Context-aware template filling.
Takes any Mustache or Handlebars template and a context record, resolves all variables with live data from the client context, and returns a fully rendered document. Supports conditional blocks, loops, and fallback values.
Illustrative output structure — actual results depend on your data.
{
"template": "onboarding-email-v3",
"variables_resolved": 22,
"conditionals_evaluated": 5,
"output_chars": 1840,
"render_ms": 120
}