diff --git a/collector/http.go b/collector/http.go
index 8ee2d18..84013c1 100644
--- a/collector/http.go
+++ b/collector/http.go
@@ -14,7 +14,26 @@ import (
 func (c *Collector) StartHttpServer(apiHost string, apiPort int) {
 	e := echo.New()
 
-	e.GET("/sync/atx/ts/:ts", func(ctx echo.Context) error {
+	e.GET("/sync/atx/:id", func(ctx echo.Context) error {
+		id := ctx.Param("id")
+
+		log.Info("http syncing atx %s", id)
+		go func() {
+			atx, err := c.dbClient.GetAtxById(c.db, id)
+			if err != nil {
+				log.Warning("syncing atx %s failed with error %d", id, err)
+				return
+			}
+			if atx != nil {
+				c.listener.OnActivation(atx)
+				c.listener.RecalculateEpochStats()
+			}
+		}()
+
+		return ctx.NoContent(http.StatusOK)
+	})
+
+	e.GET("/sync/atxs/ts/:ts", func(ctx echo.Context) error {
 		ts := ctx.Param("ts")
 		timestamp, err := strconv.ParseInt(ts, 10, 64)
 		if err != nil {
@@ -37,7 +56,7 @@ func (c *Collector) StartHttpServer(apiHost string, apiPort int) {
 		return ctx.NoContent(http.StatusOK)
 	})
 
-	e.GET("/sync/bulk/atx/ts/:ts", func(ctx echo.Context) error {
+	e.GET("/sync/bulk/atxs/ts/:ts", func(ctx echo.Context) error {
 		ts := ctx.Param("ts")
 		timestamp, err := strconv.ParseInt(ts, 10, 64)
 		if err != nil {
@@ -62,7 +81,7 @@ func (c *Collector) StartHttpServer(apiHost string, apiPort int) {
 		return ctx.NoContent(http.StatusOK)
 	})
 
-	e.GET("/sync/atx/:epoch", func(ctx echo.Context) error {
+	e.GET("/sync/atxs/:epoch", func(ctx echo.Context) error {
 		epoch := ctx.Param("epoch")
 		epochId, err := strconv.ParseInt(epoch, 10, 64)
 		if err != nil {
@@ -85,7 +104,7 @@ func (c *Collector) StartHttpServer(apiHost string, apiPort int) {
 		return ctx.NoContent(http.StatusOK)
 	})
 
-	e.GET("/sync/bulk/atx/:epoch", func(ctx echo.Context) error {
+	e.GET("/sync/bulk/atxs/:epoch", func(ctx echo.Context) error {
 		epoch := ctx.Param("epoch")
 		epochId, err := strconv.ParseInt(epoch, 10, 64)
 		if err != nil {
diff --git a/collector/sql/atxs.go b/collector/sql/atxs.go
index 4620827..9ce07d9 100644
--- a/collector/sql/atxs.go
+++ b/collector/sql/atxs.go
@@ -2,9 +2,11 @@ package sql
 
 import (
 	"fmt"
+	"github.com/spacemeshos/explorer-backend/utils"
 	"github.com/spacemeshos/go-spacemesh/codec"
 	"github.com/spacemeshos/go-spacemesh/common/types"
 	"github.com/spacemeshos/go-spacemesh/sql"
+	"github.com/spacemeshos/go-spacemesh/sql/atxs"
 	"time"
 )
 
