diff --git a/datafactory_events.go b/datafactory_events.go
new file mode 100644
index 0000000..1b26d80
--- /dev/null
+++ b/datafactory_events.go
@@ -0,0 +1,387 @@
+package main
+
+// WebSocket event hub for data_factory.db `runs` table (issue 0097).
+//
+// Mirrors CallMonitorHub in events.go but watches `runs` of data_factory.db.
+// Lazy: ticker only runs while >=1 subscriber is connected.
+// Snapshot at connect = last 50 runs + active nodes + watermark.
+// Delta every wsTickInterval = rows with rowid > watermark.
+//
+// Reuses subscriber/wsMessage/clientCmd from events.go — those types are
+// generic enough for any append-only event stream.
+
+import (
+	"context"
+	"database/sql"
+	"log"
+	"net/http"
+	"sync"
+	"time"
+
+	"nhooyr.io/websocket"
+	"nhooyr.io/websocket/wsjson"
+)
+
+const dfSnapshotLimit = 50
+
+// dfNode is the JSON shape served by the snapshot's `nodes` field.
+type dfNode struct {
+	ID          string `json:"id"`
+	Kind        string `json:"kind"`
+	Name        string `json:"name"`
+	FunctionID  string `json:"function_id"`
+	Description string `json:"description"`
+	Enabled     bool   `json:"enabled"`
+	TagsCSV     string `json:"tags_csv"`
+}
+
+// dfRun is the JSON contract for snapshot.runs and delta.runs.
+type dfRun struct {
+	Rowid      int64  `json:"rowid"`
+	ID         string `json:"id"`
+	NodeID     string `json:"node_id"`
+	StartedAt  string `json:"started_at"`
+	FinishedAt string `json:"finished_at"`
+	Status     string `json:"status"`
+	RowsIn     int64  `json:"rows_in"`
+	RowsOut    int64  `json:"rows_out"`
+	KbIn       int64  `json:"kb_in"`
+	KbOut      int64  `json:"kb_out"`
+	DurationMS int64  `json:"duration_ms"`
+	Trigger    string `json:"trigger"`
+	Error      string `json:"error"`
+}
+
+// dfMessage is what travels on the WS. Distinct from wsMessage to avoid
+// schema collision with call_monitor's KPIs/rows.
+type dfMessage struct {
+	Type       string   `json:"type"` // "snapshot" | "delta" | "ping"
+	Watermark  int64    `json:"watermark,omitempty"`
+	Nodes      []dfNode `json:"nodes,omitempty"`
+	Runs       []dfRun  `json:"runs,omitempty"`
+	ServerTime int64    `json:"server_time"`
+}
+
+type dfSubscriber struct {
+	conn      *websocket.Conn
+	ctx       context.Context
+	cancel    context.CancelFunc
+	out       chan dfMessage
+	watermark int64
+}
+
+// DataFactoryHub gestiona broadcast WS sobre `runs` table de data_factory.db.
+//
+// Holds a direct *sql.DB pointer (lazy-opened RW by Server). NOT pulled from
+// DBPool because data_factory.db is opened by datafactory.Open(), not by the
+// pool's read-only discovery flow.
+type DataFactoryHub struct {
+	getDB func() (*sql.DB, error)
+
+	mu          sync.Mutex
+	subscribers map[*dfSubscriber]struct{}
+	tickerStop  chan struct{}
+	tickerOn    bool
+	watermark   int64
+	lastEventAt time.Time
+}
+
+func NewDataFactoryHub(getDB func() (*sql.DB, error)) *DataFactoryHub {
+	return &DataFactoryHub{
+		getDB:       getDB,
+		subscribers: make(map[*dfSubscriber]struct{}),
+	}
+}
+
+func (h *DataFactoryHub) register(s *dfSubscriber) {
+	h.mu.Lock()
+	h.subscribers[s] = struct{}{}
+	shouldStart := !h.tickerOn
+	if shouldStart {
+		h.tickerStop = make(chan struct{})
+		h.tickerOn = true
+		h.lastEventAt = time.Now()
+	}
+	h.mu.Unlock()
+
+	if shouldStart {
+		go h.tickerLoop()
