diff --git a/client/enums/run_review_decision.go b/client/enums/run_review_decision.go
new file mode 100644
index 0000000..8d8a35c
--- /dev/null
+++ b/client/enums/run_review_decision.go
@@ -0,0 +1,12 @@
+package enums
+
+// RunReviewDecision represents the API RunReviewDecision enum.
+type RunReviewDecision string
+
+const (
+	// RunReviewDecisionApprove represents an approval decision.
+	RunReviewDecisionApprove = "APPROVE"
+
+	// RunReviewDecisionReject represents a rejection decision.
+	RunReviewDecisionReject = "REJECT"
+)
diff --git a/internal/cmd/stack/flags.go b/internal/cmd/stack/flags.go
index 6e73521..8c0765a 100644
--- a/internal/cmd/stack/flags.go
+++ b/internal/cmd/stack/flags.go
@@ -36,12 +36,17 @@ var flagRequiredCommitSHA = &cli.StringFlag{
 	Required: true,
 }
 
-var flagRun = &cli.StringFlag{
+var flagRequiredRun = &cli.StringFlag{
 	Name:     "run",
 	Usage:    "[Required] `ID` of the run",
 	Required: true,
 }
 
+var flagRun = &cli.StringFlag{
+	Name:  "run",
+	Usage: "`ID` of the run",
+}
+
 var flagNoInit = &cli.BoolFlag{
 	Name:  "noinit",
 	Usage: "Indicate whether to skip initialization for a task",
diff --git a/internal/cmd/stack/run_confirm.go b/internal/cmd/stack/run_confirm.go
index 6778474..18f91f9 100644
--- a/internal/cmd/stack/run_confirm.go
+++ b/internal/cmd/stack/run_confirm.go
@@ -22,7 +22,7 @@ func runConfirm() cli.ActionFunc {
 
 		variables := map[string]interface{}{
 			"stack": graphql.ID(stackID),
-			"run":   graphql.ID(cliCtx.String(flagRun.Name)),
+			"run":   graphql.ID(cliCtx.String(flagRequiredRun.Name)),
 		}
 
 		ctx := context.Background()
diff --git a/internal/cmd/stack/run_discard.go b/internal/cmd/stack/run_discard.go
index 808210a..afb555a 100644
--- a/internal/cmd/stack/run_discard.go
+++ b/internal/cmd/stack/run_discard.go
@@ -22,7 +22,7 @@ func runDiscard() cli.ActionFunc {
 
 		variables := map[string]interface{}{
 			"stack": graphql.ID(stackID),
-			"run":   graphql.ID(cliCtx.String(flagRun.Name)),
+			"run":   graphql.ID(cliCtx.String(flagRequiredRun.Name)),
 		}
 
 		ctx := context.Background()
diff --git a/internal/cmd/stack/run_retry.go b/internal/cmd/stack/run_retry.go
index aa28e7b..ac9621d 100644
--- a/internal/cmd/stack/run_retry.go
+++ b/internal/cmd/stack/run_retry.go
@@ -11,7 +11,7 @@ import (
 
 func runRetry(cliCtx *cli.Context) error {
 	stackID := cliCtx.String(flagStackID.Name)
-	runID := cliCtx.String(flagRun.Name)
+	runID := cliCtx.String(flagRequiredRun.Name)
 
