Build Smarter: 8 Powerful APIs every Dev must try in 2025 🔥

curl 'https://serpapi.com/search.json?q=coffee&api_key=YOUR_API_KEY'

{
  "search_metadata": {
    "id": "1234567890",
    "status": "Success"
  },
  "organic_results": [
    {
      "position": 1,
      "title": "Best Coffee Beans",
      "link": "https://example.com/best-coffee-beans",
      "snippet": "Discover the best coffee beans for your brew."
    },
    {
      "position": 2,
      "title": "Coffee Brewing Techniques",
      "link": "https://example.com/coffee-brewing",
      "snippet": "Learn how to brew the perfect cup of coffee."
    }
  ],
  "ads": [
    {
      "position": 1,
      "title": "Buy Coffee Online",
      "link": "https://example.com/buy-coffee",
      "snippet": "Get your favorite coffee delivered to your door."
    }
  ]
}

# Upload your audio file to AssemblyAI

curl -X POST "https://api.assemblyai.com/v2/upload" \
  -H "authorization: YOUR_API_KEY" \
  --data-binary @"call.wav"

# Start transcription with sentiment analysis
curl -X POST "https://api.assemblyai.com/v2/transcript" \
  -H "authorization: YOUR_API_KEY" \
  -H "content-type: application/json" \
  -d '{
    "audio_url": "https://cdn.assemblyai.com/upload/",
    "sentiment_analysis": true
  }'

# Poll the status (replace with actual transcript ID)
curl -X GET "https://api.assemblyai.com/v2/transcript/your-transcript-id" \
  -H "authorization: YOUR_API_KEY"

# Final response:
# {
#   "text": "Thank you for calling...",
#   "sentiment_analysis_results": [
#     { "text": "Thank you for choosing Devto", "sentiment": "POSITIVE" },
#     { "text": "I appreciate you read my articles.", "sentiment": "POSITIVE" }
#   ]
# }

# Step 1: Use the Open Food Facts API to fetch product details by barcode

# Example would be, if the scanned barcode is: 737628064502 (Tomato Ketchup)

curl -X GET "https://world.openfoodfacts.org/api/v0/product/737628064502.json"

{
  "status": 1,
  "product": {
    "product_name": "Tomato Ketchup",
    "brands": "Kissan",
    "ingredients_text": "Tomato concentrate, vinegar, sugar, salt, spice...",
    "nutriments": {
      "energy-kcal_100g": 100,
      "sugars_100g": 22.8,
      "salt_100g": 1.8
    }
  }
}

# If you want to get the price of multiple cryptocurrencies
https://api.coingecko.com/api/v3/simple/price ids=bitcoin,ethereum,dogecoin&vs_currencies=usd

// get prices for multiple cryptocurrencies
async function getCryptoPrices() {
  const response = await fetch('https://api.coingecko.com/api/v3/simple/price?ids=bitcoin,ethereum,dogecoin&vs_currencies=usd');
  const data = await response.json();

  // Display the prices
  console.log('Bitcoin Price (USD):', data.bitcoin.usd);
  console.log('Ethereum Price (USD):', data.ethereum.usd);
  console.log('Dogecoin Price (USD):', data.dogecoin.usd);
}

getCryptoPrices();

# Below is a basic sample program on how to setup the replicate API key inside the project




  
  
  Image Generator


  Generated Image
  
  Generating your image...

  
    async function generateImage() {
      const apiKey = 'YOUR_API_KEY';  // Replace with your actual Replicate API key
      const versionId = 'model-version-id';  // Replace with the correct model version ID


      const prompt = 'A place full of happy people';

      try {
        const response = await fetch('https://api.replicate.com/v1/predictions', {
          method: 'POST',
          headers: {
            'Authorization': `Token ${apiKey}`,
            'Content-Type': 'application/json',
          },
          body: JSON.stringify({
            version: versionId,  // Use the model version ID, get it from replicate
            input: { prompt: prompt },  
          }),
        });

        const data = await response.json();


        const imageUrl = data.output[0]; 
        document.getElementById('generated-image').src = imageUrl; 
        document.getElementById('loading-message').style.display = 'none';  
      } catch (error) {
        console.error('Error generating image:', error);
        document.getElementById('loading-message').innerText = 'Error generating image.';
      }
    }

    generateImage();  
  






