7 Best DeFi APIs for Real-Time Price Feeds

Summary of DeFi API Price Feeds

When choosing a price feed for your DeFi application, it's crucial to understand the differences between on-chain oracles and REST-based APIs. Here’s a breakdown of some popular options:

1. Chainlink:

   • Type: On-chain oracle.
   • Chains: 20+ supported.
   • Free Tier: Free (on-chain).
   • Authentication Required: No (RPC only).
   • Update Speed: 0.5-1% deviation / 1h heartbeat.
   • Best Use Case: Smart contract price feeds.

2. Pyth Network:

   • Type: On-chain oracle.
   • Chains: 40+ supported.
   • Free Tier: Free (on-chain).
   • Authentication Required: No.
   • Update Speed: 400ms (1ms with Lazer).
   • Best Use Case: High-frequency DeFi.

3. Swap API:

   • Type: DEX execution API.
   • Chains: 46 supported.
   • Free Tier: Free.
   • Authentication Required: No

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