diff --git a/.github/actions/e2e_verify/action.yml b/.github/actions/e2e_verify/action.yml
index 07abb7a889..6b0bcf885b 100644
--- a/.github/actions/e2e_verify/action.yml
+++ b/.github/actions/e2e_verify/action.yml
@@ -94,13 +94,11 @@ runs:
         COSIGN_PASSWORD: ${{ inputs.cosignPassword }}
         COSIGN_PRIVATE_KEY: ${{ inputs.cosignPrivateKey }}
       run: |
-        reports=(attestation-report-*.json)
-        if [ -z ${#reports[@]} ]; then
-            exit 1
-        fi
+        reports=attestation-report-*.json
 
-        for file in "${reports[@]}"; do
-          path=$(realpath "${file}")
-          cat "${path}"
-          bazel run //internal/api/attestationconfigapi/cli -- upload ${{ inputs.attestationVariant }} attestation-report "${path}"
-        done
+        report=$(bazel run //internal/api/attestationconfigapi/cli -- compare ${{ inputs.attestationVariant }} ${reports})
+
+        path=$(realpath "${report}")
+        cat "${path}"
+
+        bazel run //internal/api/attestationconfigapi/cli -- upload ${{ inputs.attestationVariant }} attestation-report "${path}"
diff --git a/internal/api/attestationconfigapi/cli/BUILD.bazel b/internal/api/attestationconfigapi/cli/BUILD.bazel
index 32ec8ec2bf..df2856aeba 100644
--- a/internal/api/attestationconfigapi/cli/BUILD.bazel
+++ b/internal/api/attestationconfigapi/cli/BUILD.bazel
@@ -10,6 +10,7 @@ go_binary(
 go_library(
     name = "cli_lib",
     srcs = [
+        "compare.go",
         "delete.go",
         "main.go",
         "upload.go",
diff --git a/internal/api/attestationconfigapi/cli/client/reporter.go b/internal/api/attestationconfigapi/cli/client/reporter.go
index 7e40d6a3e1..295c7b2b74 100644
--- a/internal/api/attestationconfigapi/cli/client/reporter.go
+++ b/internal/api/attestationconfigapi/cli/client/reporter.go
@@ -31,6 +31,25 @@ func reportVersionDir(attestation variant.Variant) string {
 	return path.Join(attestationconfigapi.AttestationURLPath, attestation.String(), cachedVersionsSubDir)
 }
 
+// IsInputNewerThanOtherVersion compares the input version with the other version and returns true if the input version is newer.
+// This function panics if the input versions are not TDX or SEV-SNP versions.
+func IsInputNewerThanOtherVersion(variant variant.Variant, inputVersion, otherVersion any) bool {
+	var result bool
+	actionForVariant(variant,
+		func() {
+			input := inputVersion.(attestationconfigapi.TDXVersion)
+			other := otherVersion.(attestationconfigapi.TDXVersion)
+			result = isInputNewerThanOtherTDXVersion(input, other)
+		},
+		func() {
+			input := inputVersion.(attestationconfigapi.SEVSNPVersion)
+			other := otherVersion.(attestationconfigapi.SEVSNPVersion)
+			result = isInputNewerThanOtherSEVSNPVersion(input, other)
+		},
+	)
+	return result
+}
+
 // UploadLatestVersion saves the given version to the cache, determines the smallest
 // TCB version in the cache among the last cacheWindowSize versions and updates
 // the latest version in the API if there is an update.
@@ -90,7 +109,7 @@ func (c Client) UploadLatestVersion(
 	}
 	c.log.Info(fmt.Sprintf("Found minimal version: %+v with date: %s", minVersion, minDate))
 
-	if !isInputNewerThanOtherVersion(attestationVariant, minVersion, latestVersionInAPI) {
+	if !IsInputNewerThanOtherVersion(attestationVariant, minVersion, latestVersionInAPI) {
 		c.log.Info(fmt.Sprintf("Input version: %+v is not newer than latest API version: %+v. Skipping list update", minVersion, latestVersionInAPI))
 		return ErrNoNewerVersion
 	}
@@ -200,7 +219,7 @@ func findMinimalVersion[T attestationconfigapi.TDXVersion | attestationconfigapi
 