@@ -130,3 +132,20 @@ func (c *Client) GetAtxsByEpochPaginated(db *sql.Database, epoch, limit, offset
 	}
 	return derr
 }
+
+func (c *Client) GetAtxById(db *sql.Database, id string) (*types.VerifiedActivationTx, error) {
+	idBytes, err := utils.StringToBytes(id)
+	if err != nil {
+		return nil, err
+	}
+
+	var atxId types.ATXID
+	copy(atxId[:], idBytes)
+
+	atx, err := atxs.Get(db, atxId)
+	if err != nil {
+		return nil, err
+	}
+
+	return atx, nil
+}
diff --git a/collector/sql/sql.go b/collector/sql/sql.go
index 63adab5..56a6e1e 100644
--- a/collector/sql/sql.go
+++ b/collector/sql/sql.go
@@ -16,6 +16,7 @@ type DatabaseClient interface {
 	GetAtxsByEpoch(db *sql.Database, epoch int64, fn func(tx *types.VerifiedActivationTx) bool) error
 	CountAtxsByEpoch(db *sql.Database, epoch int64) (int, error)
 	GetAtxsByEpochPaginated(db *sql.Database, epoch, limit, offset int64, fn func(tx *types.VerifiedActivationTx) bool) error
+	GetAtxById(db *sql.Database, id string) (*types.VerifiedActivationTx, error)
 }
 
 type Client struct{}
diff --git a/model/network_info.go b/model/network_info.go
index 82f1621..c5adaee 100644
--- a/model/network_info.go
+++ b/model/network_info.go
@@ -6,6 +6,7 @@ type NetworkInfo struct {
 	EpochNumLayers           uint32 `json:"layers" bson:"layers"`
 	MaxTransactionsPerSecond uint32 `json:"maxtx" bson:"maxtx"`
 	LayerDuration            uint32 `json:"duration" bson:"duration"`
+	PostUnitSize             uint64 `json:"postUnitSize" bson:"postUnitSize"`
 
 	LastLayer          uint32 `json:"lastlayer" bson:"lastlayer"`
 	LastLayerTimestamp uint32 `json:"lastlayerts" bson:"lastlayerts"`
diff --git a/storage/network_info.go b/storage/network_info.go
index 036fdc9..bad8ac7 100644
--- a/storage/network_info.go
+++ b/storage/network_info.go
@@ -57,6 +57,7 @@ func (s *Storage) SaveOrUpdateNetworkInfo(parent context.Context, in *model.Netw
 			{Key: "layers", Value: in.EpochNumLayers},
 			{Key: "maxtx", Value: in.MaxTransactionsPerSecond},
 			{Key: "duration", Value: in.LayerDuration},
+			{Key: "postUnitSize", Value: in.PostUnitSize},
 			{Key: "lastlayer", Value: in.LastLayer},
 			{Key: "lastlayerts", Value: in.LastLayerTimestamp},
 			{Key: "lastapprovedlayer", Value: in.LastApprovedLayer},
diff --git a/storage/storage.go b/storage/storage.go
index 42f918a..3a644f2 100644
--- a/storage/storage.go
+++ b/storage/storage.go
@@ -155,6 +155,7 @@ func (s *Storage) OnNetworkInfo(genesisId string, genesisTime uint64, epochNumLa
 	s.NetworkInfo.EpochNumLayers = epochNumLayers
 	s.NetworkInfo.MaxTransactionsPerSecond = uint32(maxTransactionsPerSecond)
 	s.NetworkInfo.LayerDuration = uint32(layerDuration)
+	s.NetworkInfo.PostUnitSize = postUnitSize
 	s.postUnitSize = postUnitSize
 
 	err := s.SaveOrUpdateNetworkInfo(context.Background(), &s.NetworkInfo)
diff --git a/test/testseed/db.go b/test/testseed/db.go
index 9d439d8..f741764 100644
--- a/test/testseed/db.go
+++ b/test/testseed/db.go
@@ -214,6 +214,10 @@ func (c *Client) GetAtxsByEpochPaginated(db *sql.Database, epoch, limit, offset
 	return nil
 }
 
+func (c *Client) GetAtxById(db *sql.Database, id string) (*types.VerifiedActivationTx, error) {
+	return nil, nil
+}
+
 func mustParse(str string) []byte {
 	res, err := utils.StringToBytes(str)
 	if err != nil {