Documentation for how to use Sablier, the protocol for real-time finance on the Ethereum blockchain.
This is a technical account on how to integrate Sablier into your own application. If you have questions, please join the #development channel in the Sablier Discord server; our team, and members of the community, look forward to helping you.
What we will cover:
1.
Smart contract architecture and ABI.
2.
Networks and typical gas costs.
3.
How to create, withdraw from and cancel streams.
If you're looking for a high-level overview, you may want to read the FAQ first.
Codebase
The Sablier protocol codebase is hosted on GitHub and the source code for each contract is verified on Etherscan.
Depending on what web3 library you're using, you may need to get hold of the Sablier ABI (Application Binary Interface). The ABI acts as an interface between two program modules, one of which is the smart contract and the other the machine code.
The Sablier.json artifact should be generated in the relative build/contracts folder.
Networks
Depending on what Ethereum network you want to use Sablier with, you will need a different contract address. Sablier runs on top of one single master contract that manages all streams.
Network
Address
Mainnet
0xCD18eAa163733Da39c232722cBC4E8940b1D8888
Goerli
0xFc7E3a3073F88B0f249151192812209117C2014b
Kovan
0x5eb34b5d5c75ce2119078e5b3f6a3f30e457e46b
Rinkeby
0xC1f3af5DC05b0C51955804b2afc80eF8FeED67b9
Ropsten
0xcd79FFea8e2E6eFDAe92554Fdd1F154bB7c62D0f
Testnet Tokens
If you want to use the Sablier interfaces on a testnet, you need to get some testnet DAI first. To do this, you have to go to the Etherscan page of the associated token, tap the "Write Contract" tab, connect your Ethereum wallet and call the mint method. Note that the token has 18 decimals, so you may want to use a unit converter.
Token
Network
Etherscan
TestnetDAI
Goerli
0x97cb342Cf2F6EcF48c1285Fb8668f5a4237BF862
TestnetDAI
Kovan
0x79dfab686Ef87cd2c871D5182F08538589234189
TestnetDAI
Rinkeby
0x5eD8BD53B0c3fa3dEaBd345430B1A3a6A4e8BD7C
TestnetDAI
Ropsten
0x3ac1c6ff50007ee705f36e40F7Dc6f393b1bc5e7
Gas Costs
The gas usage of the Sablier protocol is not deterministic and varies by user. Calls to third-party contracts, such as ERC-20 tokens, may use an arbitrary amount of gas. We provide the table below for guidance:
Action
Typical Gas Cost
Create Stream
<240K
Withdraw from Stream
<80K
Cancel Stream
<90K
Data
Our blockchain data can be accessed via our subgraphs, which you interact with via a GraphQL client. We recommend Apollo.