+	}
+}
+
+func (h *DataFactoryHub) unregister(s *dfSubscriber) {
+	h.mu.Lock()
+	if _, ok := h.subscribers[s]; !ok {
+		h.mu.Unlock()
+		return
+	}
+	delete(h.subscribers, s)
+	close(s.out)
+	shouldStop := h.tickerOn && len(h.subscribers) == 0
+	if shouldStop {
+		close(h.tickerStop)
+		h.tickerOn = false
+	}
+	h.mu.Unlock()
+}
+
+func (h *DataFactoryHub) tickerLoop() {
+	interval := wsTickInterval
+	t := time.NewTimer(interval)
+	defer t.Stop()
+	for {
+		select {
+		case <-h.tickerStop:
+			return
+		case <-t.C:
+			rows, max, err := h.fetchSince(h.getWatermark())
+			if err != nil {
+				log.Printf("[ws-df] fetchSince: %v", err)
+			} else if len(rows) > 0 {
+				h.setWatermark(max)
+				h.recordActivity()
+				h.broadcast(dfMessage{
+					Type:       "delta",
+					Watermark:  max,
+					Runs:       rows,
+					ServerTime: time.Now().Unix(),
+				})
+			}
+			if time.Since(h.lastActivityAt()) > wsIdleThreshold {
+				interval = wsTickIntervalIdle
+			} else {
+				interval = wsTickInterval
+			}
+			t.Reset(interval)
+		}
+	}
+}
+
+func (h *DataFactoryHub) getWatermark() int64 {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	return h.watermark
+}
+
+func (h *DataFactoryHub) setWatermark(v int64) {
+	h.mu.Lock()
+	if v > h.watermark {
+		h.watermark = v
+	}
+	h.mu.Unlock()
+}
+
+func (h *DataFactoryHub) recordActivity() {
+	h.mu.Lock()
+	h.lastEventAt = time.Now()
+	h.mu.Unlock()
+}
+
+func (h *DataFactoryHub) lastActivityAt() time.Time {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	return h.lastEventAt
+}
+
+func (h *DataFactoryHub) fetchSince(since int64) ([]dfRun, int64, error) {
+	db, err := h.getDB()
+	if err != nil {
+		return nil, since, err
+	}
+	rows, err := db.Query(`
+		SELECT rowid, id, node_id, started_at, COALESCE(finished_at,''), status,
+		       rows_in, rows_out, kb_in, kb_out, duration_ms, trigger, error
+		FROM runs
+		WHERE rowid > ?
+		ORDER BY rowid ASC
+		LIMIT 500`, since)
+	if err != nil {
+		return nil, since, err
+	}
+	defer rows.Close()
+
+	out := make([]dfRun, 0, 16)
+	max := since
+	for rows.Next() {
+		var r dfRun
+		if err := rows.Scan(&r.Rowid, &r.ID, &r.NodeID, &r.StartedAt, &r.FinishedAt,
+			&r.Status, &r.RowsIn, &r.RowsOut, &r.KbIn, &r.KbOut,
+			&r.DurationMS, &r.Trigger, &r.Error); err != nil {
+			return nil, since, err
+		}
+		out = append(out, r)
+		if r.Rowid > max {
+			max = r.Rowid
+		}
+	}
+	return out, max, rows.Err()
+}
+
+func (h *DataFactoryHub) fetchSnapshot() ([]dfNode, []dfRun, int64, error) {
+	db, err := h.getDB()
+	if err != nil {
+		return nil, nil, 0, err
+	}
+
+	// Active nodes (enabled=1).
+	nodeRows, err := db.Query(`
+		SELECT id, kind, name, function_id, description, enabled, tags_csv
+		FROM nodes
+		WHERE enabled = 1
+		ORDER BY kind, name`)
+	if err != nil {
+		return nil, nil, 0, err
+	}
+	defer nodeRows.Close()
+
+	nodes := make([]dfNode, 0, 16)
+	for nodeRows.Next() {
+		var n dfNode
+		var enabled int
+		if err := nodeRows.Scan(&n.ID, &n.Kind, &n.Name, &n.FunctionID,
+			&n.Description, &enabled, &n.TagsCSV); err != nil {
+			return nil, nil, 0, err
+		}
+		n.Enabled = enabled != 0
+		nodes = append(nodes, n)
+	}
+	if err := nodeRows.Err(); err != nil {
+		return nil, nil, 0, err
+	}
+
+	// Last 50 runs (newest first).
+	runRows, err := db.Query(`
