A Decentralized Oracle Protocol

Tellor is a transparent and permissionless oracle protocol for your smart contract to easily get any data whenever it needs it.


The protocol incentivizes an open, permissionless network of data reporting and data validation, ensuring that data can be provided by anyone and checked by everyone.

Learn the Fundamentals



Get any market data from any API(s).

Get Started

Get any data type you need.

Get Started


Become a reporter

Protocol data is provided by a network of reporters running Telliot, an open-source reporting client.

setup telliot
The Latest

Tellor Deploys to Arbitrum

| Integrations, Tellor Updates | No Comments
Tellor is now live on Arbitrum Mainnet and Goerli Testnet!  Tellor is a decentralized and permissionless oracle protocol that uses…

🔴 building on @optimismFND ?
🔮 need a permissionless oracle?
👀 check the docs!

👋 hey tellor community,
👷🏽‍♀️ watch today's dev call & get up to speed!


We have a new batch of Expert Solidity graduates! 🥳

Thank you to the fantastic teaching team at @Extropy, our sponsors @WeAreTellor & @TenderlyApp and to everyone who showed initiative and interest!

Congratulations everyone!

👨🏻‍🏫 watch as intern / resident math wiz @danflo2727 breaks down the math behind automated market makers:

🔔 live in philly?

👨‍🏫 our very own @themandalore9 will be speaking at this year's @DeFi_Philly conference!

🎟️ buy tix here:

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