published

Covalent API

The Covalent API offers seamless access to aggregated blockchain data from various networks, enabling developers to build multi-chain applications efficiently.

Developed by Covalent

Live API
99.90%Uptime
150msLatency
800Stars
API KeyAuth
NoCredit Card
RESTStyle
v1Version
API Endpoints

Reference for available routes, request structures, and live examples.

Retrieve token balances for an Ethereum address

Full Endpoint URL
https://api.covalenthq.com/v1/1/address/0x.../balances_v2/
Implementation Example
curl -X GET 'https://api.covalenthq.com/v1/1/address/0x.../balances_v2/' \
  -H 'Authorization: Bearer YOUR_API_KEY'
Request Payload
{
  "nft": false
}
Expected Response
{
  "data": {
    "items": [
      {
        "balance": "1000000000000000000",
        "contract_name": "Ethereum"
      }
    ],
    "address": "0x..."
  }
}
Version:v1
Limit:5,000 requests/month (free tier)
Real-World Applications
  • Building multi-chain wallet applicationsOptimized Capability
  • Creating DeFi dashboard solutions aggregating various protocolsOptimized Capability
  • Developing NFT marketplaces with real-time metadata accessOptimized Capability
  • Implementing blockchain analytics platforms for trend insightsOptimized Capability
  • Tracking token balances and transaction histories across multiple blockchainsOptimized Capability
Advantages
  • ✓ Access to data from over 100 blockchain networks
  • ✓ Normalized and comprehensive data structures for ease of use
  • ✓ Supports tokens, NFTs, DeFi positions, and wallet analytics
  • ✓ Detailed documentation with example requests and SDKs
  • ✓ High uptime with scalable infrastructure
Limitations
  • ✗ Rate limit details not fully transparent for free tier
  • ✗ Free tier usage may be limited for high volume applications
  • ✗ API key required for access, adding onboarding step
  • ✗ Some advanced blockchain data may require deep integration or custom queries

FAQs

API Specifications

v1
Pricing Model
Freemium with tiered subscription plans based on usage
Credit Card
Not Required
Response Formats
JSON
Supported Languages
6 Languages
SDK Support
JavaScript, Python, Java, Go
Time to Hello World

Under 30 minutes to obtain API key and test endpoints

Rate Limit

Up to 500 requests per minute for paid plans

Free Tier Usage

Free tier includes up to 100,000 API requests per month with a rate limit of 5 requests per second.

Use Case: Best For

Developers building multi-chain blockchain applications and analytics tools

Not Recommended For

Use cases requiring ultra-low latency or extremely high-frequency trading data

Resources

Documentation Official Website Pricing Details Postman Collection
#cryptocurrency#multi-blockchain#wallet-tracking#covalent

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