Glossary
Tenderly
A developer platform for the EVM — transaction simulation, contract debugging, alerting, and a dev sandbox. Powers transaction previews in wallets and dApps.
Tenderly's transaction-simulation engine lets developers and wallets preview what a transaction will actually do before signing it — balance changes, events, internal calls, reverts. Many modern wallets surface "what will this transaction do" by calling Tenderly's API behind the scenes.
The platform also ships full debugging (step-by-step call traces, state inspection), monitoring/alerting (event-triggered webhooks), and Tenderly Sandbox (a forked-state dev environment). It is one of the most-used backend tools across the EVM stack.