Vscode-Antimony is a Visual Studio Code Extension Tool that adds language support for Antimony for building models in Systems Biology which makes it convenient to work simultaneously with the Antimony and Systems Biology Markup Language (SBML) representations of models. Vscode-Antimony provides syntax recognition, hover messages for displaying information (e.g., display name, annotation link, initialized value), code navigation for locating declaration of species and etc, and convenient annotations with commonly used knowledge sources (e.g., ChEBI and UniProt). There is support for detecting errors and likely errors in models.