 		// If the current minimal version has newer versions than the one we just fetched,
 		// update the minimal version to the older version.
-		if isInputNewerThanOtherVersion(variant, *minimalVersion, obj.getVersion()) {
+		if IsInputNewerThanOtherVersion(variant, *minimalVersion, obj.getVersion()) {
 			v := obj.getVersion().(T)
 			minimalVersion = &v
 			minimalDate = date
@@ -210,23 +229,6 @@ func findMinimalVersion[T attestationconfigapi.TDXVersion | attestationconfigapi
 	return *minimalVersion, minimalDate, nil
 }
 
-func isInputNewerThanOtherVersion(variant variant.Variant, inputVersion, otherVersion any) bool {
-	var result bool
-	actionForVariant(variant,
-		func() {
-			input := inputVersion.(attestationconfigapi.TDXVersion)
-			other := otherVersion.(attestationconfigapi.TDXVersion)
-			result = isInputNewerThanOtherTDXVersion(input, other)
-		},
-		func() {
-			input := inputVersion.(attestationconfigapi.SEVSNPVersion)
-			other := otherVersion.(attestationconfigapi.SEVSNPVersion)
-			result = isInputNewerThanOtherSEVSNPVersion(input, other)
-		},
-	)
-	return result
-}
-
 type apiVersionObject struct {
 	version string          `json:"-"`
 	variant variant.Variant `json:"-"`
diff --git a/internal/api/attestationconfigapi/cli/compare.go b/internal/api/attestationconfigapi/cli/compare.go
new file mode 100644
index 0000000000..49988fefbb
--- /dev/null
+++ b/internal/api/attestationconfigapi/cli/compare.go
@@ -0,0 +1,101 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+package main
+
+import (
+	"fmt"
+	"os"
+	"slices"
+
+	"github.com/edgelesssys/constellation/v2/internal/api/attestationconfigapi/cli/client"
+	"github.com/edgelesssys/constellation/v2/internal/attestation/variant"
+	"github.com/edgelesssys/constellation/v2/internal/file"
+	"github.com/edgelesssys/constellation/v2/internal/verify"
+	"github.com/google/go-tdx-guest/proto/tdx"
+	"github.com/spf13/afero"
+	"github.com/spf13/cobra"
+)
+
+func newCompareCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "compare VARIANT FILE [FILE...]",
+		Short:   "Returns the minimum version of all given attestation reports.",
+		Long:    "Compare a list of attestation reports and return the report with the minimum version.",
+		Example: "cli compare azure-sev-snp report1.json report2.json",
+		Args:    cobra.MatchAll(cobra.MinimumNArgs(2), arg0isAttestationVariant()),
+		RunE:    runCompare,
+	}
+
+	return cmd
+}
+
+func runCompare(cmd *cobra.Command, args []string) error {
+	cmd.SetOut(os.Stdout)
+
+	variant, err := variant.FromString(args[0])
+	if err != nil {
+		return fmt.Errorf("parsing variant: %w", err)
+	}
+
+	return compare(cmd, variant, args[1:], file.NewHandler(afero.NewOsFs()))
+}
+
+func compare(cmd *cobra.Command, attestationVariant variant.Variant, files []string, fs file.Handler) (retErr error) {
+	if !slices.Contains([]variant.Variant{variant.AWSSEVSNP{}, variant.AzureSEVSNP{}, variant.GCPSEVSNP{}, variant.AzureTDX{}}, attestationVariant) {
+		return fmt.Errorf("variant %s not supported", attestationVariant)
+	}
+
+	lowestVersion, err := compareVersions(attestationVariant, files, fs)
+	if err != nil {
+		return fmt.Errorf("comparing versions: %w", err)
+	}
+
+	cmd.Println(lowestVersion)
+	return nil
+}
+
+func compareVersions(attestationVariant variant.Variant, files []string, fs file.Handler) (string, error) {
+	readReport := readSNPReport
+	if attestationVariant.Equal(variant.AzureTDX{}) {
+		readReport = readTDXReport
+	}
+
+	lowestVersion := files[0]
+	lowestReport, err := readReport(files[0], fs)
+	if err != nil {
+		return "", fmt.Errorf("reading tdx report: %w", err)
+	}
+
+	for _, file := range files[1:] {
+		report, err := readReport(file, fs)
+		if err != nil {
+			return "", fmt.Errorf("reading tdx report: %w", err)
+		}
+
+		if client.IsInputNewerThanOtherVersion(attestationVariant, lowestReport, report) {
+			lowestVersion = file
+			lowestReport = report
+		}
+	}
+
+	return lowestVersion, nil
+}
+
+func readSNPReport(file string, fs file.Handler) (any, error) {
+	var report verify.Report
+	if err := fs.ReadJSON(file, &report); err != nil {
+		return nil, fmt.Errorf("reading snp report: %w", err)
+	}
+	return convertTCBVersionToSNPVersion(report.SNPReport.LaunchTCB), nil
+}
+
+func readTDXReport(file string, fs file.Handler) (any, error) {
+	var report *tdx.QuoteV4
+	if err := fs.ReadJSON(file, &report); err != nil {
+		return nil, fmt.Errorf("reading tdx report: %w", err)
+	}
+	return convertQuoteToTDXVersion(report), nil
+}
diff --git a/internal/api/attestationconfigapi/cli/delete.go b/internal/api/attestationconfigapi/cli/delete.go
index 013c69481d..a800f7e800 100644
--- a/internal/api/attestationconfigapi/cli/delete.go
+++ b/internal/api/attestationconfigapi/cli/delete.go
@@ -26,11 +26,11 @@ import (
 // newDeleteCmd creates the delete command.
 func newDeleteCmd() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:     "delete {aws-sev-snp|azure-sev-snp|azure-tdx|gcp-sev-snp} {attestation-report|guest-firmware} <version>",
+		Use:     "delete VARIANT KIND <version>",
 		Short:   "Delete an object from the attestationconfig API",
 		Long:    "Delete a specific object version from the config api. <version> is the name of the object to delete (without .json suffix)",
 		Example: "COSIGN_PASSWORD=$CPW COSIGN_PRIVATE_KEY=$CKEY cli delete azure-sev-snp attestation-report 1.0.0",
-		Args:    cobra.MatchAll(cobra.ExactArgs(3), isAttestationVariant(0), isValidKind(1)),
+		Args:    cobra.MatchAll(cobra.ExactArgs(3), arg0isAttestationVariant(), isValidKind(1)),
 		PreRunE: envCheck,
 		RunE:    runDelete,
 	}
@@ -40,7 +40,7 @@ func newDeleteCmd() *cobra.Command {
 		Short:   "delete all objects from the API path constellation/v1/attestation/<csp>",
 		Long:    "Delete all objects from the API path constellation/v1/attestation/<csp>",
 		Example: "COSIGN_PASSWORD=$CPW COSIGN_PRIVATE_KEY=$CKEY cli delete recursive azure-sev-snp",
-		Args:    cobra.MatchAll(cobra.ExactArgs(1), isAttestationVariant(0)),
+		Args:    cobra.MatchAll(cobra.ExactArgs(1), arg0isAttestationVariant()),
 		RunE:    runRecursiveDelete,
 	}
 
