Scilla IDEs

Neo-Savant @


A fully-fledged IDE used for writing, testing and deploying Scilla smart contracts painlessly. It can be tried out at

Neo-Savant helps Scilla developers to create and deploy Smart Contracts using an automated development environment, in-browser, with quick and intuitive controls.


  • Intuitive UI for easy deployment/contract invocation.
  • Multiple networks supported: Testnet, Mainnet and a Simulated Environment where you can test out contracts without spending $ZIL
  • Account management using Keystore, Ledger or ZilPay.
  • Simple, persistent file manager for managing your contracts that allows for renaming/deletion.
  • Possibility to import already deployed contracts and call their transitions.
  • Support for event in contracts, with automatic notifications in the UI.
  • Support for arbitrary gas price/gas limit in deployment/calls.

VSCode Extension by as1ndu


Method 1: Install directly from VS Marketplace

  • Launch VS Code Quick Open (Ctrl+P),
  • Use the following command
ext install as1ndu.scilla

Method 2: Manual install using VS Code extension package

  • Download the .visx file from the releases tab
  • Using the Install from VSIX command in the Extensions view command drop-down,: Install from VSIX command in the Command Palette, point to the .vsix file.


  • Syntax highlighting
  • Code Snippets
  • Debugging (Error & Warnings)
  • Cash Flow Analysis (ctrl + P then > type scilla then select Scilla: Cashflow Analyser)
  • Gas Usage Reports (Enable it in extension settings)
  • Type info for variables (Hover over dotted lines to see they type information of a variable)
  • Configuration via Vscode's UI


A vim plugin for editing Scilla contracts is provided.

You can install the vim config files through Pathogen by:

git clone ~/.vim/bundle/vim-scilla

Or through Vundle by adding the following line to your ~/.vimrc:

Plugin 'edisonljh/vim-scilla'

If you are using ALE, you can enable scilla-checker to show errors right inside vim.

Here is how to enable it:

  1. Install ALE vim plugin
  2. Make scilla-checker executable available (
  3. Set STDLIB dir in vimrc: let g:ale_scilla_checker_libdir = '<path>/stdlib'
  4. Set CHECKER in vimrc: let g:ale_scilla_checker_executable='<path>/scilla-checker'
  5. Enable the linter in vimrc: autocmd FileType scilla let b:ale_linters = ['checker']
  6. Open any scilla file and ensure checker is working: :ALEInfo Repo: vim-scilla.


An emacs major mode for editing Scilla contracts is provided. Add the following line to your .emacs file to load this mode for files ending with .scilla and .scillib. For enabling flycheck mode for Scilla (see When scilla-checker is available, type reporting is also supported. The key binding C-c C-t will print the type of the variable on which the cursor currently is.

;; For enabling flycheck mode for Scilla.
(setq scilla-root "/path/to/scilla/root")
;; Scilla mode
(load-file "/path/to/scilla-mode.el")