diff --git a/server/datacatalog/datacatalogv2/datacatalogv2adapter/cache.go b/server/datacatalog/datacatalogv2/datacatalogv2adapter/cache.go
index 7da45d6af..c76fd7c6b 100644
--- a/server/datacatalog/datacatalogv2/datacatalogv2adapter/cache.go
+++ b/server/datacatalog/datacatalogv2/datacatalogv2adapter/cache.go
@@ -18,7 +18,7 @@ func New(cmsbase, project string) (*plateauapi.RepoWrapper, error) {
 }
 
 func From(fetcher datacatalogv2.Fetchable, project string) *plateauapi.RepoWrapper {
-	return plateauapi.NewRepoWrapper(nil, func(ctx context.Context, repo *plateauapi.Repo) error {
+	r := plateauapi.NewRepoWrapper(nil, func(ctx context.Context, repo *plateauapi.Repo) error {
 		r, err := fetchAndCreateCache(ctx, project, fetcher, datacatalogv2.FetcherDoOptions{})
 		if err != nil {
 			return err
@@ -26,6 +26,8 @@ func From(fetcher datacatalogv2.Fetchable, project string) *plateauapi.RepoWrapp
 		*repo = r
 		return nil
 	})
+	r.SetName(fmt.Sprintf("%s(v2)", project))
+	return r
 }
 
 func fetchAndCreateCache(ctx context.Context, project string, fetcher datacatalogv2.Fetchable, opts datacatalogv2.FetcherDoOptions) (*plateauapi.InMemoryRepo, error) {
diff --git a/server/datacatalog/datacatalogv3/cms.go b/server/datacatalog/datacatalogv3/cms.go
index 7e16b563e..80646869b 100644
--- a/server/datacatalog/datacatalogv3/cms.go
+++ b/server/datacatalog/datacatalogv3/cms.go
@@ -18,7 +18,9 @@ func NewCMS(cms cms.Interface) *CMS {
 }
 
 func (c *CMS) GetAll(ctx context.Context, project string) (*AllData, error) {
-	all := AllData{}
+	all := AllData{
+		Name: project,
+	}
 
 	// TODO: get CMSInfo
 
diff --git a/server/datacatalog/datacatalogv3/conv.go b/server/datacatalog/datacatalogv3/conv.go
index 9b5c6a31b..7aaf20909 100644
--- a/server/datacatalog/datacatalogv3/conv.go
+++ b/server/datacatalog/datacatalogv3/conv.go
@@ -9,6 +9,7 @@ import (
 
 func (all *AllData) Into() (res *plateauapi.InMemoryRepoContext, warning []string) {
 	res = &plateauapi.InMemoryRepoContext{
+		Name:     all.Name,
 		Areas:    plateauapi.Areas{},
 		Datasets: plateauapi.Datasets{},
 	}
diff --git a/server/datacatalog/datacatalogv3/conv_dataset_plateau_seed.go b/server/datacatalog/datacatalogv3/conv_dataset_plateau_seed.go
index d13bd02fc..ca7068b00 100644
--- a/server/datacatalog/datacatalogv3/conv_dataset_plateau_seed.go
+++ b/server/datacatalog/datacatalogv3/conv_dataset_plateau_seed.go
@@ -41,12 +41,22 @@ func plateauDatasetSeedsFrom(i *PlateauFeatureItem, dt *plateauapi.PlateauDatase
 		return
 	}
 
-	if dt.Code == "bldg" && len(i.Items) == 0 {
+	items := i.Items
+	if len(i.Data) > 0 {
+		items = append(items, lo.Map(i.Data, func(url string, _ int) PlateauFeatureItemDatum {
+			return PlateauFeatureItemDatum{
+				Data: []string{url},
+				Desc: i.Desc,
+			}
+		})...)
+	}
+
+	if dt.Code == "bldg" {
 		seeds, w := plateauDatasetSeedsFromBldg(i, dt, cityCode, area.Wards)
 		warning = append(warning, w...)
 		res = append(res, seeds...)
 	} else {
-		for _, item := range i.Items {
+		for _, item := range items {
 			seeds, w := plateauDatasetSeedsFromItem(i, item, dt, dic, cityCode)
 			warning = append(warning, w...)
 			res = append(res, seeds)
@@ -70,13 +80,13 @@ func plateauDatasetSeedsFrom(i *PlateauFeatureItem, dt *plateauapi.PlateauDatase
 }
 
