diff --git a/examples/routing_retriever.yaml b/examples/routing_retriever.yaml
new file mode 100644
index 0000000..65f6882
--- /dev/null
+++ b/examples/routing_retriever.yaml
@@ -0,0 +1,14 @@
+flows:
+  foo:
+    default: true
+    retrieval:
+      retriever:
+        name: routing
+        options:
+          model:
+            openai:
+              apiKey: "${OPENAI_API_KEY}"
+              model: gpt-4o
+              apiType: OPEN_AI
+              apiBase: https://api.openai.com/v1
+          topK: 6
\ No newline at end of file
diff --git a/pkg/client/client.go b/pkg/client/client.go
index 5df6e7e..902214c 100644
--- a/pkg/client/client.go
+++ b/pkg/client/client.go
@@ -30,4 +30,5 @@ type Client interface {
 	Retrieve(ctx context.Context, datasetID string, query string, opts datastore.RetrieveOpts) ([]vectorstore.Document, error)
 	ExportDatasets(ctx context.Context, path string, datasets ...string) error
 	ImportDatasets(ctx context.Context, path string, datasets ...string) error
+	UpdateDataset(ctx context.Context, dataset index.Dataset, opts *datastore.UpdateDatasetOpts) (*index.Dataset, error)
 }
diff --git a/pkg/client/default.go b/pkg/client/default.go
index 846baf4..279d43b 100644
--- a/pkg/client/default.go
+++ b/pkg/client/default.go
@@ -228,3 +228,8 @@ func (c *DefaultClient) ImportDatasets(ctx context.Context, path string, dataset
 	// TODO: implement
 	panic("not implemented")
 }
+
+func (c *DefaultClient) UpdateDataset(ctx context.Context, dataset index.Dataset, opts *datastore.UpdateDatasetOpts) (*index.Dataset, error) {
+	// TODO: implement
+	panic("not implemented")
+}
diff --git a/pkg/client/standalone.go b/pkg/client/standalone.go
index 3661431..642bdfe 100644
--- a/pkg/client/standalone.go
+++ b/pkg/client/standalone.go
@@ -132,3 +132,7 @@ func (c *StandaloneClient) ExportDatasets(ctx context.Context, path string, data
 func (c *StandaloneClient) ImportDatasets(ctx context.Context, path string, datasets ...string) error {
 	return c.Datastore.ImportDatasetsFromFile(ctx, path, datasets...)
 }
+
+func (c *StandaloneClient) UpdateDataset(ctx context.Context, dataset index.Dataset, opts *datastore.UpdateDatasetOpts) (*index.Dataset, error) {
+	return c.Datastore.UpdateDataset(ctx, dataset, opts)
+}
diff --git a/pkg/cmd/edit_dataset.go b/pkg/cmd/edit_dataset.go
new file mode 100644
index 0000000..0ddc42b
--- /dev/null
+++ b/pkg/cmd/edit_dataset.go
@@ -0,0 +1,75 @@
+package cmd
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/gptscript-ai/knowledge/pkg/datastore"
+	"github.com/gptscript-ai/knowledge/pkg/index"
+	"github.com/spf13/cobra"
+)
+
+type ClientEditDataset struct {
+	Client
+	ResetMetadata   bool              `usage:"reset metadata to default (empty)"`
+	UpdateMetadata  map[string]string `usage:"update metadata key-value pairs (existing metadata will be updated/preserved)"`
+	ReplaceMetadata map[string]string `usage:"replace metadata with key-value pairs (existing metadata will be removed)"`
+}
+
+func (s *ClientEditDataset) Customize(cmd *cobra.Command) {
+	cmd.Use = "edit-dataset <dataset-id>"
+	cmd.Short = "Edit an existing dataset"
+	cmd.Args = cobra.ExactArgs(1)
+	cmd.MarkFlagsMutuallyExclusive("reset-metadata", "update-metadata", "replace-metadata")
+}
+
+func (s *ClientEditDataset) Run(cmd *cobra.Command, args []string) error {
+	c, err := s.getClient()
+	if err != nil {
+		return err
+	}
+
+	datasetID := args[0]
+
+	// Get current dataset
+	dataset, err := c.GetDataset(cmd.Context(), datasetID)
+	if err != nil {
+		return fmt.Errorf("failed to get dataset: %w", err)
+	}
+
+	if dataset == nil {
+		fmt.Printf("dataset not found: %q\n", datasetID)
+		return fmt.Errorf("dataset not found: %s", datasetID)
+	}
+
+	updatedDataset := index.Dataset{
+		ID: dataset.ID,
+	}
+
+	// Update Metadata - since flags are mutually exclusive, this should be either an empty map, or one of the update/replace maps
+	metadata := map[string]any{}
+
+	for k, v := range s.UpdateMetadata {
+		metadata[k] = v
+	}
+
+	for k, v := range s.ReplaceMetadata {
+		metadata[k] = v
+	}
+
+	updatedDataset.Metadata = metadata
+
+	dataset, err = c.UpdateDataset(cmd.Context(), updatedDataset, &datastore.UpdateDatasetOpts{ReplaceMedata: s.ResetMetadata || len(s.ReplaceMetadata) > 0})
+	if err != nil {
+		return fmt.Errorf("failed to update dataset: %w", err)
+	}
+
+	dataset.Files = nil // Don't print files
+
+	jsonOutput, err := json.Marshal(dataset)
+	if err != nil {
+		return fmt.Errorf("failed to marshal dataset: %w", err)
+	}
+
+	fmt.Println("Updated dataset:\n", string(jsonOutput))
+	return nil
+}
diff --git a/pkg/cmd/main.go b/pkg/cmd/main.go
index 7a4bf2e..2ed54ab 100644
--- a/pkg/cmd/main.go
+++ b/pkg/cmd/main.go
@@ -30,6 +30,7 @@ func New() *cobra.Command {
 		new(ClientAskDir),
 		new(ClientExportDatasets),
 		new(ClientImportDatasets),
+		new(ClientEditDataset),
 		new(Version),
 	)
 }
diff --git a/pkg/datastore/dataset.go b/pkg/datastore/dataset.go
index 0a09406..e3c336c 100644
--- a/pkg/datastore/dataset.go
+++ b/pkg/datastore/dataset.go
@@ -11,6 +11,10 @@ import (
 	"gorm.io/gorm"
 )
 