+		SELECT rowid, id, node_id, started_at, COALESCE(finished_at,''), status,
+		       rows_in, rows_out, kb_in, kb_out, duration_ms, trigger, error
+		FROM runs
+		ORDER BY rowid DESC
+		LIMIT ?`, dfSnapshotLimit)
+	if err != nil {
+		return nodes, nil, 0, err
+	}
+	defer runRows.Close()
+
+	runs := make([]dfRun, 0, dfSnapshotLimit)
+	max := int64(0)
+	for runRows.Next() {
+		var r dfRun
+		if err := runRows.Scan(&r.Rowid, &r.ID, &r.NodeID, &r.StartedAt, &r.FinishedAt,
+			&r.Status, &r.RowsIn, &r.RowsOut, &r.KbIn, &r.KbOut,
+			&r.DurationMS, &r.Trigger, &r.Error); err != nil {
+			return nodes, nil, 0, err
+		}
+		runs = append(runs, r)
+		if r.Rowid > max {
+			max = r.Rowid
+		}
+	}
+	return nodes, runs, max, runRows.Err()
+}
+
+func (h *DataFactoryHub) broadcast(msg dfMessage) {
+	h.mu.Lock()
+	subs := make([]*dfSubscriber, 0, len(h.subscribers))
+	for s := range h.subscribers {
+		subs = append(subs, s)
+	}
+	h.mu.Unlock()
+
+	for _, s := range subs {
+		select {
+		case s.out <- msg:
+		default:
+			log.Printf("[ws-df] dropping frame for slow subscriber")
+		}
+	}
+}
+
+// handleDataFactoryEvents upgradea HTTP a WS y mantiene la conexion.
+// Endpoint: GET /api/ws/datafactory
+func (s *Server) handleDataFactoryEvents(hub *DataFactoryHub) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		conn, err := websocket.Accept(w, r, &websocket.AcceptOptions{
+			InsecureSkipVerify: true,
+		})
+		if err != nil {
+			log.Printf("[ws-df] accept: %v", err)
+			return
+		}
+		defer conn.Close(websocket.StatusInternalError, "closing")
+
+		ctx, cancel := context.WithCancel(r.Context())
+		defer cancel()
+
+		sub := &dfSubscriber{
+			conn:   conn,
+			ctx:    ctx,
+			cancel: cancel,
+			out:    make(chan dfMessage, 64),
+		}
+		hub.register(sub)
+		defer hub.unregister(sub)
+
+		nodes, runs, watermark, err := hub.fetchSnapshot()
+		if err != nil {
+			log.Printf("[ws-df] snapshot: %v", err)
+			conn.Close(websocket.StatusInternalError, "snapshot failed")
+			return
+		}
+		hub.setWatermark(watermark)
+		if err := wsjson.Write(ctx, conn, dfMessage{
+			Type:       "snapshot",
+			Watermark:  watermark,
+			Nodes:      nodes,
+			Runs:       runs,
+			ServerTime: time.Now().Unix(),
+		}); err != nil {
+			return
+		}
+
+		readErr := make(chan error, 1)
+		go func() {
+			for {
+				var cmd clientCmd
+				if err := wsjson.Read(ctx, conn, &cmd); err != nil {
+					readErr <- err
+					return
+				}
+				if cmd.Watermark > 0 {
+					rows, max, err := hub.fetchSince(cmd.Watermark)
+					if err == nil && len(rows) > 0 {
+						hub.setWatermark(max)
+						select {
+						case sub.out <- dfMessage{
+							Type:       "delta",
+							Watermark:  max,
+							Runs:       rows,
+							ServerTime: time.Now().Unix(),
+						}:
+						default:
+						}
+					}
+				}
+			}
+		}()
+
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case err := <-readErr:
+				if err != nil {
+					return
+				}
+			case msg, ok := <-sub.out:
+				if !ok {
+					return
+				}
+				wctx, wcancel := context.WithTimeout(ctx, wsBroadcastTimeout)
+				err := wsjson.Write(wctx, conn, msg)
+				wcancel()
+				if err != nil {
+					return
+				}
+			}
+		}
+	}
+}
diff --git a/handlers.go b/handlers.go
index 1572e7d..4a22b1f 100644
--- a/handlers.go
+++ b/handlers.go
@@ -2,12 +2,15 @@ package main
 
