diff --git a/api/build/restart.go b/api/build/restart.go
index 5d42a9737..3a05ad93b 100644
--- a/api/build/restart.go
+++ b/api/build/restart.go
@@ -89,6 +89,7 @@ func RestartBuild(c *gin.Context) {
 	o := org.Retrieve(c)
 	r := repo.Retrieve(c)
 	u := user.Retrieve(c)
+	scm := scm.FromContext(c)
 	ctx := c.Request.Context()
 
 	entry := fmt.Sprintf("%s/%d", r.GetFullName(), b.GetNumber())
@@ -114,10 +115,18 @@ func RestartBuild(c *gin.Context) {
 
 	// set sender to the user who initiated the restart and
 	b.SetSender(cl.Subject)
-	// todo: sender_scm_id:
-	//  vela username is the claims subject
-	//  - (a) auth with repo token and convert username to scm id
-	//  - (b) attach scm id to claims
+
+	// fetch user scm id
+	senderID, err := scm.GetUserID(ctx, u)
+	if err != nil {
+		retErr := fmt.Errorf("unable to get user scm id for %s: %w", u.GetName(), err)
+
+		util.HandleError(c, http.StatusInternalServerError, retErr)
+
+		return
+	}
+
+	b.SetSenderSCMID(senderID)
 
 	// parent to the previous build
 	b.SetParent(b.GetNumber())
@@ -138,7 +147,7 @@ func RestartBuild(c *gin.Context) {
 		c,
 		config,
 		database.FromContext(c),
-		scm.FromContext(c),
+		scm,
 		compiler.FromContext(c),
 		queue.FromContext(c),
 	)
diff --git a/cmd/vela-server/schedule.go b/cmd/vela-server/schedule.go
index 1eb715bd4..6a38998e6 100644
--- a/cmd/vela-server/schedule.go
+++ b/cmd/vela-server/schedule.go
@@ -179,9 +179,20 @@ func processSchedule(ctx context.Context, s *api.Schedule, settings *settings.Pl
 	b.SetRef(fmt.Sprintf("refs/heads/%s", b.GetBranch()))
 	b.SetRepo(r)
 	b.SetSender(s.GetUpdatedBy())
-	// todo: sender_scm_id:
-	//  - (a) auth with repo token and convert username to scm id
-	//  - (b) attach scm user id to schedule updated_by_id (lol)
+
+	// send API call to capture the user for the schedule trigger
+	u, err := database.GetUserForName(ctx, s.GetUpdatedBy())
+	if err != nil {
+		return fmt.Errorf("unable to get user for name %s: %w", s.GetUpdatedBy(), err)
+	}
+
+	// fetch user scm id
+	senderID, err := scm.GetUserID(ctx, u)
+	if err != nil {
+		return fmt.Errorf("unable to get user scm id for %s: %w", u.GetName(), err)
+	}
+
+	b.SetSenderSCMID(senderID)
 
 	b.SetSource(fmt.Sprintf("%s/tree/%s", url, b.GetBranch()))
 	b.SetStatus(constants.StatusPending)
diff --git a/scm/github/user.go b/scm/github/user.go
new file mode 100644
index 000000000..848684521
--- /dev/null
+++ b/scm/github/user.go
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package github
+
+import (
+	"context"
+	"fmt"
+
+	api "github.com/go-vela/server/api/types"
+	"github.com/sirupsen/logrus"
+)
+
+// GetUserID captures the user's scm id.
+func (c *client) GetUserID(ctx context.Context, u *api.User) (string, error) {
+	c.Logger.WithFields(logrus.Fields{
+		"user": u.GetName(),
+	}).Tracef("capturing scm id for %s", u.GetName())
+
+	// create GitHub OAuth client with user's token
+	client := c.newClientToken(*u.Token)
+
+	// send API call to capture user
+	user, _, err := client.Users.Get(ctx, u.GetName())
+	if err != nil {
+		return "", err
+	}
+
+	return fmt.Sprint(user.GetID()), nil
+}
diff --git a/scm/service.go b/scm/service.go
index b65a529eb..d7a21a78e 100644
--- a/scm/service.go
+++ b/scm/service.go
@@ -41,6 +41,12 @@ type Service interface {
 	// the OAuth workflow for the session.
 	Login(context.Context, http.ResponseWriter, *http.Request) (string, error)
 
+	// User SCM Interface Functions
+
+	// GetUserID defines a function that captures
+	// the scm user attached to a Vela user.
+	GetUserID(context.Context, *api.User) (string, error)
+
 	// Access SCM Interface Functions
 
 	// OrgAccess defines a function that captures