+type UpdateDatasetOpts struct {
+	ReplaceMedata bool
+}
+
 func (s *Datastore) NewDataset(ctx context.Context, dataset index.Dataset) error {
 	// Set defaults
 	if dataset.EmbedDimension <= 0 {
@@ -75,3 +79,44 @@ func (s *Datastore) ListDatasets(ctx context.Context) ([]index.Dataset, error) {
 
 	return datasets, nil
 }
+
+func (s *Datastore) UpdateDataset(ctx context.Context, updatedDataset index.Dataset, opts *UpdateDatasetOpts) (*index.Dataset, error) {
+	if opts == nil {
+		opts = &UpdateDatasetOpts{}
+	}
+
+	var origDS *index.Dataset
+	var err error
+
+	if updatedDataset.ID == "" {
+		return origDS, fmt.Errorf("dataset ID is required")
+	}
+
+	origDS, err = s.GetDataset(ctx, updatedDataset.ID)
+	if err != nil {
+		return origDS, err
+	}
+	if origDS == nil {
+		return origDS, fmt.Errorf("dataset not found: %s", updatedDataset.ID)
+	}
+
+	// Update Metadata
+	if opts.ReplaceMedata {
+		origDS.ReplaceMetadata(updatedDataset.Metadata)
+	} else {
+		origDS.UpdateMetadata(updatedDataset.Metadata)
+	}
+
+	// Check if there is any other non-null field in the updatedDataset
+	if updatedDataset.EmbedDimension > 0 {
+		return origDS, fmt.Errorf("embedding dimension cannot be updated")
+	}
+
+	if updatedDataset.Files != nil {
+		return origDS, fmt.Errorf("files cannot be updated")
+	}
+
+	slog.Debug("Updating dataset", "id", updatedDataset.ID, "metadata", updatedDataset.Metadata)
+
+	return origDS, s.Index.UpdateDataset(ctx, *origDS)
+}
diff --git a/pkg/datastore/retrieve.go b/pkg/datastore/retrieve.go
index 812c757..e984dbc 100644
--- a/pkg/datastore/retrieve.go
+++ b/pkg/datastore/retrieve.go
@@ -27,5 +27,9 @@ func (s *Datastore) Retrieve(ctx context.Context, datasetID string, query string
 	}
 	retrievalFlow.FillDefaults(topK)
 
