eth_call Sandbox

Contract workbench

Inspect snapshot state. Compose a call. Decode the result.

Quick start Snapshot → optional ABI → execute call

Export snapshot v1 JSON batches with reth-contract-snapshot, then import accounts from a shared anchor block. Attach an ABI for named functions, or use raw calldata directly.

Grab a ready-made example from the examples folder and drop its snapshot JSON into the Snapshot state panel. Follow the example's README for ABI files and calls to try.

Calls run locally in REVM / WebAssembly without changing snapshot state. Snapshots stay in this tab; validated ABIs are saved in this browser.

Snapshot state

0 loaded

↓ Import snapshots Choose files or drop them here Snapshot v1 · .json · multiple files supported

Need a snapshot? Browse the examples folder ↗.

No accounts loaded.
Import a snapshot to select a call target.

Contract ABI

0 saved

Optional for raw calls. Saved per contract in this browser.

Contract address Choose ABI JSON ABI JSON

Compose call

Target contract Caller Value (wei) Gas limit

Function

Ctrl / ⌘ + Enter

Import a snapshot to get started.

Execution result

Idle

Gas used: —
Decoded: —

Decoded output / reason

No execution yet. Run a call to inspect return values, gas usage, or a revert reason.

Calldata

0x

Raw output

0x