diff --git a/AGENTS.md b/AGENTS.md
index 2e0aace..6ffe232 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1 +1,15 @@
 # Dear Agent
+
+This is a CLI tool for the Honeycomb.io API, written in Go.
+
+## Structure
+
+- `main.go` - entry point
+- `cmd/` - cobra command definitions (root, version, etc.)
+- `honeycomb/` - API client package
+
+## Install
+
+```shell
+go install github.com/maragudk/honeycomb-cli@latest
+```
diff --git a/README.md b/README.md
index d9ced71..7abdf8f 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,26 @@
-# template
+# honeycomb-cli
 
-[![Docs](https://pkg.go.dev/badge/maragu.dev/template)](https://pkg.go.dev/maragu.dev/template)
-[![CI](https://github.com/maragudk/template/actions/workflows/ci.yml/badge.svg)](https://github.com/maragudk/template/actions/workflows/ci.yml)
+[![CI](https://github.com/maragudk/honeycomb-cli/actions/workflows/ci.yml/badge.svg)](https://github.com/maragudk/honeycomb-cli/actions/workflows/ci.yml)
 
-Made with ✨sparkles✨ by [maragu](https://www.maragu.dev/): independent software consulting for cloud-native Go apps & AI engineering.
+A command-line interface for the [Honeycomb.io](https://www.honeycomb.io/) observability platform.
 
-[Contact me at markus@maragu.dk](mailto:markus@maragu.dk) for consulting work, or perhaps an invoice to support this project?
+Made with sparkles by [maragu](https://www.maragu.dev/).
+
+## Install
+
+```shell
+go install github.com/maragudk/honeycomb-cli@latest
+```
+
+## Usage
+
+```shell
+# Set your API key
+export HONEYCOMB_API_KEY=your-api-key
+
+# Or pass it as a flag
+honeycomb-cli --api-key your-api-key <command>
+
+# Verify your API key
+honeycomb-cli auth
+```
diff --git a/cmd/root.go b/cmd/root.go
new file mode 100644
index 0000000..c00166b
--- /dev/null
+++ b/cmd/root.go
@@ -0,0 +1,49 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var rootCmd = &cobra.Command{
+	Use:   "honeycomb-cli",
+	Short: "A CLI for the Honeycomb.io API",
+	Long:  "A command-line interface for interacting with the Honeycomb.io observability platform.",
+}
+
+// Execute the root command and return an exit code.
+func Execute() int {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		return 1
+	}
+	return 0
+}
+
+func init() {
+	rootCmd.PersistentFlags().String("api-key", "", "Honeycomb API key (or set HONEYCOMB_API_KEY)")
+	rootCmd.PersistentFlags().String("api-url", "https://api.honeycomb.io", "Honeycomb API URL (or set HONEYCOMB_API_URL)")
+}
+
+// apiKey returns the API key from the flag or environment variable.
+func apiKey(cmd *cobra.Command) string {
+	key, _ := cmd.Flags().GetString("api-key")
+	if key != "" {
+		return key
+	}
+	return os.Getenv("HONEYCOMB_API_KEY")
+}
+
+// apiURL returns the API URL from the flag or environment variable.
+func apiURL(cmd *cobra.Command) string {
+	url, _ := cmd.Flags().GetString("api-url")
+	if url != "https://api.honeycomb.io" {
+		return url
+	}
+	if envURL := os.Getenv("HONEYCOMB_API_URL"); envURL != "" {
+		return envURL
+	}
+	return url
+}
diff --git a/cmd/root_test.go b/cmd/root_test.go
new file mode 100644
index 0000000..5c7b0cd
--- /dev/null
+++ b/cmd/root_test.go
@@ -0,0 +1,16 @@
+package cmd_test
+
+import (
+	"testing"
+
+	"maragu.dev/is"
+
+	"github.com/maragudk/honeycomb-cli/cmd"
+)
+
+func TestExecute(t *testing.T) {
+	t.Run("returns 0 on success", func(t *testing.T) {
+		code := cmd.Execute()
+		is.Equal(t, 0, code)
+	})
+}
diff --git a/cmd/version.go b/cmd/version.go
new file mode 100644
index 0000000..2eb6361
--- /dev/null
+++ b/cmd/version.go
@@ -0,0 +1,20 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// version is set at build time via -ldflags.
+var version = "dev"
+
+func init() {
+	rootCmd.AddCommand(&cobra.Command{
+		Use:   "version",
+		Short: "Print the version",
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Println(version)
+		},
+	})
+}
diff --git a/go.mod b/go.mod
index f52a35e..38a8e78 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,13 @@
-module maragu.dev/template
+module github.com/maragudk/honeycomb-cli
 
 go 1.26
+
+require (
+	github.com/spf13/cobra v1.10.2
+	maragu.dev/is v0.3.1
+)
+
+require (
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..bf67f6c
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,12 @@
+github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/spf13/cobra v1.10.2 h1:DMTTonx5m65Ic0GOoRY2c16WCbHxOOw6xxezuLaBpcU=
+github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=
+github.com/spf13/pflag v1.0.9 h1:9exaQaMOCwffKiiiYk6/BndUBv+iRViNW+4lEMi0PvY=
+github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+maragu.dev/is v0.3.1 h1:1sj4Ewc9Ecqtvp1Aro+kRCpnuu4D5CB8w//GOfM7jFs=
+maragu.dev/is v0.3.1/go.mod h1:bviaM5S0fBshCw7wuumFGTju/izopZ/Yvq4g7Klc7y8=
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..e345bdb
--- /dev/null
+++ b/main.go
@@ -0,0 +1,11 @@
+package main
+
+import (
+	"os"
+
+	"github.com/maragudk/honeycomb-cli/cmd"
+)
+
+func main() {
+	os.Exit(cmd.Execute())
+}
diff --git a/template.go b/template.go
deleted file mode 100644
index 38cdfe4..0000000
--- a/template.go
+++ /dev/null
@@ -1 +0,0 @@
-package template