-	return retrievalFlow.Run(ctx, s.Vectorstore, query, datasetID)
+	return retrievalFlow.Run(ctx, s, query, datasetID)
+}
+
+func (s *Datastore) SimilaritySearch(ctx context.Context, query string, numDocuments int, datasetID string) ([]vectorstore.Document, error) {
+	return s.Vectorstore.SimilaritySearch(ctx, query, numDocuments, datasetID)
 }
diff --git a/pkg/datastore/retrievers/retrievers.go b/pkg/datastore/retrievers/retrievers.go
index 54b9fde..2135fd9 100644
--- a/pkg/datastore/retrievers/retrievers.go
+++ b/pkg/datastore/retrievers/retrievers.go
@@ -3,6 +3,7 @@ package retrievers
 import (
 	"context"
 	"fmt"
+	"github.com/gptscript-ai/knowledge/pkg/datastore/store"
 	"log/slog"
 
 	"github.com/gptscript-ai/knowledge/pkg/datastore/defaults"
@@ -10,7 +11,7 @@ import (
 )
 
 type Retriever interface {
-	Retrieve(ctx context.Context, store vs.VectorStore, query string, datasetID string) ([]vs.Document, error)
+	Retrieve(ctx context.Context, store store.Store, query string, datasetID string) ([]vs.Document, error)
 }
 
 func GetRetriever(name string) (Retriever, error) {
@@ -19,6 +20,8 @@ func GetRetriever(name string) (Retriever, error) {
 		return &BasicRetriever{TopK: defaults.TopK}, nil
 	case "subquery":
 		return &SubqueryRetriever{Limit: 3, TopK: 3}, nil
+	case "routing":
+		return &RoutingRetriever{TopK: defaults.TopK}, nil
 	default:
 		return nil, fmt.Errorf("unknown retriever %q", name)
 	}
@@ -32,7 +35,7 @@ type BasicRetriever struct {
 	TopK int
 }
 