 func plateauDatasetSeedsFromItem(i *PlateauFeatureItem, item PlateauFeatureItemDatum, dt *plateauapi.PlateauDatasetType, dic Dic, cityCode string) (res plateauDatasetSeed, warning []string) {
-	assets := lo.Map(item.Data, func(url string, _ int) *AssetName {
+	assets := lo.FilterMap(item.Data, func(url string, _ int) (*AssetName, bool) {
 		n := nameWithoutExt(nameFromURL(url))
 		an := ParseAssetName(n)
 		if an == nil || !an.Ex.IsValid() {
 			warning = append(warning, fmt.Sprintf("plateau %s %s: invalid asset name: %s", cityCode, dt.Code, n))
 		}
-		return an
+		return an, an != nil
 	})
 	if len(assets) == 0 {
 		// warning = append(warning, fmt.Sprintf("plateau %s %s: no assets", cityCode, dt.Code))
@@ -86,7 +96,7 @@ func plateauDatasetSeedsFromItem(i *PlateauFeatureItem, item PlateauFeatureItemD
 	assetName := assets[0]
 	key, dickey := assetName.Ex.ItemKey(), assetName.Ex.DicKey()
 	if key == "" || dickey == "" {
-		warning = append(warning, fmt.Sprintf("plateau %s %s: invalid asset name key: %s", cityCode, dt.Code, assets[0].Ex.Ex))
+		warning = append(warning, fmt.Sprintf("plateau %s %s: invalid asset name key: %s", cityCode, dt.Code, assetName.Ex.Ex))
 		return
 	}
 
diff --git a/server/datacatalog/datacatalogv3/model.go b/server/datacatalog/datacatalogv3/model.go
index b1dd2571a..7d7383ca9 100644
--- a/server/datacatalog/datacatalogv3/model.go
+++ b/server/datacatalog/datacatalogv3/model.go
@@ -3,6 +3,7 @@ package datacatalogv3
 import "github.com/eukarya-inc/reearth-plateauview/server/datacatalog/plateauapi"
 
 type AllData struct {
+	Name         string
 	PlateauSpecs []plateauapi.PlateauSpecSimple
 	FeatureTypes FeatureTypes
 	City         []*CityItem
diff --git a/server/datacatalog/datacatalogv3/repo.go b/server/datacatalog/datacatalogv3/repo.go
index 428570edf..3ce3b0ba6 100644
--- a/server/datacatalog/datacatalogv3/repo.go
+++ b/server/datacatalog/datacatalogv3/repo.go
@@ -79,7 +79,7 @@ func (r *Repos) Update(ctx context.Context, project string, rawcms cms.Interface
 		r.cms[project] = cms
 	}
 
-	log.Infofc(ctx, "datacatalogv3: updating project %s", project)
+	log.Infofc(ctx, "datacatalogv3: updating repo %s", project)
 	data, err := cms.GetAll(ctx, project)
 	if err != nil {
 		return err
@@ -97,6 +97,7 @@ func (r *Repos) Update(ctx context.Context, project string, rawcms cms.Interface
 	adminRepoWrapper := r.adminRepos[project]
 	if adminRepoWrapper == nil {
 		adminRepoWrapper = plateauapi.NewRepoWrapper(adminRepo, nil)
+		adminRepoWrapper.SetName(fmt.Sprintf("%s(admin)", project))
 		r.adminRepos[project] = adminRepoWrapper
 	} else {
 		adminRepoWrapper.SetRepo(adminRepo)
@@ -105,6 +106,7 @@ func (r *Repos) Update(ctx context.Context, project string, rawcms cms.Interface
 	repoWrapper := r.repos[project]
 	if repoWrapper == nil {
 		repoWrapper = plateauapi.NewRepoWrapper(repo, nil)
+		repoWrapper.SetName(project)
 		r.repos[project] = repoWrapper
 	} else {
 		repoWrapper.SetRepo(repo)
@@ -116,7 +118,7 @@ func (r *Repos) Update(ctx context.Context, project string, rawcms cms.Interface
 		r.updatedAt[project] = time.Now()
 	}
 
