> For the complete documentation index, see [llms.txt](https://docs.cyclonechain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cyclonechain.com/develop/documentation/default-virtual-machine.md). # Default Virtual Machine Scripts for the default virtual machine (VM) are passed as JSON strings. The JSON object contains two parameters: method and data. The method parameter specifies the action to be performed by the VM, and it can have two values: save for saving a smart contract and execute for executing a transaction. The data parameter contains the JavaScript script for the smart contract or transaction execution. Below is the documentation detailing each of the built-in functions available in the default VM [
](http://164.68.127.226:3432/)**SWAGGER documentation:** [**http://164.68.127.226:9231/doc/index.html**](http://164.68.127.226:9231/doc/index.html) **cyPlay (IDE) developer tool:** [**http://164.68.127.226:3432/**](http://164.68.127.226:3432/)