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Why should you consider using Replicate API?
✅ Cutting-Edge AI Models: Run the latest AI models, including image generation, NLP, speech recognition, and video processing, directly via API.
✅ Pay-As-You-Go: You only pay for what you use, making it cost-effective for both small and large-scale applications.
✅ Simple API Integration: With clear documentation and an easy-to-use REST API, integrating powerful AI into your project takes just a few lines of code.
✅ Custom Model Hosting: Got your own AI model? Upload and deploy it on Replicate without worrying about scaling or performance issues.🚀 Explore more about Replicate API here
  
  
  Fixer API - Get real-time foreign exchange rates
Imagine you’re developing a global e-commerce platform, a travel expense tracker, or a financial dashboard. Your users need up-to-date currency exchange rates to make informed decisions. But fetching accurate forex data manually? That’s impractical.Fixer API simplifies currency conversion by providing real-time and historical exchange rate data for over 170 world currencies. Whether you need to convert prices dynamically, display forex trends, or integrate multi-currency support, Fixer makes it effortless.
Once you sign for a free account


Choose Method: GET

URL: https://api.apilayer.com/fixer/latest?base=USD&symbols=EUR,GBP,JPY



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Sample Response:

{
    "success": true,
    "timestamp": 1617123456,
    "base": "USD",
    "date": "2025-01-05",
    "rates": {
        "EUR": 0.85,
        "GBP": 0.74,
        "JPY": 110.23
    }
}




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You can also use this API in your app or script.


async function getExchangeRates() {
  const apiKey = 'YOUR_API_KEY'; // Replace with your actual Fixer API key
  const url = `https://api.apilayer.com/fixer/latest?base=USD&symbols=EUR,GBP,JPY`;

  const response = await fetch(url, {
    method: 'GET',
    headers: {
      'apikey': apiKey,
    },
  });

  const data = await response.json();
  console.log(data);
}

getExchangeRates();




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Why should you consider using Fixer API?
✅ Live & Historical Rates: Access real-time forex data, plus historical rates dating back years.
✅ 170+ Currencies: Get exchange rates for almost every global currency.
✅ High Accuracy & Reliability: Data sourced from trusted financial providers and updated every 60 seconds.
✅ Simple REST API: Easily integrate with your website or app with minimal effort.🚀 Explore more about Fixer API here
  
  
   Perigon News API –  - Real-time AI-Powered News Aggregation
Imagine building a custom news dashboard, sentiment analysis tool, or AI-driven media monitoring platform. You need access to real-time, structured news data from trusted sources worldwide. Scraping news manually? That’s outdated.Perigon News API delivers real-time, structured news articles enriched with AI-powered categorization, sentiment analysis, and entity recognition. It’s perfect for tracking industry trends, monitoring competitors, or powering content-driven applications.
Sign up for an account on Perigon News API


# Get your API key
# Test the API via GET Method
URL : https://api.perigon.com/v1/news?apiKey=YOUR_API_KEY&category=business




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Sample Response:

{
  "status": "ok",
  "totalResults": 100,
  "articles": [
    {
      "source": { "id": "cnn", "name": "CNN" },
      "author": "John Doe",
      "title": "Tech Innovations in 2025",
      "description": "A look at the upcoming tech trends expected to dominate the market in 2025.",
      "url": "https://cnn.com/article1",
      "content": "The technology industry is set for massive innovations..."
    },
    {
      "source": { "id": "bbc", "name": "BBC" },
      "author": "Jane Smith",
      "title": "AI in Business: What's Next?",
      "description": "Exploring the role of artificial intelligence in modern business.",
      "url": "https://bbc.com/article2",
      "content": "Businesses are increasingly turning to AI to streamline operations..."
    }
  ]
}