-	log.Infofc(ctx, "datacatalogv3: updated project %s", project)
+	log.Infofc(ctx, "datacatalogv3: updated repo %s", project)
 	return nil
 }
 
diff --git a/server/datacatalog/plateauapi/generated.go b/server/datacatalog/plateauapi/generated.go
index 397f0eb58..fa05d2d9f 100644
--- a/server/datacatalog/plateauapi/generated.go
+++ b/server/datacatalog/plateauapi/generated.go
@@ -285,6 +285,8 @@ type PlateauDatasetResolver interface {
 	City(ctx context.Context, obj *PlateauDataset) (*City, error)
 	Ward(ctx context.Context, obj *PlateauDataset) (*Ward, error)
 	Type(ctx context.Context, obj *PlateauDataset) (*PlateauDatasetType, error)
+
+	PlateauSpecMinor(ctx context.Context, obj *PlateauDataset) (*PlateauSpecMinor, error)
 }
 type PlateauDatasetItemResolver interface {
 	Parent(ctx context.Context, obj *PlateauDatasetItem) (*PlateauDataset, error)
@@ -4847,7 +4849,7 @@ func (ec *executionContext) _PlateauDataset_plateauSpecMinor(ctx context.Context
 	}()
 	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
 		ctx = rctx // use context from middleware stack in children
-		return obj.PlateauSpecMinor, nil
+		return ec.resolvers.PlateauDataset().PlateauSpecMinor(rctx, obj)
 	})
 	if err != nil {
 		ec.Error(ctx, err)
@@ -4868,8 +4870,8 @@ func (ec *executionContext) fieldContext_PlateauDataset_plateauSpecMinor(ctx con
 	fc = &graphql.FieldContext{
 		Object:     "PlateauDataset",
 		Field:      field,
-		IsMethod:   false,
-		IsResolver: false,
+		IsMethod:   true,
+		IsResolver: true,
 		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
 			switch field.Name {
 			case "id":
@@ -12482,10 +12484,41 @@ func (ec *executionContext) _PlateauDataset(ctx context.Context, sel ast.Selecti
 				atomic.AddUint32(&out.Invalids, 1)
 			}
 		case "plateauSpecMinor":
-			out.Values[i] = ec._PlateauDataset_plateauSpecMinor(ctx, field, obj)
-			if out.Values[i] == graphql.Null {
-				atomic.AddUint32(&out.Invalids, 1)
+			field := field
+
+			innerFunc := func(ctx context.Context, fs *graphql.FieldSet) (res graphql.Marshaler) {
+				defer func() {
+					if r := recover(); r != nil {
+						ec.Error(ctx, ec.Recover(ctx, r))
+					}
+				}()
+				res = ec._PlateauDataset_plateauSpecMinor(ctx, field, obj)
+				if res == graphql.Null {
+					atomic.AddUint32(&fs.Invalids, 1)
+				}
+				return res
+			}
+
+			if field.Deferrable != nil {
+				dfs, ok := deferred[field.Deferrable.Label]
+				di := 0
+				if ok {
+					dfs.AddField(field)
+					di = len(dfs.Values) - 1
+				} else {
+					dfs = graphql.NewFieldSet([]graphql.CollectedField{field})
+					deferred[field.Deferrable.Label] = dfs
+				}
+				dfs.Concurrently(di, func(ctx context.Context) graphql.Marshaler {
+					return innerFunc(ctx, dfs)
+				})
+
+				// don't run the out.Concurrently() call below
+				out.Values[i] = graphql.Null
+				continue
 			}
+
+			out.Concurrently(i, func(ctx context.Context) graphql.Marshaler { return innerFunc(ctx, out) })
 		case "river":
 			out.Values[i] = ec._PlateauDataset_river(ctx, field, obj)
 		default:
@@ -15026,6 +15059,10 @@ func (ec *executionContext) marshalNPlateauSpec2ᚖgithubᚗcomᚋeukaryaᚑinc
 	return ec._PlateauSpec(ctx, sel, v)
 }
 