 import (
 	"context"
+	"database/sql"
 	"encoding/json"
 	"fmt"
 	"net/http"
 	"strings"
+	"sync"
 	"time"
 
+	"fn-registry/apps/data_factory/datafactory"
 	"fn-registry/functions/infra"
 )
 
@@ -18,14 +21,48 @@ type Server struct {
 	pool         *DBPool
 	registryRoot string // raiz del fn_registry (para exec fn ...)
 	hub          *CallMonitorHub
+	dfHub        *DataFactoryHub
+
+	// data_factory.db (RW) is opened lazily on first request and reused.
+	dfPath          string
+	dfMigrationsDir string
+	dfMu            sync.Mutex
+	dfDB            *sql.DB
+	dfErr           error // sticky if a previous open failed
 }
 
-func NewServer(pool *DBPool, registryRoot string) *Server {
-	return &Server{
-		pool:         pool,
-		registryRoot: registryRoot,
-		hub:          NewCallMonitorHub(pool),
+func NewServer(pool *DBPool, registryRoot, dfPath, dfMigrationsDir string) *Server {
+	s := &Server{
+		pool:            pool,
+		registryRoot:    registryRoot,
+		hub:             NewCallMonitorHub(pool),
+		dfPath:          dfPath,
+		dfMigrationsDir: dfMigrationsDir,
 	}
+	s.dfHub = NewDataFactoryHub(s.dataFactoryDB)
+	return s
+}
+
+// dataFactoryDB returns a RW connection to data_factory.db, lazy-opened on
+// first call. Subsequent calls return the cached connection. If the open
+// fails it is cached as a sticky error to avoid retry storms; retry after
+// process restart.
+func (s *Server) dataFactoryDB() (*sql.DB, error) {
+	s.dfMu.Lock()
+	defer s.dfMu.Unlock()
+	if s.dfDB != nil {
+		return s.dfDB, nil
+	}
+	if s.dfErr != nil {
+		return nil, s.dfErr
+	}
+	db, err := datafactory.Open(s.dfPath, s.dfMigrationsDir)
+	if err != nil {
+		s.dfErr = err
+		return nil, err
+	}
+	s.dfDB = db
+	return db, nil
 }
 
 // Routes registers all API routes on the given mux.
@@ -50,6 +87,13 @@ func (s *Server) Routes(mux *http.ServeMux) {
 	// Issue 0086: WebSocket live stream de ops:call_monitor (calls table).
 	// Hub global con ticker bajo demanda (solo corre con >=1 subscriber).
 	mux.HandleFunc("GET /api/events/call_monitor", s.handleEvents(s.hub))
+
+	// Issue 0097: data_factory.db (nodes, runs, databases).
+	// REST read-only + WS live stream sobre `runs`.
+	mux.HandleFunc("GET /api/datafactory/nodes", s.handleDataFactoryNodes)
+	mux.HandleFunc("GET /api/datafactory/runs", s.handleDataFactoryRuns)
+	mux.HandleFunc("GET /api/datafactory/databases", s.handleDataFactoryDatabases)
+	mux.HandleFunc("GET /api/ws/datafactory", s.handleDataFactoryEvents(s.dfHub))
 }
 