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You can fetch the latest news on a given topic and display it in your application

const fetch = require('node-fetch');

async function fetchLatestNews() {
  const apiKey = 'YOUR_API_KEY'; // Replace with your Perigon API key
  const url = `https://api.perigon.com/v1/news?apiKey=${apiKey}&category=technology`;

  const response = await fetch(url, {
    method: 'GET',
    headers: {
      'Authorization': `Bearer ${apiKey}`,
    },
  });

  const data = await response.json();
  console.log(data);

}

fetchLatestNews();




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Why should you consider using Perigon News API?
✅ Real-Time Global News: Access breaking news from thousands of trusted publishers worldwide.
✅ AI-Powered Insights: Get sentiment analysis, topic categorization, and entity extraction for deeper context.
✅ Advanced Filtering: Search by date, category, location, sentiment, and even specific companies or topics.
✅ No Paywalls: Get the full text of news articles, not just snippets.🚀 Explore more about Perigon News API hereOpen-Meteo API – Hyperlocal Weather Data (Fast & Free)
  
  
   Open-Meteo API –  - Hyperlocal Weather Data
Imagine you’re developing a weather forecasting app, an outdoor adventure planner, or a precision agriculture tool. You need highly accurate, real-time weather data—but most APIs are slow, expensive, or locked behind complex authentication processes.This isn’t just another weather API. Open-Meteo API is a blazing-fast, free, and developer-friendly weather API designed for high-performance applications. Whether you’re tracking live conditions, forecasting severe storms, or optimizing farming operations, Open-Meteo delivers precision weather insights at scale—without the hassle of API keys.
You don't need any API key to use this:


Test the URL via GET Method
URL: https://api.open-meteo.com/v1/forecast?latitude=28.6139&longitude=77.2090&hourly=temperature_2m&timezone=Asia/Kolkata




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Sample Response

{
  "latitude": 28.6139,
  "longitude": 77.209,
  "generationtime_ms": 1.8,
  "utc_offset_seconds": 19800,
  "timezone": "Asia/Kolkata",
  "timezone_abbreviation": "IST",
  "elevation": 216,
  "hourly_units": {
    "temperature_2m": "°C"
  },
  "hourly": {
    "time": [
      "2025-05-01T00:00",
      "2025-05-01T01:00",
      "2025-05-01T02:00",
      ...
    ],
    "temperature_2m": [
      26.3,
      25.7,
      25.1,
      ...
    ]
  }
}




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Example UseCase for my City:

async function getWeather() {
  const url = 'https://api.open-meteo.com/v1/forecast?latitude=28.6139&longitude=77.2090&hourly=temperature_2m&timezone=Asia/Kolkata';

  const response = await fetch(url);
  const data = await response.json();

  const times = data.hourly.time;
  const temps = data.hourly.temperature_2m;

  console.log(`Hourly temperatures for Delhi, India:`);
  for (let i = 0; i < 6; i++) {
    console.log(`${times[i]} — ${temps[i]}°C`);
  }
}

getWeather();




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Why should you consider using Open-Meteo API?
✅ Free & Open-Source: No API key required—start using it instantly.
✅ Ultra-Fast Requests: Optimized for low-latency, high-performance applications.
✅ Accurate Forecasts: Get real-time, hourly, and 7-day weather predictions.
✅ Global Coverage: Supports any latitude/longitude worldwide.
✅ Multiple Weather Variables: Fetch temperature, precipitation, wind speed, humidity, and more.
✅ Great for real-time weather dashboards, travel planners, or smart IoT devices.🚀 Explore more about Open-Meteo API here
Conclusion ⭐
Alright, so we’ve covered a bunch of APIs, some powerful, some underrated, and all insanely useful. From turning speech into text with AssemblyAI to tracking crypto prices in real time with CoinGecko, we’ve seen how the right APIs can save time, add value, and unlock new possibilities.Thank you for making it to the end! I hope you will definitely join these communities. If you enjoyed the content, please consider sharing it with someone who might benefit from it.
Feel free to reach out to me on Twitter, LinkedIn, Youtube, Github.
Thankyou Once Again!!