+func (ec *executionContext) marshalNPlateauSpecMinor2githubᚗcomᚋeukaryaᚑincᚋreearthᚑplateauviewᚋserverᚋdatacatalogᚋplateauapiᚐPlateauSpecMinor(ctx context.Context, sel ast.SelectionSet, v PlateauSpecMinor) graphql.Marshaler {
+	return ec._PlateauSpecMinor(ctx, sel, &v)
+}
+
 func (ec *executionContext) marshalNPlateauSpecMinor2ᚕᚖgithubᚗcomᚋeukaryaᚑincᚋreearthᚑplateauviewᚋserverᚋdatacatalogᚋplateauapiᚐPlateauSpecMinorᚄ(ctx context.Context, sel ast.SelectionSet, v []*PlateauSpecMinor) graphql.Marshaler {
 	ret := make(graphql.Array, len(v))
 	var wg sync.WaitGroup
diff --git a/server/datacatalog/plateauapi/gqlgen.yml b/server/datacatalog/plateauapi/gqlgen.yml
index cd66ff5ee..7c701e1a4 100644
--- a/server/datacatalog/plateauapi/gqlgen.yml
+++ b/server/datacatalog/plateauapi/gqlgen.yml
@@ -90,7 +90,7 @@ models:
         resolver: true
       type:
         resolver: true
-      plateauSpec:
+      plateauSpecMinor:
         resolver: true
   PlateauDatasetItem:
     fields:
diff --git a/server/datacatalog/plateauapi/inmemory.go b/server/datacatalog/plateauapi/inmemory.go
index 068720579..ed7494851 100644
--- a/server/datacatalog/plateauapi/inmemory.go
+++ b/server/datacatalog/plateauapi/inmemory.go
@@ -2,6 +2,7 @@ package plateauapi
 
 import (
 	"context"
+	"fmt"
 	"slices"
 
 	"github.com/reearth/reearthx/util"
@@ -10,6 +11,7 @@ import (
 )
 
 type InMemoryRepoContext struct {
+	Name         string
 	Areas        Areas
 	DatasetTypes DatasetTypes
 	Datasets     Datasets
@@ -34,6 +36,13 @@ func NewInMemoryRepo(ctx *InMemoryRepoContext) *InMemoryRepo {
 	return r
 }
 
+func (c *InMemoryRepo) Name() string {
+	if c.ctx == nil || c.ctx.Name == "" {
+		return "inmemory"
+	}
+	return fmt.Sprintf("inmemory(%s)", c.ctx.Name)
+}
+
 func (c *InMemoryRepo) SetContext(ctx *InMemoryRepoContext) {
 	c.ctx = ctx
 	c.areasForDataTypes = areasForDatasetTypes(ctx.Datasets.All())
diff --git a/server/datacatalog/plateauapi/inmemory_wrapper.go b/server/datacatalog/plateauapi/inmemory_wrapper.go
index ad5e8b5a3..3178f5d9b 100644
--- a/server/datacatalog/plateauapi/inmemory_wrapper.go
+++ b/server/datacatalog/plateauapi/inmemory_wrapper.go
@@ -10,6 +10,7 @@ type RepoUpdater func(ctx context.Context, repo *Repo) error
 // RepoWrapper is a thread-safe wrapper of Repo.
 type RepoWrapper struct {
 	repo    Repo
+	name    string
 	lock    sync.RWMutex
 	updater RepoUpdater
 }
@@ -36,6 +37,10 @@ func (a *RepoWrapper) SetRepo(repo Repo) {
 	a.repo = repo
 }
 
+func (a *RepoWrapper) SetName(name string) {
+	a.name = name
+}
+
 func (a *RepoWrapper) Update(ctx context.Context) error {
 	if a.updater == nil {
 		return nil
@@ -59,6 +64,16 @@ func (a *RepoWrapper) use(f func(r Repo) error) error {
 
 var _ Repo = (*RepoWrapper)(nil)
 
+func (a *RepoWrapper) Name() string {
+	if a.name != "" {
+		return a.name
+	}
+	if a.repo == nil {
+		return "wrapper"
+	}
+	return a.repo.Name()
+}
+
 func (a *RepoWrapper) Node(ctx context.Context, id ID) (res Node, err error) {
 	err = a.use(func(r Repo) (err error) {
 		res, err = r.Node(ctx, id)
diff --git a/server/datacatalog/plateauapi/merge.go b/server/datacatalog/plateauapi/merge.go
index 19a0af9b7..ad267a83f 100644
--- a/server/datacatalog/plateauapi/merge.go
+++ b/server/datacatalog/plateauapi/merge.go
@@ -2,6 +2,7 @@ package plateauapi
 
 import (
 	"context"
+	"fmt"
 	"sort"
 
 	"github.com/reearth/reearthx/util"
@@ -19,6 +20,15 @@ func NewMerger(repos ...Repo) *Merger {
 
 var _ Repo = (*Merger)(nil)
 