 func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
@@ -62,9 +106,14 @@ func (s *Server) handleDatabases(w http.ResponseWriter, r *http.Request) {
 		Alias string `json:"alias"`
 		Kind  string `json:"kind"`
 	}
-	out := make([]dbInfo, len(entries))
-	for i, e := range entries {
-		out[i] = dbInfo{Alias: e.Alias, Kind: e.Kind}
+	out := make([]dbInfo, 0, len(entries)+1)
+	for _, e := range entries {
+		out = append(out, dbInfo{Alias: e.Alias, Kind: e.Kind})
+	}
+	// Surface data_factory.db too. It is opened RW outside the pool but
+	// belongs in the discovery list so dashboards can see it.
+	if s.dfPath != "" {
+		out = append(out, dbInfo{Alias: "data_factory", Kind: "data_factory"})
 	}
 	writeJSON(w, http.StatusOK, out)
 }
diff --git a/handlers_datafactory.go b/handlers_datafactory.go
new file mode 100644
index 0000000..3d31719
--- /dev/null
+++ b/handlers_datafactory.go
@@ -0,0 +1,205 @@
+package main
+
+// REST handlers (read-only) for data_factory.db (issue 0097).
+//
+// Endpoints:
+//   GET /api/datafactory/nodes?kind=<kind>
+//   GET /api/datafactory/runs?node_id=<id>&limit=N
+//   GET /api/datafactory/databases
+//
+// All endpoints lazy-open data_factory.db on first request (creating the
+// file + applying migrations if missing). If the open fails, returns 503.
+// POST trigger is intentionally NOT implemented — sqlite_api is read-only;
+// run insertion is done out-of-band by DAG steps / function wrappers.
+
+import (
+	"context"
+	"database/sql"
+	"net/http"
+	"strconv"
+)
+
+// dataFactoryNode is the JSON row for /api/datafactory/nodes.
+type dataFactoryNode struct {
+	ID           string `json:"id"`
+	Kind         string `json:"kind"`
+	Name         string `json:"name"`
+	FunctionID   string `json:"function_id"`
+	Description  string `json:"description"`
+	ConfigJSON   string `json:"config_json"`
+	ScheduleCron string `json:"schedule_cron"`
+	Enabled      bool   `json:"enabled"`
+	TagsCSV      string `json:"tags_csv"`
+	CreatedAt    string `json:"created_at"`
+	UpdatedAt    string `json:"updated_at"`
+}
+
+// dataFactoryRun is the JSON row for /api/datafactory/runs.
+type dataFactoryRun struct {
+	ID         string `json:"id"`
+	NodeID     string `json:"node_id"`
+	StartedAt  string `json:"started_at"`
+	FinishedAt string `json:"finished_at"`
+	Status     string `json:"status"`
+	RowsIn     int64  `json:"rows_in"`
+	RowsOut    int64  `json:"rows_out"`
+	KbIn       int64  `json:"kb_in"`
+	KbOut      int64  `json:"kb_out"`
+	DurationMS int64  `json:"duration_ms"`
+	Trigger    string `json:"trigger"`
+	Error      string `json:"error"`
+	Notes      string `json:"notes"`
+}
+
+// dataFactoryDatabase is the JSON row for /api/datafactory/databases.
+type dataFactoryDatabase struct {
+	ID          string `json:"id"`
+	Kind        string `json:"kind"`
+	Label       string `json:"label"`
+	URI         string `json:"uri"`
+	Description string `json:"description"`
+	TagsCSV     string `json:"tags_csv"`
+	LastSeenAt  string `json:"last_seen_at"`
+	TableCount  int64  `json:"table_count"`
+	SizeBytes   int64  `json:"size_bytes"`
+	CreatedAt   string `json:"created_at"`
+	UpdatedAt   string `json:"updated_at"`
+}
+
+func (s *Server) handleDataFactoryNodes(w http.ResponseWriter, r *http.Request) {
+	db, err := s.dataFactoryDB()
+	if err != nil {
+		writeError(w, http.StatusServiceUnavailable, "data_factory.db unavailable: "+err.Error())
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(r.Context(), queryTimeout)
+	defer cancel()
+
+	kind := r.URL.Query().Get("kind")
+	var rows *sql.Rows
+	if kind != "" {
+		rows, err = db.QueryContext(ctx, `
+			SELECT id, kind, name, function_id, description, config_json,
+			       schedule_cron, enabled, tags_csv, created_at, updated_at
+			FROM nodes
