Free Crypto Intelligence API

Storbas — Tue, 14 Jul 2026 15:34:25 +0000

I Built a Free Crypto Intelligence API — Here's What It Does
Prices, DeFi analytics, whale tracking, and sentiment — all in one API call.

Building crypto trading tools requires data from multiple sources. CoinGecko for prices, DeFiLlama for TVL, Etherscan for gas, Alternative.me for sentiment.

That's 4 APIs to manage.

I built ChainSight API to solve this — one unified endpoint for all crypto intelligence data.

What It Does
ChainSight aggregates free crypto data into a single, clean API. No API keys needed for data sources. No rate limit headaches.

Feature What You Get
📊 Market Data Real-time prices for 15,000+ coins
💰 DeFi Analytics Protocol TVL, yields, stablecoins
🐋 Whale Tracking Large ETH transactions in real-time
😱 Fear & Greed Current and historical sentiment
⛽ Gas Estimator Ethereum gas prices (low/average/fast)
Quick Start

Get top 10 cryptocurrencies import requests

url = "https://chainsight-api.p.rapidapi.com/v1/market/top"
headers = {
"X-RapidAPI-Key": "YOUR_API_KEY",
"X-RapidAPI-Host": "chainsight-api.p.rapidapi.com"
}

response = requests.get(url, headers=headers, params={"limit": "10"})
print(response.json())

Get Bitcoin details url = "https://chainsight-api.p.rapidapi.com/v1/market/coin/bitcoin" response = requests.get(url, headers=headers) data = response.json()

print(f"Price: ${data['current_price']}")
print(f"24h change: {data['price_change_percentage_24h']}%")

Check market sentiment url = "https://chainsight-api.p.rapidapi.com/v1/market/fear-greed" response = requests.get(url, headers=headers) data = response.json()

print(f"Fear & Greed: {data['value']} ({data['classification']})")

Find DeFi yields url = "https://chainsight-api.p.rapidapi.com/v1/defi/yields" response = requests.get(url, headers=headers, params={"chain": "Ethereum", "limit": "10"})

for pool in response.json():
print(f"{pool['project']} — {pool['symbol']} — {pool['apy']:.2f}% APY")
All 12 Endpoints
📊 Market Data
Endpoint Description
GET /v1/market/top Top coins by market cap
GET /v1/market/coin/{id} Detailed coin data
GET /v1/market/global Global market overview
GET /v1/market/search Search coins by name
😱 Sentiment
Endpoint Description
GET /v1/market/fear-greed Fear & Greed Index
GET /v1/market/fear-greed/history Historical sentiment
💰 DeFi Analytics
Endpoint Description
GET /v1/defi/protocols DeFi protocols by TVL
GET /v1/defi/protocols/{slug} Protocol detail
GET /v1/defi/yields Yield opportunities
GET /v1/defi/stablecoins Stablecoin data
🐋 Whale Tracking
Endpoint Description
GET /v1/whales/eth Large ETH transactions
GET /v1/whales/gas Gas price estimates
Real Example: Sentiment Dashboard
import requests

url = "https://chainsight-api.p.rapidapi.com/v1/market/fear-greed/history"
headers = {
"X-RapidAPI-Key": "YOUR_API_KEY",
"X-RapidAPI-Host": "chainsight-api.p.rapidapi.com"
}

response = requests.get(url, headers=headers, params={"limit": "30"})
history = response.json()

for day in history:
print(f"Value: {day['value']:3d} | {day['classification']}")
Output:

Source Data
CoinGecko Market prices and coin data
DeFiLlama DeFi protocol TVL, yields, stablecoins
Etherscan Ethereum transactions and gas data
Alternative.me Fear & Greed Index
Pricing
Plan Requests/Month Price
Free 500 $0
Pro 10,000 $9/mo
Ultra 50,000 $29/mo
Mega 200,000 $79/mo
The free tier is enough to test and build prototypes. No credit card required.

Try It Now
Go to ChainSight API on RapidAPI
Subscribe to the free plan
Run your first query
No credit card. No setup fees.

Stop Manually Scraping Google Maps. Use This Free API Instead.

Storbas — Mon, 13 Jul 2026 15:06:35 +0000

How to Generate B2B Leads from Google Maps in 2 Minutes (Free API)

Stop manually copying business data. Automate your lead generation with this free API.

