklist
**Total estimated dev time:** 2-3 weeks for full implementation
**Questions?** Feel free to reach out or check the official docs at https://docs.anthropic.com
Good luck with the integration! 
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