Your local contract interfaces

ABI library

Save ABIs for private, unverified, or project-specific contracts. Their functions become available in the encoder and automatic decoder on this device.

Local by default

Custom ABIs are stored in this browser, never uploaded, and checked before public signature databases. 20 bundled ABIs remain available without adding anything here. Export custom ABIs before clearing site data or moving devices.

Saved ABIs are selector candidates, not contract-address bindings. If more than one function fits the same bytes, the decoder keeps the alternatives visible.

Saved ABIs

Opening library…