1inch API Guide: Accessing DeFi Services with PublicAPI

The 1inch API empowers developers to integrate decentralized finance (DeFi) and cryptocurrency trading functionalities into their applications. This comprehensive guide explores its core features, including real-time token pricing, cross-chain swaps, and trade execution across decentralized exchanges (DEXs).

Core Features of 1inch API

1. Real-Time Token Price Data

Retrieve up-to-the-minute cryptocurrency valuations through standardized endpoints.

Endpoint: GET /api/token_prices

Parameters:

Parameter	Description	Example Value
`base_token`	Base token symbol (e.g., ETH)	ETH
`quote_token`	Quote token symbol (e.g., USDC)	USDC

Implementation Example:

fetch('https://api.1inch.io/api/token_prices?base_token=ETH&quote_token=USDC')
  .then(response => response.json())
  .then(data => console.log(data));

2. Token Swapping Functionality

Facilitate seamless conversions between digital assets with optimal routing.

Endpoint: POST /api/swap

Key Parameters:

from_token: Origin token symbol
to_token: Destination token symbol
amount: Transaction quantity

Code Sample:

fetch('https://api.1inch.io/api/swap', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    from_token: 'ETH',
    to_token: 'WBTC',
    amount: '1'
  })
}).then(response => response.json())
  .then(data => console.log(data));

3. Trade Execution

Perform direct transactions with customizable slippage parameters.

Endpoint: POST /api/trade

Essential Parameters:

Parameter	Description	Example Value
`slippage`	Maximum acceptable price variance (%)	1

👉 Discover advanced trading strategies for maximizing your DeFi returns.

Best Practices for API Implementation

Rate Limiting: Implement exponential backoff for failed requests
Error Handling: Check for 4xx and 5xx status codes
Security: Always validate responses before processing

FAQ Section

Q: How frequently are token prices updated?

A: The 1inch API provides real-time price feeds with updates every 15-30 seconds across major DEXs.

Q: What chains does the API support?

A: Currently supports Ethereum, BSC, Polygon, and 10+ other EVM-compatible networks.

Q: Is there a sandbox environment for testing?

A: Yes, developers can access test endpoints with mock data through our developer portal.

For comprehensive integration support, explore our 👉 official API documentation.

Advanced Use Cases

Building arbitrage bots
Creating portfolio trackers
Developing cross-chain bridging interfaces

Note: Always verify contract addresses when interacting with new tokens.


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