Generating B2B leads is tedious. You search Google Maps, copy the business name, find their website, check if the email exists... repeat 500 times.

What if you could do all of that with a single API call?

That's exactly what the Google Maps Business Scraper API does. Let me show you.

What It Does

Search any business type in any location (dentists in Madrid, restaurants in NYC, lawyers in London)
Get business name, address, website, phone, rating, and coordinates
Enrich with verified emails (SMTP verification) and social profiles (LinkedIn, Instagram, Facebook)
All returned as clean JSON in milliseconds

Quick Start

Step 1: Get Your Free API Key

Go to Google Maps Business Scraper on RapidAPI and sign up. The free tier gives you 100 requests/month with no credit card required.

Step 2: Search for Businesses

Python:

import requests

url = "https://google-maps-business-scraper5.p.rapidapi.com/v1/maps/search"

querystring = {
    "query": "dentistas",
    "location": "Madrid",
    "limit": "10"
}

headers = {
    "X-RapidAPI-Key": "YOUR_API_KEY",
    "X-RapidAPI-Host": "google-maps-business-scraper5.p.rapidapi.com"
}

response = requests.get(url, headers=headers, params=querystring)
data = response.json()

for business in data["results"]:
    print(f"{business['name']} - {business['address']}")

JavaScript:

const options = {
    method: 'GET',
    headers: {
        'X-RapidAPI-Key': 'YOUR_API_KEY',
        'X-RapidAPI-Host': 'google-maps-business-scraper5.p.rapidapi.com'
    }
};

const url = new URL('https://google-maps-business-scraper5.p.rapidapi.com/v1/maps/search');
url.searchParams.append('query', 'dentistas');
url.searchParams.append('location', 'Madrid');
url.searchParams.append('limit', '10');

fetch(url, options)
    .then(res => res.json())
    .then(data => {
        data.results.forEach(biz => {
            console.log(`${biz.name} - ${biz.address}`);
        });
    });

Step 3: Enrich with Emails

Add enrich=true to get verified emails and social profiles:

querystring = {
    "query": "dentistas",
    "location": "Madrid",
    "limit": "10",
    "enrich": "true"
}

The response now includes:

{
    "name": "Clínica Dental Madrid",
    "address": "Calle Gran Vía 42, Madrid",
    "website": "https://clinicadental.com",
    "email": "info@clinicadental.com",
    "email_verified": true,
    "social": {
        "linkedin": "https://linkedin.com/company/clinicadental",
        "instagram": "https://instagram.com/clinicadental"
    }
}

Use Cases

Use Case	How It Helps
Lead Generation	Build prospect lists for cold outreach
Sales Prospecting	Find potential clients by industry and location
Market Research	Analyze business density in different areas
Email Campaigns	Get verified emails for cold email sequences
Freelancing	Find local businesses that need your services

Real Example: Finding Dentists in Madrid

import requests

# Search 50 dentists in Madrid
response = requests.get(
    "https://google-maps-business-scraper5.p.rapidapi.com/v1/maps/search",
    headers={
        "X-RapidAPI-Key": "YOUR_API_KEY",
        "X-RapidAPI-Host": "google-maps-business-scraper5.p.rapidapi.com"
    },
    params={
        "query": "dentistas",
        "location": "Madrid, Spain",
        "limit": "50",
        "enrich": "true"
    }
)

leads = response.json()["results"]
print(f"Found {len(leads)} leads")

for lead in leads:
    email = lead.get("email", "No email")
    print(f"{lead['name']} | {email} | ⭐ {lead.get('rating', 'N/A')}")

Output:

Found 50 leads
Clínica Dental Madrid | info@clinicadental.com | ⭐ 4.7
Dental Studio Madrid | hello@dentalstudio.es | ⭐ 4.5
...

Pricing

Plan	Requests/Month	Price
Free	100	$0
Basic	5,000	$9/mo
Pro	20,000	$29/mo
Business	75,000	$79/mo

The free tier is enough to test and validate your use case.

Try It Now

Go to Google Maps Business Scraper API
Subscribe to the free plan
Run your first search

No credit card. No setup fees. Just search and get data.

DEV Community: Storbas