CUE makes it easy to validate data, write schemas, and ensure configurations align with policies.
CUE works with a wide range of tools and formats that you're already using such as Go, JSON, YAML, TOML, XML, OpenAPI, Protobuf, and JSON Schema.
For more information and documentation, including tutorials and guides, see cuelang.org.
The full range of installation methods for the cue command are listed on
cuelang.org,
including the official container image suitable for use with Docker.
Download the latest release from GitHub.
You need Go 1.25 or later to install CUE from source:
go install cuelang.org/go/cmd/cue@latest
You can also git clone the repository and build it directly via go install ./cmd/cue.
Built cue binaries include version information as reported by cue version,
which go build derives from the VCS. We recommend that downstream packagers
build releases from git tags rather than source archives to ensure this works.
The fastest way to learn the basics is to follow the language tour on the website.
The cuelang.org website also contains more documentation, including tutorials, how-to guides, concept guides, and references.
- The official CUE Language Specification
- The CUE Go API on pkg.go.dev
- Builtin packages and functions available from CUE programs
- The
cuecommand, a versatile interface for working with data, CUE, and its ecosystem
As a general rule, we support the two most recent major releases of Go, matching Go's security policy. For example, if CUE v0.7.0 is released when Go's latest version is 1.21.5, v0.7.x including any following bugfix releases will require Go 1.20 or later.
Guidelines for participating in CUE community spaces and a reporting process for handling issues can be found in the Code of Conduct.
- Ask questions via GitHub Discussions
- Chat with us on Slack and Discord
- Subscribe to our Community Calendar for community updates, demos, office hours, etc