+			WHERE kind = ?
+			ORDER BY kind, name`, kind)
+	} else {
+		rows, err = db.QueryContext(ctx, `
+			SELECT id, kind, name, function_id, description, config_json,
+			       schedule_cron, enabled, tags_csv, created_at, updated_at
+			FROM nodes
+			ORDER BY kind, name`)
+	}
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+
+	nodes := make([]dataFactoryNode, 0, 16)
+	for rows.Next() {
+		var n dataFactoryNode
+		var enabled int
+		if err := rows.Scan(&n.ID, &n.Kind, &n.Name, &n.FunctionID, &n.Description,
+			&n.ConfigJSON, &n.ScheduleCron, &enabled, &n.TagsCSV,
+			&n.CreatedAt, &n.UpdatedAt); err != nil {
+			writeError(w, http.StatusInternalServerError, err.Error())
+			return
+		}
+		n.Enabled = enabled != 0
+		nodes = append(nodes, n)
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"nodes": nodes, "count": len(nodes)})
+}
+
+func (s *Server) handleDataFactoryRuns(w http.ResponseWriter, r *http.Request) {
+	db, err := s.dataFactoryDB()
+	if err != nil {
+		writeError(w, http.StatusServiceUnavailable, "data_factory.db unavailable: "+err.Error())
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(r.Context(), queryTimeout)
+	defer cancel()
+
+	nodeID := r.URL.Query().Get("node_id")
+	limit := 100
+	if l := r.URL.Query().Get("limit"); l != "" {
+		if n, err := strconv.Atoi(l); err == nil && n > 0 && n <= 1000 {
+			limit = n
+		}
+	}
+
+	var rows *sql.Rows
+	if nodeID != "" {
+		rows, err = db.QueryContext(ctx, `
+			SELECT id, node_id, started_at, COALESCE(finished_at,''), status,
+			       rows_in, rows_out, kb_in, kb_out, duration_ms, trigger, error, notes
+			FROM runs
+			WHERE node_id = ?
+			ORDER BY started_at DESC
+			LIMIT ?`, nodeID, limit)
+	} else {
+		rows, err = db.QueryContext(ctx, `
+			SELECT id, node_id, started_at, COALESCE(finished_at,''), status,
+			       rows_in, rows_out, kb_in, kb_out, duration_ms, trigger, error, notes
+			FROM runs
+			ORDER BY started_at DESC
+			LIMIT ?`, limit)
+	}
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+
+	runs := make([]dataFactoryRun, 0, 16)
+	for rows.Next() {
+		var rr dataFactoryRun
+		if err := rows.Scan(&rr.ID, &rr.NodeID, &rr.StartedAt, &rr.FinishedAt,
+			&rr.Status, &rr.RowsIn, &rr.RowsOut, &rr.KbIn, &rr.KbOut,
+			&rr.DurationMS, &rr.Trigger, &rr.Error, &rr.Notes); err != nil {
+			writeError(w, http.StatusInternalServerError, err.Error())
+			return
+		}
+		runs = append(runs, rr)
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"runs": runs, "count": len(runs)})
+}
+
+func (s *Server) handleDataFactoryDatabases(w http.ResponseWriter, r *http.Request) {
+	db, err := s.dataFactoryDB()
+	if err != nil {
+		writeError(w, http.StatusServiceUnavailable, "data_factory.db unavailable: "+err.Error())
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(r.Context(), queryTimeout)
+	defer cancel()
+
+	rows, err := db.QueryContext(ctx, `
+		SELECT id, kind, label, uri, description, tags_csv, last_seen_at,
+		       table_count, size_bytes, created_at, updated_at
+		FROM databases
+		ORDER BY kind, label`)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer rows.Close()
+
+	out := make([]dataFactoryDatabase, 0, 16)
+	for rows.Next() {
+		var d dataFactoryDatabase
+		if err := rows.Scan(&d.ID, &d.Kind, &d.Label, &d.URI, &d.Description,
+			&d.TagsCSV, &d.LastSeenAt, &d.TableCount, &d.SizeBytes,
+			&d.CreatedAt, &d.UpdatedAt); err != nil {
+			writeError(w, http.StatusInternalServerError, err.Error())
+			return
+		}
+		out = append(out, d)
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"databases": out, "count": len(out)})
+}
diff --git a/handlers_test.go b/handlers_test.go
index a9a1882..ee1b563 100644
--- a/handlers_test.go
+++ b/handlers_test.go
@@ -45,7 +45,7 @@ func setupTestDB(t *testing.T) (*DBPool, string) {
 
