API3

API3 dAPI Data Feeds

Managed decentralized API (dAPI) data feeds sourced directly from first-party oracle nodes operated by the data providers themselves. Each feed aggregates signed data from multiple Airnode operators and is updated on-chain based on deviation thresholds (0.25%, 0.5%, 1%, 2.5%, or 5%) and a 24-hour heartbeat. Smart contracts read feeds via the IProxy/AggregatorV2V3Interface-compatible Api3ReaderProxyV1 contract. Over 150 asset pairs — crypto, forex, equities, and commodities — are available across 40+ EVM networks. Subscriptions are purchased through the API3 Market; testnet plans are 7-day trials and mainnet plans are 3-month subscriptions.

GitHub

Documentation

📖
Documentation
https://docs.api3.org/dapps/
📖
GettingStarted
https://docs.api3.org/dapps/

Other Resources

🔗
Integrations
https://docs.api3.org/dapps/integration/
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/api3/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
aid: api3:dapi-data-feeds
name: API3 dAPI Data Feeds
description: Managed decentralized API (dAPI) data feeds sourced directly from first-party oracle nodes
  operated by the data providers themselves. Each feed aggregates signed data from multiple Airnode operators
  and is updated on-chain based on deviation thresholds (0.25%, 0.5%, 1%, 2.5%, or 5%) and a 24-hour heartbeat.
  Smart contracts read feeds via the IProxy/AggregatorV2V3Interface-compatible Api3ReaderProxyV1 contract.
  Over 150 asset pairs — crypto, forex, equities, and commodities — are available across 40+ EVM networks.
  Subscriptions are purchased through the API3 Market; testnet plans are 7-day trials and mainnet plans
  are 3-month subscriptions.
humanURL: https://market.api3.org/
baseURL: https://market.api3.org
tags:
- Data Feeds
- Price Feeds
- dAPI
- Oracle
- DeFi
- EVM
properties:
- type: Documentation
  url: https://docs.api3.org/dapps/
- type: Integrations
  url: https://docs.api3.org/dapps/integration/
- type: GettingStarted
  url: https://docs.api3.org/dapps/
x-features:
- 150+ price pairs (crypto, forex, equities, commodities)
- Configurable deviation thresholds (0.25% – 5%)
- 24-hour heartbeat interval
- AggregatorV2V3Interface-compatible proxy contracts
- 40+ EVM chains including Ethereum, Arbitrum, Base, BNB Chain, Polygon, Avalanche
- No minimum commitment; pay-as-you-go subscription
x-use-cases:
- DeFi lending protocols needing reliable collateral price feeds
- Derivatives and perpetuals platforms requiring low-latency mark prices
- Stablecoin systems referencing external price anchors
- Prediction markets and options protocols reading settlement prices