+func (m *Merger) Name() string {
+	return fmt.Sprintf("merger(%s)", lo.Map(m.repos, func(r Repo, _ int) string {
+		if r == nil {
+			return "nil"
+		}
+		return r.Name()
+	}))
+}
+
 func (m *Merger) Node(ctx context.Context, id ID) (Node, error) {
 	nodes, err := getRepoResults(m.repos, func(r Repo) (Node, error) {
 		return r.Node(ctx, id)
@@ -118,7 +128,11 @@ func getRepoResults[T any](repos []Repo, f func(r Repo) (T, error)) ([]T, error)
 		if r == nil {
 			return
 		}
-		return f(r)
+		res, err := f(r)
+		if err != nil {
+			return res, fmt.Errorf("repo %s: %w", r.Name(), err)
+		}
+		return res, nil
 	})
 }
 
@@ -152,6 +166,9 @@ func sortNodes[T IDNode](nodes []T) {
 }
 
 func getLatestYearNode[T any](results []T) T {
+	results = lo.Filter(results, func(a T, _ int) bool {
+		return isNodePresent(a)
+	})
 	return lo.MaxBy(results, func(a, b T) bool {
 		return getYear(a) > getYear(b)
 	})
@@ -181,6 +198,13 @@ type YearNode interface {
 	GetYear() int
 }
 
+func isNodePresent(n any) bool {
+	if n, ok := n.(Node); ok {
+		return n != nil
+	}
+	return false
+}
+
 func getYear(n any) int {
 	if yn, ok := n.(YearNode); ok {
 		return yn.GetYear()
diff --git a/server/datacatalog/plateauapi/resolver.go b/server/datacatalog/plateauapi/resolver.go
index 5b82f92dc..3fd1c420a 100644
--- a/server/datacatalog/plateauapi/resolver.go
+++ b/server/datacatalog/plateauapi/resolver.go
@@ -35,6 +35,7 @@ var ErrDatacatalogUnavailable = errors.New("datacatalog is currently unavailable
 
 type Repo interface {
 	QueryResolver
+	Name() string
 }
 
 type Resolver struct {
diff --git a/server/datacatalog/plateauapi/schema.resolvers.go b/server/datacatalog/plateauapi/schema.resolvers.go
index 42094280c..c3e0b9050 100644
--- a/server/datacatalog/plateauapi/schema.resolvers.go
+++ b/server/datacatalog/plateauapi/schema.resolvers.go
@@ -125,6 +125,11 @@ func (r *plateauDatasetResolver) Type(ctx context.Context, obj *PlateauDataset)
 	return to[*PlateauDatasetType](r.Repo.Node(ctx, obj.TypeID))
 }
 
+// PlateauSpecMinor is the resolver for the plateauSpecMinor field.
+func (r *plateauDatasetResolver) PlateauSpecMinor(ctx context.Context, obj *PlateauDataset) (*PlateauSpecMinor, error) {
+	return to[*PlateauSpecMinor](r.Repo.Node(ctx, obj.PlateauSpecMinorID))
+}
+
 // Parent is the resolver for the parent field.
 func (r *plateauDatasetItemResolver) Parent(ctx context.Context, obj *PlateauDatasetItem) (*PlateauDataset, error) {
 	return to[*PlateauDataset](r.Repo.Node(ctx, obj.ParentID))
@@ -397,16 +402,3 @@ type relatedDatasetResolver struct{ *Resolver }
 type relatedDatasetItemResolver struct{ *Resolver }
 type relatedDatasetTypeResolver struct{ *Resolver }
 type wardResolver struct{ *Resolver }
-
-// !!! WARNING !!!
-// The code below was going to be deleted when updating resolvers. It has been copied here so you have
-// one last chance to move it out of harms way if you want. There are two reasons this happens:
-//   - When renaming or deleting a resolver the old code will be put in here. You can safely delete
-//     it when you're done.
-//   - You have helper methods in this file. Move them out to keep these resolver files clean.
-func (r *plateauDatasetResolver) PlateauSpecMinor(ctx context.Context, obj *PlateauDataset) (*PlateauSpecMinor, error) {
-	return to[*PlateauSpecMinor](r.Repo.Node(ctx, obj.PlateauSpecMinorID))
-}
-func (r *plateauDatasetResolver) PlateauSpec(ctx context.Context, obj *PlateauDataset) (*PlateauSpecMinor, error) {
-	return to[*PlateauSpecMinor](r.Repo.Node(ctx, obj.PlateauSpecMinorID))
-}
diff --git a/server/datacatalog/v3.go b/server/datacatalog/v3.go
index 1c1ccf62e..5cd70a56e 100644
--- a/server/datacatalog/v3.go
+++ b/server/datacatalog/v3.go
@@ -39,19 +39,25 @@ func echov3(conf Config, g *echo.Group) (func(ctx context.Context) error, error)
 	// GraphQL playground (all)
 	plateauapig.GET("/graphql", gqlPlaygroundHandler(conf.PlaygroundEndpoint, false))
 
