Product
Decode
Turn raw calldata and function selectors into human-readable actions.
Decode translates the raw calldata of a transaction into a readable action. Instead of a wall of hex, you see the function that was called and the arguments it was given.
How it works
Every function call begins with a four-byte selector. Decode resolves that selector against two independent signature databases — the 4byte Directory and OpenChain — then decodes the remaining calldata into typed parameters. Using both broadens coverage and adds resilience. A verified ABI produces the most precise, named results.
What you can decode
- Full transaction calldata (the 0x-prefixed input data).
- A standalone four-byte function selector.
- Calls against verified contracts, with named parameters where an ABI is available.
Unknown stays unknown
If a selector cannot be resolved, Decode says the signature is unknown rather than inventing a plausible-looking one.