Understand the project
Practical overview
When it fits
Use it when an Ethereum or Uniswap application needs Python-based handling of supported Universal Router calldata and commands.
Who it is for
- Python developers building Ethereum or Uniswap tooling
- Teams integrating Universal Router transaction decoding into backend, cloud or CLI systems
- Developers familiar with web3.py, blockchain concepts and decentralised exchanges
Documented uses
- Decode Universal Router transaction data
- Encode supported Universal Router commands
- Inspect submitted Uniswap router calldata
- Build transaction-handling components for Uniswap V2, V3 and V4
Before you choose
Requirements & limits
The repository is public and identifies an MIT license.
- The intended environment is Python with web3.py integration.
- The documented target is Uniswap Universal Router on Ethereum Mainnet.
- Command coverage is selective: several swaps, Permit2 actions, transfers and V4 operations are supported, while some commands are explicitly unsupported.
- Release notes describe asynchronous support and compatibility changes involving Python 3.9 and Web3 versions below 7.14.
- Developers need working knowledge of blockchain concepts, web3.py and DEX mechanics.
Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.
Evidence and transparency
Sources & review
Source record details
- Source availability
- Active
- Sources checked
- 2 October 2026
- Original website title
- Elnaril/uniswap-universal-router-decoder · Official homepage title · retained in its source language