 func TestHealthEndpoint(t *testing.T) {
 	pool := NewDBPool()
-	srv := NewServer(pool, "")
+	srv := NewServer(pool, "", "", "")
 	mux := http.NewServeMux()
 	srv.Routes(mux)
 
@@ -68,7 +68,7 @@ func TestDatabasesEndpoint(t *testing.T) {
 	pool.Register(DBEntry{Alias: "registry", Path: "/fake/path", Kind: "registry"})
 	pool.Register(DBEntry{Alias: "ops:myapp", Path: "/fake/path2", Kind: "operations"})
 
-	srv := NewServer(pool, "")
+	srv := NewServer(pool, "", "", "")
 	mux := http.NewServeMux()
 	srv.Routes(mux)
 
@@ -90,7 +90,7 @@ func TestQueryEndpoint(t *testing.T) {
 	pool, _ := setupTestDB(t)
 	defer pool.Close()
 
-	srv := NewServer(pool, "")
+	srv := NewServer(pool, "", "", "")
 	mux := http.NewServeMux()
 	srv.Routes(mux)
 
@@ -119,7 +119,7 @@ func TestQueryRejectsWrite(t *testing.T) {
 	pool, _ := setupTestDB(t)
 	defer pool.Close()
 
-	srv := NewServer(pool, "")
+	srv := NewServer(pool, "", "", "")
 	mux := http.NewServeMux()
 	srv.Routes(mux)
 
@@ -146,7 +146,7 @@ func TestTablesEndpoint(t *testing.T) {
 	pool, _ := setupTestDB(t)
 	defer pool.Close()
 
-	srv := NewServer(pool, "")
+	srv := NewServer(pool, "", "", "")
 	mux := http.NewServeMux()
 	srv.Routes(mux)
 
@@ -178,7 +178,7 @@ func TestSchemaEndpoint(t *testing.T) {
 	pool, _ := setupTestDB(t)
 	defer pool.Close()
 
-	srv := NewServer(pool, "")
+	srv := NewServer(pool, "", "", "")
 	mux := http.NewServeMux()
 	srv.Routes(mux)
 
@@ -200,7 +200,7 @@ func TestSchemaEndpoint(t *testing.T) {
 
 func TestNotFoundDB(t *testing.T) {
 	pool := NewDBPool()
-	srv := NewServer(pool, "")
+	srv := NewServer(pool, "", "", "")
 	mux := http.NewServeMux()
 	srv.Routes(mux)
 
diff --git a/main.go b/main.go
index e5ad5a6..797ca31 100644
--- a/main.go
+++ b/main.go
@@ -11,6 +11,7 @@ import (
 
 func main() {
 	bind := flag.String("bind", "127.0.0.1:8484", "address to bind")
+	dataFactoryDB := flag.String("data-factory-db", "", "path to data_factory.db (default: <root>/apps/data_factory/data_factory.db)")
 	flag.Parse()
 
 	root := findRegistryRoot()
@@ -24,7 +25,14 @@ func main() {
 		log.Printf("registered database: %s (%s)", entry.Alias, entry.Path)
 	}
 
-	srv := NewServer(pool, root)
+	dfPath := *dataFactoryDB
+	if dfPath == "" {
+		dfPath = filepath.Join(root, "apps", "data_factory", "data_factory.db")
+	}
+	dfMigrations := filepath.Join(root, "apps", "data_factory", "migrations")
+	log.Printf("data_factory db: %s (migrations: %s)", dfPath, dfMigrations)
+
+	srv := NewServer(pool, root, dfPath, dfMigrations)
 	mux := http.NewServeMux()
 	srv.Routes(mux)