Quickly Build and Debug AppSync & API Gateway Mapping Templates
Mapping Tool has everything you need to build perfect templates...
Easily differentiate VTL from plain text or JSON. Purpose-built and very colorful.
Build faster with intelligent variable, property, method, and directive suggestions.
Ensure you're only accessing variables, methods, and context properties that actually exist.
Prevent mistakes and get useful suggestions, even when a variable's type changes.
Full VTL, AWS, and Java documentation including parameter info and return types.
More accurate than AWS emulators. Be confident your templates will work when deployed.
Go line-by-line until your mapping template is perfect.
Validate output against an AWS API or custom schema.
Designed to help you confidently navigate mapping templates, easily differentiate VTL from plain text, and quickly identify syntax errors. Plus, it's very colorful.
Code completion, documentation, snippets, parameter hints. Covering VTL, AWS-specific context/utilities, Java methods, and even variables declared elsewhere in the template.
Customize any input value or context property, or generate example data at the click of a button. Mapping Tool will guide you and help avoid mistakes.
Say goodbye to missing parameters, methods and properties that don't exist, syntax errors, weird AWS quirks, and more.
Save some keystrokes and brain power by using directive snippets.
Quickly check variable types and read documentation by hovering over anything.
Complete control over all input values and context properties.
Save time and avoid typos by generating example context data.
Get help, help others, or show off your template with a sharable URL.
Because looking at VTL is bad enough for your eyes.
Save your template in a JSON file and import it again later.
Found a bug? Have a feature request? We'd love to hear from you at firstname.lastname@example.org
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