diff --git a/internal/api/attestationconfigapi/cli/main.go b/internal/api/attestationconfigapi/cli/main.go
index e6e951f1b1..ee1b0c354c 100644
--- a/internal/api/attestationconfigapi/cli/main.go
+++ b/internal/api/attestationconfigapi/cli/main.go
@@ -27,8 +27,11 @@ const (
 	distributionID      = constants.CDNDefaultDistributionID
 	envCosignPwd        = "COSIGN_PASSWORD"
 	envCosignPrivateKey = "COSIGN_PRIVATE_KEY"
-	// versionWindowSize defines the number of versions to be considered for the latest version. Each week 5 versions are uploaded for each node of the verify cluster.
-	versionWindowSize = 15
+	// versionWindowSize defines the number of versions to be considered for the latest version.
+	// Through our weekly e2e tests, each week 2 versions are uploaded:
+	// One from a stable release, and one from a debug image.
+	// A window size of 6 ensures we update only after a version has been "stable" for 3 weeks.
+	versionWindowSize = 6
 )
 
 var (
@@ -56,6 +59,7 @@ func newRootCmd() *cobra.Command {
 
 	rootCmd.AddCommand(newUploadCmd())
 	rootCmd.AddCommand(newDeleteCmd())
+	rootCmd.AddCommand(newCompareCmd())
 
 	return rootCmd
 }
diff --git a/internal/api/attestationconfigapi/cli/upload.go b/internal/api/attestationconfigapi/cli/upload.go
index 54edb01c65..4032f46266 100644
--- a/internal/api/attestationconfigapi/cli/upload.go
+++ b/internal/api/attestationconfigapi/cli/upload.go
@@ -29,7 +29,7 @@ import (
 
 func newUploadCmd() *cobra.Command {
 	uploadCmd := &cobra.Command{
-		Use:   "upload {aws-sev-snp|azure-sev-snp|azure-tdx|gcp-sev-snp} {attestation-report|guest-firmware} <path>",
+		Use:   "upload VARIANT KIND FILE",
 		Short: "Upload an object to the attestationconfig API",
 
