All inputs and outputs of Functions are strictly typed. This allows Nango to help you with automatic data validation for your integrations.

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Built-in data validation

Inputs and outputs of Functions are defined with zod models. Zod is a very popular data validation package for TypeScript. Nango also automatically generates a JSON Schema definition of your zod models. This makes it easy to generate types for many different programming languages. Data validation is enabled by default:
  • During local development, Nango’s CLI will log type errors as warnings
    • You can optionally fail on type errors with a CLI flag
  • During production execution, type errors produce warnings in Nango’s logs but do not fail the execution
Refer to our data validation implementation guide for more details.