> For the complete documentation index, see [llms.txt](https://docs.onchainden.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.onchainden.com/creating-transactions/simulations.md).

# Simulations

Den lets you simulate transactions as you create them, so you can easily iterate to the desired outcome. Simulations show you if a transaction succeeds, how state changes, and what event logs are emitted.

To simulate while creating a transaction, click `Simulate Transaction` in the sidebar on the right side of the page.

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