 		Long: fmt.Sprintf("Upload a new object to the attestationconfig API. For snp-reports the new object is added to a cache folder first.\n"+
@@ -41,7 +41,7 @@ func newUploadCmd() *cobra.Command {
 		),
 		Example: "COSIGN_PASSWORD=$CPW COSIGN_PRIVATE_KEY=$CKEY cli upload azure-sev-snp attestation-report /some/path/report.json",
 
-		Args:    cobra.MatchAll(cobra.ExactArgs(3), isAttestationVariant(0), isValidKind(1)),
+		Args:    cobra.MatchAll(cobra.ExactArgs(3), arg0isAttestationVariant(), isValidKind(1)),
 		PreRunE: envCheck,
 		RunE:    runUpload,
 	}
@@ -120,24 +120,20 @@ func uploadReport(
 		latestVersion = latestVersionInAPI.SEVSNPVersion
 
 		log.Info(fmt.Sprintf("Reading SNP report from file: %s", cfg.path))
-		var report verify.Report
-		if err := fs.ReadJSON(cfg.path, &report); err != nil {
-			return fmt.Errorf("reading snp report: %w", err)
+		newVersion, err = readSNPReport(cfg.path, fs)
+		if err != nil {
+			return err
 		}
-
-		newVersion = convertTCBVersionToSNPVersion(report.SNPReport.LaunchTCB)
 		log.Info(fmt.Sprintf("Input SNP report: %+v", newVersion))
 
 	case variant.AzureTDX{}:
 		latestVersion = latestVersionInAPI.TDXVersion
 
 		log.Info(fmt.Sprintf("Reading TDX report from file: %s", cfg.path))
-		var report *tdx.QuoteV4
-		if err := fs.ReadJSON(cfg.path, &report); err != nil {
-			return fmt.Errorf("reading tdx report: %w", err)
+		newVersion, err = readTDXReport(cfg.path, fs)
+		if err != nil {
+			return err
 		}
-
-		newVersion = convertQuoteToTDXVersion(report)
 		log.Info(fmt.Sprintf("Input TDX report: %+v", newVersion))
 
 	default:
diff --git a/internal/api/attestationconfigapi/cli/validargs.go b/internal/api/attestationconfigapi/cli/validargs.go
index 0c77ce0512..b5366b0f96 100644
--- a/internal/api/attestationconfigapi/cli/validargs.go
+++ b/internal/api/attestationconfigapi/cli/validargs.go
@@ -7,6 +7,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 package main
 
 import (
+	"errors"
 	"fmt"
 	"strings"
 
@@ -14,17 +15,17 @@ import (
 	"github.com/spf13/cobra"
 )
 
-func isAttestationVariant(arg int) cobra.PositionalArgs {
+func arg0isAttestationVariant() cobra.PositionalArgs {
 	return func(_ *cobra.Command, args []string) error {
-		attestationVariant, err := variant.FromString(args[arg])
+		attestationVariant, err := variant.FromString(args[0])
 		if err != nil {
-			return fmt.Errorf("argument %s isn't a valid attestation variant", args[arg])
+			return errors.New("argument 0 isn't a valid attestation variant")
 		}
 		switch attestationVariant {
 		case variant.AWSSEVSNP{}, variant.AzureSEVSNP{}, variant.AzureTDX{}, variant.GCPSEVSNP{}:
 			return nil
 		default:
-			return fmt.Errorf("argument %s isn't a supported attestation variant", args[arg])
+			return errors.New("argument 0 isn't a supported attestation variant")
 		}
 	}
 }
@@ -32,7 +33,7 @@ func isAttestationVariant(arg int) cobra.PositionalArgs {
 func isValidKind(arg int) cobra.PositionalArgs {
 	return func(_ *cobra.Command, args []string) error {
 		if kind := kindFromString(args[arg]); kind == unknown {
-			return fmt.Errorf("argument %s isn't a valid kind", args[arg])
+			return fmt.Errorf("argument %s isn't a valid kind: must be one of [%q, %q]", args[arg], attestationReport, guestFirmware)
 		}
 		return nil
 	}