Overview of gRPC extensions | Fern Documentation

Fern supports a variety of gRPC extensions that enhance your API specification and generate higher-quality SDKs.

Available extensions

The table below shows all available extensions and links to detailed documentation for each one.

Extension	Description
`x-fern-ignore`	Skip reading specific services, methods, or messages
`x-fern-examples`	Provide additional examples for better SDK documentation
`x-fern-pagination`	Configure pagination for methods that return lists
`x-fern-retry`	Configure retry behavior for methods
`x-fern-timeout`	Configure timeout settings for methods
`x-fern-error-handling`	Configure error handling for methods
`x-fern-availability`	Mark features as available in specific SDK versions
`x-fern-streaming`	Mark methods as streaming for appropriate SDK generation
`x-fern-server-name`	Specify custom names for different server environments
`x-fern-base-path`	Configure base paths for generated SDK clients
`x-fern-sdk-group-name`	Group related services in the SDK
`x-fern-union-naming`	Configure naming for oneof fields in SDKs
`x-fern-validation`	Add validation rules for message fields

If there’s an extension you want that doesn’t already exist, file an issue to start a discussion about it.