Run the evo-cookbook recipes live against Dash testnet or mainnet — edit the code and hit run. It executes in your browser against the real network, no install. Recipes marked $ need a funded identity to fully run.
Whatever is in the editor when you press Run receives these values, and the code runs in your browser with your keys in reach. The recipes are fetched from 247bas/evo-cookbook and you can edit them freely — so paste a key you would not mind losing, and prefer testnet.