# function-sdk-go
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The [Go][go] SDK for writing [composition functions][functions].

This SDK is currently a beta. We try to avoid breaking changes, but it will not
have a stable API until it reaches v1.0.0. It follows the same [contributing
guidelines] as Crossplane.

To learn how to use this SDK:

* [Follow the guide to writing a composition function in Go][function guide]
* [Learn about how composition functions work][functions]
* [Read the package documentation][package docs]

If you just want to jump in and get started, consider using the
[function-template-go] template repository.

[go]: https://go.dev
[functions]: https://docs.crossplane.io/latest/concepts/composition-functions
[contributing guidelines]: https://github.com/crossplane/crossplane/tree/master/contributing
[function guide]: https://docs.crossplane.io/knowledge-base/guides/write-a-composition-function-in-go
[package docs]: https://pkg.go.dev/github.com/crossplane/function-sdk-go
[function-template-go]: https://github.com/crossplane/function-template-go