SFMC Language Service
VS Code / Cursor extension for AMPscript, SSJS, Handlebars, and SFMC HTML — completions, hover, diagnostics, formatting, snippets.
Engagement
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Brings language intelligence to Engagement and Marketing Cloud Next content: syntax highlighting, completions, hover docs, diagnostics, built-in formatting (Format Document / Format on Save), and MCP wiring via mcp-server-sfmc.
Since v3.0.0 the extension bundles Prettier and prettier-plugin-sfmc in-process, so formatting works for AMPscript, SSJS, SFMC HTML, MCN Handlebars, and SQL with no separate install.
Powered by the same catalogs behind ssjs.guide and the ESLint/Prettier plugins.
Read the deep-dive: Why the SFMC Language Service Is Great on Its Own….