-func (r *BasicRetriever) Retrieve(ctx context.Context, store vs.VectorStore, query string, datasetID string) ([]vs.Document, error) {
+func (r *BasicRetriever) Retrieve(ctx context.Context, store store.Store, query string, datasetID string) ([]vs.Document, error) {
 	if r.TopK <= 0 {
 		slog.Debug("[BasicRetriever] TopK not set, using default", "default", defaults.TopK)
 		r.TopK = defaults.TopK
diff --git a/pkg/datastore/retrievers/routing.go b/pkg/datastore/retrievers/routing.go
new file mode 100644
index 0000000..bfbbfc2
--- /dev/null
+++ b/pkg/datastore/retrievers/routing.go
@@ -0,0 +1,89 @@
+package retrievers
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/gptscript-ai/knowledge/pkg/datastore/defaults"
+	"github.com/gptscript-ai/knowledge/pkg/datastore/store"
+	"github.com/gptscript-ai/knowledge/pkg/llm"
+	vs "github.com/gptscript-ai/knowledge/pkg/vectorstore"
+	"log/slog"
+)
+
+type RoutingRetriever struct {
+	Model             llm.LLMConfig
+	AvailableDatasets []string
+	TopK              int
+}
+
+var routingPromptTpl = `The following query will be used for a vector similarity search.
+Please route it to the appropriate dataset. Choose the one that fits best to the query based on the metadata.
+Query: "{{.query}}"
+Available datasets in a JSON map, where the key is the dataset ID and the value is a map of metadata fields:
+{{ .datasets }}
+Reply only in the following JSON format, without any styling or markdown syntax:
+{"result": "<dataset-id>"}`
+
+type routingResp struct {
+	Result string `json:"result"`
+}
+
+func (r *RoutingRetriever) Retrieve(ctx context.Context, store store.Store, query string, datasetID string) ([]vs.Document, error) {
+	log := slog.With("component", "RoutingRetriever")
+
+	log.Debug("Ignoring input datasetID in routing retriever, as it chooses on by itself", "query", query, "inputDataset", datasetID)
+
+	if r.TopK <= 0 {
+		log.Debug("TopK not set, using default", "default", defaults.TopK)
+		r.TopK = defaults.TopK
+	}
+
+	if len(r.AvailableDatasets) == 0 {
+		allDatasets, err := store.ListDatasets(ctx)
+		if err != nil {
+			return nil, err
+		}
+		for _, ds := range allDatasets {
+			r.AvailableDatasets = append(r.AvailableDatasets, ds.ID)
+		}
+	}
+	slog.Debug("Available datasets", "datasets", r.AvailableDatasets)
+
+	datasets := map[string]map[string]any{}
+	for _, dsID := range r.AvailableDatasets {
+		dataset, err := store.GetDataset(ctx, dsID)
+		if err != nil {
+			return nil, err
+		}
+		if dataset == nil {
+			return nil, fmt.Errorf("dataset not found: %q", dsID)
+		}
+		datasets[dataset.ID] = dataset.Metadata
+	}
+
+	datasetsJSON, err := json.Marshal(datasets)
+	if err != nil {
+		return nil, err
+	}
+
+	m, err := llm.NewFromConfig(r.Model)
+	if err != nil {
+		return nil, err
+	}
+
+	result, err := m.Prompt(context.Background(), routingPromptTpl, map[string]interface{}{"query": query, "datasets": string(datasetsJSON)})
+	if err != nil {
+		return nil, err
+	}
+	slog.Debug("Routing result", "result", result)
+	var resp routingResp
+	err = json.Unmarshal([]byte(result), &resp)
+	if err != nil {
+		return nil, err
+	}
+
+	slog.Debug("Routing query to dataset", "query", query, "dataset", resp.Result)
+
+	return store.SimilaritySearch(ctx, query, r.TopK, resp.Result)
+}
diff --git a/pkg/datastore/retrievers/subquery.go b/pkg/datastore/retrievers/subquery.go
index e83b961..9da7ddf 100644
--- a/pkg/datastore/retrievers/subquery.go
+++ b/pkg/datastore/retrievers/subquery.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"github.com/gptscript-ai/knowledge/pkg/datastore/store"
 	"github.com/gptscript-ai/knowledge/pkg/llm"
 	vs "github.com/gptscript-ai/knowledge/pkg/vectorstore"
 	"log/slog"
@@ -30,7 +31,7 @@ type subqueryResp struct {
 	Results []string `json:"results"`
 }
 
-func (s SubqueryRetriever) Retrieve(ctx context.Context, store vs.VectorStore, query string, datasetID string) ([]vs.Document, error) {
+func (s SubqueryRetriever) Retrieve(ctx context.Context, store store.Store, query string, datasetID string) ([]vs.Document, error) {
 	m, err := llm.NewFromConfig(s.Model)
 	if err != nil {
 		return nil, err
diff --git a/pkg/datastore/store/store.go b/pkg/datastore/store/store.go
new file mode 100644
index 0000000..71ef58c
--- /dev/null
+++ b/pkg/datastore/store/store.go
@@ -0,0 +1,13 @@
+package store
+
+import (
+	"context"
+	"github.com/gptscript-ai/knowledge/pkg/index"
+	vs "github.com/gptscript-ai/knowledge/pkg/vectorstore"
+)
+
+type Store interface {
+	ListDatasets(ctx context.Context) ([]index.Dataset, error)
+	GetDataset(ctx context.Context, datasetID string) (*index.Dataset, error)
+	SimilaritySearch(ctx context.Context, query string, numDocuments int, collection string) ([]vs.Document, error)
+}
diff --git a/pkg/flows/flows.go b/pkg/flows/flows.go
index e06fcdd..b8d07b9 100644
--- a/pkg/flows/flows.go
+++ b/pkg/flows/flows.go
@@ -3,6 +3,7 @@ package flows
 import (
 	"context"
 	"fmt"
+	"github.com/gptscript-ai/knowledge/pkg/datastore/store"
 	"io"
 	"log/slog"
 	"slices"
@@ -113,7 +114,7 @@ func (f *RetrievalFlow) FillDefaults(topK int) {
 	}
 }
 
