X Join the global Web3 community at SmartCon 2022. Register today with the code BUILDER to access a special rate.

Chainlink Architecture Basic Request Model Decentralized Data Model Off-Chain Reporting Ethereum Proof-of-Stake Merge

Introduction to Data Feeds Using Data Feeds Data Feeds API Reference Historical Price Data Feed Registry Feed Registry API Reference Using ENS with Data Feeds Contract Addresses Ethereum Data Feeds BNB Chain Data Feeds Polygon (Matic) Data Feeds Gnosis Chain (xDai) Data Feeds HECO Chain Data Feeds Avalanche Data Feeds Fantom Data Feeds Arbitrum Data Feeds Harmony Data Feeds Optimism Data Feeds Moonriver Data Feeds Moonbeam Data Feeds Metis Data Feeds Klaytn Data Feeds L2 Sequencer Uptime Feeds

Introduction to Chainlink VRF Get a Random Number Programmatic Subscription Subscription Manager UI Security Considerations Best Practices Supported Networks Migrating to VRF v2

Introduction to Using Any API Make a GET Request Single Word Response Multi-Variable Responses Array Response Large Responses Existing Job Request Find Existing Jobs Testnet Oracles Data Provider Nodes API Reference

Introduction to Chainlink Keepers Time-based Automation Custom Logic Automation Create Keepers-compatible Contracts Manage your Upkeeps Creating Flexible Upkeeps Example Contracts EthBalanceMonitor Keepers Architecture Supported Networks Keepers Economics Keepers Release Notes FAQs

Videos and Tutorials Acquire testnet LINK Fund Your Contracts Install Frameworks LINK Token Contracts Developer Communications Getting Help Selecting Data Feeds Hackathon Resources Contributing to Chainlink

Chainlink Keepers Example Contracts

These contracts are tools to help you quickly deploy Keepers for specific use-cases. This list will be updated as more contracts become available. For more resources on Keepers, including videos and tutorials, click here.

Contracts

`EthBalanceMonitor`

EthBalanceMonitor documentation

This utility contract reviews the balances of a list of addresses and automatically tops them up. This automates the monitoring of Upkeep for registered contracts. To use this contract, you must add an address to the balance monitor Upkeep and make sure the balance monitor upkeep is well funded. Review the EthBalanceMonitor documentation to get started.

Vault Harvester

Vault Harvester repository

This example teaches you how to automate the process of compounding arbitrary yield farm reward tokens back into an initially deposited asset. Using Keepers to automate this process makes it more trustless and decentralized.

Batch NFT Reveal

Batch NFT Reveal repository

This example teaches how to use Chainlink VRF and Chainlink Keepers together. Using Keepers with batch NFT reveals, you can automate and further decentralize your NFTs.

Dynamic NFTs

Dynamic NFTs repository

This example teaches you how to create dynamic NFTs using Keepers.

What's Next

› EthBalanceMonitor

Need integration support?

Talk to an expert

Watch developer tutorials

Get technical support