---

name: render-template description: Render templates with variable substitution using {{variable}} or ${variable} syntax. Use for generating formatted output, reports, commit messages, or any text requiring variable interpolation.

Render Template

Render templates with variable substitution.

Instructions

Step 1: Receive Input

• template: String (template with placeholders)
• variables: Object (key-value pairs)
• syntax: mustache|shell|mixed (default: mustache)

Step 2: Supported Syntax

• Mustache: {{variable}}, {{object.property}}
• Shell: ${variable}, ${VARIABLE}

Step 3: Resolution Rules

• Direct match: {{name}} → variables.name
• Nested: {{user.name}} → variables.user.name
• Missing: Replace with empty string

Step 4: Optional Filters

• {{variable | uppercase}}
• {{variable | lowercase}}
• {{variable | capitalize}}

Example

Input:

Copy{
  "template": "{{type}}({{scope}}): {{description}}",
  "variables": { "type": "feat", "scope": "auth", "description": "add OAuth2" }
}

Output: feat(auth): add OAuth2

Error Handling

• Missing Variables: Replace with empty string
• Invalid Syntax: Return error
• Type Mismatch: Convert to string