-func (f *RetrievalFlow) Run(ctx context.Context, store vs.VectorStore, query string, datasetID string) ([]vs.Document, error) {
+func (f *RetrievalFlow) Run(ctx context.Context, store store.Store, query string, datasetID string) ([]vs.Document, error) {
 	var err error
 	originalQuery := query
 
diff --git a/pkg/index/datasets.go b/pkg/index/datasets.go
index cf2b16d..a4b58e6 100644
--- a/pkg/index/datasets.go
+++ b/pkg/index/datasets.go
@@ -87,3 +87,16 @@ func (db *DB) ImportDatasetsFromFile(ctx context.Context, path string) error {
 
 	return nil
 }
+
+func (db *DB) UpdateDataset(ctx context.Context, dataset Dataset) error {
+	gdb := db.gormDB.WithContext(ctx)
+
+	slog.Debug("Updating dataset in DB", "id", dataset.ID, "metadata", dataset.Metadata)
+	err := gdb.Save(dataset).Error
+	if err != nil {
+		return err
+	}
+
+	gdb.Commit()
+	return nil
+}
diff --git a/pkg/index/metadata.go b/pkg/index/metadata.go
new file mode 100644
index 0000000..84e130c
--- /dev/null
+++ b/pkg/index/metadata.go
@@ -0,0 +1,40 @@
+package index
+
+import (
+	"fmt"
+	"slices"
+)
+
+// SetMetadataField sets a metadata field in the dataset. If the metadata does not exist, it will be created.
+// If the metadata field already exists, it will be overwritten.
+func (d *Dataset) SetMetadataField(key string, value interface{}) {
+	if d.Metadata == nil {
+		d.Metadata = make(map[string]interface{})
+	}
+	d.Metadata[key] = value
+	d.cleanMetadata()
+}
+
+// ReplaceMetadata replaces the metadata of the dataset with the given metadata.
+func (d *Dataset) ReplaceMetadata(metadata map[string]interface{}) {
+	d.Metadata = metadata
+	d.cleanMetadata()
+}
+
+// UpdateMetadata updates the metadata of the dataset with the given metadata.
+// If a metadata field already exists, it will be overwritten. If a metadata field does not exist, it will be created.
+// Existing metadata fields that are not present in the given metadata will remain unchanged.
+func (d *Dataset) UpdateMetadata(metadata map[string]interface{}) {
+	for k, v := range metadata {
+		d.SetMetadataField(k, v)
+	}
+	d.cleanMetadata()
+}
+
+func (d *Dataset) cleanMetadata() {
+	for k, v := range d.Metadata {
+		if v == nil || slices.Contains([]string{"", "-", "null", "nil"}, fmt.Sprintf("%v", v)) {
+			delete(d.Metadata, k)
+		}
+	}
+}
diff --git a/pkg/index/models.go b/pkg/index/models.go
index 4e21d00..297cde0 100644
--- a/pkg/index/models.go
+++ b/pkg/index/models.go
@@ -7,9 +7,10 @@ import (
 // Dataset refers to a VectorDB data space.
 // @Description Dataset refers to a VectorDB data space.
 type Dataset struct {
-	ID             string `gorm:"primaryKey" json:"id"`
-	EmbedDimension int    `json:"embed_dim,omitempty"`
-	Files          []File `gorm:"foreignKey:Dataset;references:ID;constraint:OnDelete:CASCADE;"`
+	ID             string         `gorm:"primaryKey" json:"id"`
+	EmbedDimension int            `json:"embed_dim,omitempty"`
+	Files          []File         `gorm:"foreignKey:Dataset;references:ID;constraint:OnDelete:CASCADE;"`
+	Metadata       map[string]any `json:"metadata,omitempty" gorm:"serializer:json"`
 }
 
 type File struct {