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