A complete Ethereum and Celo Rust library
Warning
This library is in the process of being deprecated. See #2667 for more information.
Add this to your Cargo.toml:
[dependencies]
ethers = "2.0"And this to your code:
use ethers::prelude::*;View the API reference here or the online book here.
Examples are organized into individual crates under the /examples folder.
You can run any of the examples by executing:
# cargo run -p <example-crate-name> --example <name>
cargo run -p examples-big-numbers --example math_operationsThere are many chains live which are Ethereum JSON-RPC & EVM compatible, but do not yet have
support for EIP-2718 Typed Transactions. This means
that transactions submitted to them by default in ethers-rs will have invalid serialization. To
address that, you must use the legacy feature flag:
[dependencies]
ethers = { version = "2.0", features = ["legacy"] }There is abigen support for Polygon and the Mumbai test network. It is recommended that you set the POLYGONSCAN_API_KEY environment variable.
You can get one here.
There is abigen support for Avalanche and the Fuji test network. It is recommended that you set the SNOWTRACE_API_KEY environment variable.
You can get one here.
Optimism is supported via the optimism feature flag:
[dependencies]
ethers = { version = "2.0", features = ["optimism"] }Optimism has a new transaction type: Deposited Transactions
with type ID 0x7E, which requires 3 new fields:
sourceHash: The hash which uniquely identifies the origin of the depositmint: The ETH value to mint on L2.isSystemTx: True if the tx does not interact with the L2 block gas pool
Note: the optimism and celo features are mutually exclusive.
Celo support is turned on via the feature-flag celo:
[dependencies]
ethers = { version = "2.0", features = ["celo"] }Celo's transactions differ from Ethereum transactions by including 3 new fields:
fee_currency: The currency fees are paid in (None for CELO, otherwise it's an Address)gateway_fee_recipient: The address of the fee recipient (None for no gateway fee paid)gateway_fee: Gateway fee amount (None for no gateway fee paid)
The feature flag enables these additional fields in the transaction request builders and in the transactions which are fetched over JSON-RPC.
Note: the optimism and celo features are mutually exclusive.
- Ethereum JSON-RPC Client
- Interacting and deploying smart contracts
- Type safe smart contract bindings code generation
- Querying past events
- Event monitoring as
Streams - ENS as a first class citizen
- Celo support
- Polygon support
- Avalanche support
- Optimism support
- Websockets /
eth_subscribe - Hardware Wallet Support
- Parity APIs (
tracing,parity_blockWithReceipts) - Geth TxPool API
- WASM Bindings (see note)
- FFI Bindings (see note)
- CLI for common operations
Websockets support is turned on via the feature-flag ws:
[dependencies]
ethers = { version = "2.0", features = ["ws"] }IPC support is turned on via the feature-flag ipc:
[dependencies]
ethers = { version = "2.0", features = ["ipc"] }If you are looking to connect to a HTTPS endpoint, then you need to enable the rustls or openssl feature.
feature-flags.
To enable rustls:
[dependencies]
ethers = { version = "2.0", features = ["rustls"] }To enable openssl:
[dependencies]
ethers = { version = "2.0", features = ["openssl"] }You should be able to build a wasm app that uses ethers-rs (see the example for reference). If ethers fails to compile in WASM, please open an issue. There is currently no plan to provide an official JS/TS-accessible library interface, as we believe viem or ethers.js serve that need very well.
Similarly, you should be able to build FFI bindings to ethers-rs. If ethers fails to compile in C library formats, please open an issue. There is currently no plan to provide official FFI bindings.
First, see if the answer to your question can be found in the API documentation. If the answer is not there, try opening an issue with the question.
Join the ethers-rs telegram to chat with the community!
Thanks for your help improving the project! We are so happy to have you! We have a contributing guide to help you get involved in the ethers-rs project.
If you open a Pull Request, do not forget to add your changes in the CHANGELOG, ensure your code is
properly formatted with cargo +nightly fmt and that Clippy is happy cargo clippy; you can even try to let clippy fix simple
issues itself: cargo +nightly clippy --fix
Tests require the following installed:
Additionally, the ETHERSCAN_API_KEY environment variable has to be set to run ethers-etherscan tests.
You can get one here.
- Yield Liquidator: Liquidator for Yield Protocol
- MEV Inspect: Miner Extractable Value inspector
- Ethers CCIP-Read: Ethers middleware for ENS CCIP-Read support
- Ethers Flashbots: Ethers middleware for Flashbots
- Ethers Fireblocks: Ethers middleware and signer for Fireblocks' API
- Celo Threshold BLS DKG: CLI for using Celo as a data availability network for the Joint-Feldman BLS DKG
- Celo Plumo Prover: Creates Celo's ultralight client proof from on-chain data
- Celo SNARK Setup Coordinator: Coordinator for executing a pipelined Groth16 SNARK setup
- ERC-4337 Bundler: Account Abstraction (ERC-4337) bundler
- zkSync Withdrawal Finalizer: Finalizer of withdrawals from zkSync Era to L1.
This library would not have been possible without the great work done in:
A lot of the code was inspired and adapted from them, to a unified and opinionated interface, built with async/await and std futures from the ground up.