Contract identity
Name, standards, compiler, license, ETH balance, total supply, and verified source status.
Open-source Web3 inspector
unffold
Inspect EVM contracts, tokens, NFTs, proxies, vaults, and transactions from the terminal or Chrome. Paste an address, choose a mode, and get useful context fast.
CLI + Chrome extension
Etherscan V2 + Sourcify fallback
11 EVM chains
0.2.0
current npm package
11
supported chains
10+
inspection modes
MV3
Chrome extension
Install
CLI for depth. Extension for speed.
Use the terminal for deep review, or the Chrome popup when you are browsing explorers and dapps.
terminal
$ npm install -g unfold-evm
$ unffold 0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0
$ unffold
chrome extension
Install
# Install from the Chrome Web Store, or build from source:
$ git clone https://github.com/alva-p/unffold
$ cd unffold
$ npm install
$ npm run build:extension
# Load ./extension in chrome://extensionsDemo
Terminal and browser inspection.
Start with an address or transaction, then switch between risk, token, NFT, proxy, security, and trace modes.
ABI parsed - 18 functions / 6 events
name wstETH
standards ERC-20, ERC-2612
compiler Solidity 0.8.9
license GPL-3.0
EIP-1967 slots resolved
pattern Transparent Upgradeable Proxy
implementation 0x3e66...a2f1
admin 0xab23...4f22
upgrade history found - compare implementation changes
Upgradeable contract - privileged admin surface
No selfdestruct detected
No tx.origin usage
No unprotected privileged function matched
review delegatecall, guards, owner controls
Address detected on active tab
chain base
mode NFT preview
metadata ipfs://... normalized
copy summary before interacting
$ unffold 0xC02a...6Cc2 --export foundry --output ./test
Foundry fork test generated
$ unffold 0xC02a...6Cc2 --export abi
ABI JSON saved
$ unffold 0xC02a...6Cc2 --json
Scope
Built for Web3 reconnaissance.
Each mode gives builders, collectors, and auditors fast context before deeper manual review.
Upgradeability map
EIP-1967 Transparent, UUPS, Beacon, Diamond, and Minimal Proxy detection with implementation context.
Diff two contracts
Compare ABI and storage layout between deployments or proxy implementations during upgrade review.
Decode transactions
Read calldata and emitted events, with proxy-aware ABI resolution where available.
Read state and storage
Call view functions, stream decoded events, and inspect slots by index, variable, or mapping key.
Export artifacts
Generate Foundry fork test stubs, ABI JSON, or full contract JSON for downstream audit work.
Inspect while browsing
Detect addresses and transaction hashes from the active tab, then run focused modes without leaving Chrome.
NFT metadata preview
Read contract and token metadata, normalize IPFS and Arweave URLs, and show collection images when available.
Workflow
From address to review context.
Paste or detect
Paste an address in the CLI, or let the extension pick up addresses and transactions from the page.
Choose the mode
Run analyze, token, NFT, proxy, vault, game, security, trace, storage, read, watch, or diff.
Carry context forward
Copy a summary from Chrome, or export JSON, ABI, and Foundry artifacts from the CLI.
Contact
Inspect before you interact.
Use the open-source CLI for deep contract work, or the Chrome extension for fast checks while browsing explorers, dapps, token pages, and NFT collections.