An advanced Ethereum transaction simulator and analyzer.
Build bundles, override state, inspect traces, and profile gas — all in one sleek UI.
Illusio lets you construct single transactions or multi-tx bundles, simulate them against a target block, and explore the results with decoded call traces, balance/storage diffs, events, and gas insights — without touching mainnet state.
- Single-Tx Simulation: Enter
from,to, value, gas, gasPrice, and data. - Function/Raw Toggle: Pick a verified contract function + params, or paste raw calldata.
- State Overrides: Temporary balances & storage slots for “what-if” scenarios.
- Decoded Results: Summary, Contracts, Balance State, Storage State, Events, Gas Profiler.
- Load Example: One-click example to see a full end-to-end run.
- Bundle Builder: Create ordered bundles of multiple transactions.
- Atomic Mode: All-or-nothing execution toggle.
- Per-Tx Access Lists: Pre-declare touched contracts/storage keys.
- State Overrides (Global): Apply balances/storage overrides used by the whole bundle.
- Deep Linking: The entire bundle is encoded in the URL for shareable simulations.
- View Selector: Top bar to switch between per-tx results within a bundle.
- Hash Search: Paste a tx hash to open a detailed decoded view.
- Re-Simulate: Quickly re-run a transaction at its original or latest block context.
- Tabs: Summary, Contracts, Balance/Storage diff, Events, Gas Profiler.
- ABI Awareness: Pull verified ABIs (Etherscan) for function selection/encoding.
- Verification Status: Inline status for “verified / unverified” contracts.
- Function Signatures: Clear display names (
name(type1,type2,...)).
- ABI-Aware Encoding via function + parameters or raw calldata.
- Access Lists to improve simulation accuracy and gas behavior.
- Trace Decoding with nested calls and revert reasons.
- Gas Profiling to spot the heaviest parts of execution.
- URL-Driven State for sharable, reproducible simulations.