+	// GraphQL playground (all, admin)
+	plateauapig.GET("/admin/graphql", gqlPlaygroundHandler(conf.PlaygroundEndpoint, true))
+
 	// GraphQL playground (project)
 	plateauapig.GET("/:pid/graphql", gqlPlaygroundHandler(conf.PlaygroundEndpoint, false))
 
-	// GraphQL playground (admin)
+	// GraphQL playground (project, admin)
 	plateauapig.GET("/:pid/admin/graphql", gqlPlaygroundHandler(conf.PlaygroundEndpoint, true))
 
 	// GraphQL API (all)
 	plateauapig.POST("/graphql", h.Handler(false))
 
+	// GraphQL API (all, admin)
+	plateauapig.POST("/admin/graphql", h.Handler(true))
+
 	// GraphQL API (project)
 	plateauapig.POST("/:pid/graphql", h.Handler(false))
 
-	// GraphQL API (admin)
+	// GraphQL API (project, admin)
 	plateauapig.POST("/:pid/admin/graphql", h.Handler(true))
 
 	// warning API
@@ -209,7 +215,11 @@ func (h *reposHandler) Init(ctx context.Context) error {
 		return m.DataCatalogSchemaVersion == cmsSchemaVersion
 	})
 
-	log.Infofc(ctx, "datacatalogv3: initializing repos for %d projects", len(target))
+	targetLen := len(target)
+	if h.repov2 != nil {
+		targetLen++
+	}
+	log.Infofc(ctx, "datacatalogv3: initializing repos for %d projects", targetLen)
 
 	for _, md := range target {
 		cms, err := md.CMS()
@@ -223,6 +233,13 @@ func (h *reposHandler) Init(ctx context.Context) error {
 		}
 	}
 
+	// repov2
+	log.Infofc(ctx, "datacatalogv3: updating v2 repo")
+	if err := h.repov2.Update(ctx); err != nil {
+		log.Errorfc(ctx, "datacatalogv3: failed to update v2 repo: %w", err)
+	}
+
+	log.Infofc(ctx, "datacatalogv3: updated v2 repos")
 	return nil
 }
 
diff --git a/tools/src/args.rs b/tools/src/args.rs
index ce2a1e3c5..a644a4a2c 100644
--- a/tools/src/args.rs
+++ b/tools/src/args.rs
@@ -23,6 +23,13 @@ pub enum Commands {
         #[clap(short, long)]
         output: Option<PathBuf>,
     },
+    /// PLATEAU VIEW 1.1 のS3内に格納されたユースケースデータのファイルを移行します。
+    MigrateUC {
+        #[clap(short, long)]
+        list_path: PathBuf,
+        #[clap(short, long)]
+        output: Option<PathBuf>,
+    },
 }
 
 #[derive(Debug, Clone, ValueEnum)]
diff --git a/tools/src/main.rs b/tools/src/main.rs
index cf4ecfe76..06f9cb079 100644
--- a/tools/src/main.rs
+++ b/tools/src/main.rs
@@ -1,4 +1,5 @@
 mod args;
+mod migrateuc;
 mod prepare;
 use args::{Cli, Commands};
 
@@ -17,6 +18,9 @@ fn main() {
             output,
             format: format.into(),
         }),
+        Commands::MigrateUC { list_path, output } => {
+            migrateuc::migrateuc(migrateuc::Config { list_path, output })
+        }
     } {
         eprintln!("{}", err);
         std::process::exit(1);
diff --git a/tools/src/migrateuc.rs b/tools/src/migrateuc.rs
new file mode 100644
index 000000000..890eb6dba
--- /dev/null
+++ b/tools/src/migrateuc.rs
@@ -0,0 +1,13 @@
+use std::{fs::create_dir_all, path::PathBuf};
+
+pub struct Config {
+    pub list_path: PathBuf,
+    pub output: Option<PathBuf>,
+}
+
+pub fn migrateuc(config: Config) -> anyhow::Result<()> {
+    let output = config.output.unwrap_or_else(|| PathBuf::from("uc"));
+    create_dir_all(output)?;
+
+    todo!()
+}