 	var mutation struct {
 		RunRetry struct {
diff --git a/internal/cmd/stack/run_review.go b/internal/cmd/stack/run_review.go
new file mode 100644
index 0000000..7085aed
--- /dev/null
+++ b/internal/cmd/stack/run_review.go
@@ -0,0 +1,65 @@
+package stack
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/shurcooL/graphql"
+	"github.com/urfave/cli/v2"
+
+	"github.com/spacelift-io/spacectl/client/enums"
+	"github.com/spacelift-io/spacectl/internal/cmd/authenticated"
+)
+
+type runReviewMutation struct {
+	Review struct {
+		ID string `graphql:"id"`
+	} `graphql:"runReview(stack: $stack, run: $run, decision: $decision, note: $note)"`
+}
+
+var flagRunReviewNote = &cli.StringFlag{
+	Name:     "note",
+	Usage:    "Description of why the review decision was made.",
+	Required: false,
+}
+
+func runApprove(cliCtx *cli.Context) error {
+	stackID := cliCtx.String(flagStackID.Name)
+	runID := cliCtx.String(flagRequiredRun.Name)
+	note := cliCtx.String(flagRunReviewNote.Name)
+
+	if nArgs := cliCtx.NArg(); nArgs != 0 {
+		return fmt.Errorf("expected zero arguments but got %d", nArgs)
+	}
+
+	return addRunReview(cliCtx.Context, stackID, runID, note, enums.RunReviewDecisionApprove)
+}
+
+func runReject(cliCtx *cli.Context) error {
+	stackID := cliCtx.String(flagStackID.Name)
+	runID := cliCtx.String(flagRequiredRun.Name)
+	note := cliCtx.String(flagRunReviewNote.Name)
+
+	if nArgs := cliCtx.NArg(); nArgs != 0 {
+		return fmt.Errorf("expected zero arguments but got %d", nArgs)
+	}
+
+	return addRunReview(cliCtx.Context, stackID, runID, note, enums.RunReviewDecisionReject)
+}
+
+func addRunReview(ctx context.Context, stackID, runID, note string, decision enums.RunReviewDecision) error {
+	var runIDGQL *graphql.ID
+	if runID != "" {
+		runIDGQL = graphql.NewID(runID)
+	}
+
+	var mutation runReviewMutation
+	variables := map[string]interface{}{
+		"stack":    graphql.ID(stackID),
+		"run":      runIDGQL,
+		"decision": decision,
+		"note":     graphql.String(note),
+	}
+
+	return authenticated.Client.Mutate(ctx, &mutation, variables)
+}
diff --git a/internal/cmd/stack/stack.go b/internal/cmd/stack/stack.go
index df5614a..ce12128 100644
--- a/internal/cmd/stack/stack.go
+++ b/internal/cmd/stack/stack.go
@@ -21,7 +21,7 @@ func Command() *cli.Command {
 				Usage:    "Confirm an unconfirmed tracked run",
 				Flags: []cli.Flag{
 					flagStackID,
-					flagRun,
+					flagRequiredRun,
 					flagRunMetadata,
 					flagTail,
 				},
@@ -35,13 +35,39 @@ func Command() *cli.Command {
 				Usage:    "Discard an unconfirmed tracked run",
 				Flags: []cli.Flag{
 					flagStackID,
-					flagRun,
+					flagRequiredRun,
 					flagTail,
 				},
 				Action:    runDiscard(),
 				Before:    authenticated.Ensure,
 				ArgsUsage: cmd.EmptyArgsUsage,
 			},
+			{
+				Category: "Run management",
+				Name:     "approve",
+				Usage:    "Approves a run or task. If no run is specified, the approval will be added to the current stack blocker.",
+				Flags: []cli.Flag{
+					flagStackID,
+					flagRun,
+					flagRunReviewNote,
+				},
+				Action:    runApprove,
+				Before:    authenticated.Ensure,
+				ArgsUsage: cmd.EmptyArgsUsage,
+			},
+			{
+				Category: "Run management",
+				Name:     "reject",
+				Usage:    "Rejects a run or task. If no run is specified, the rejection will be added to the current stack blocker.",
+				Flags: []cli.Flag{
+					flagStackID,
+					flagRun,
+					flagRunReviewNote,
+				},
+				Action:    runReject,
+				Before:    authenticated.Ensure,
+				ArgsUsage: cmd.EmptyArgsUsage,
+			},
 			{
 				Category: "Run management",
 				Name:     "deploy",
@@ -62,7 +88,7 @@ func Command() *cli.Command {
 				Usage:    "Retry a failed run",
 				Flags: []cli.Flag{
 					flagStackID,
-					flagRun,
+					flagRequiredRun,
 					flagTail,
 				},
 				Action:    runRetry,
@@ -100,11 +126,11 @@ func Command() *cli.Command {
 				Usage:    "Show logs for a particular run",
 				Flags: []cli.Flag{
 					flagStackID,
-					flagRun,
+					flagRequiredRun,
 				},
 				Action: func(cliCtx *cli.Context) error {
 					stackID := cliCtx.String(flagStackID.Name)
-					_, err := runLogs(context.Background(), stackID, cliCtx.String(flagRun.Name))
+					_, err := runLogs(context.Background(), stackID, cliCtx.String(flagRequiredRun.Name))
 					return err
 				},
 				Before:    authenticated.Ensure,
diff --git a/specs/spacectl-to-v1.md b/specs/spacectl-to-v1.md
index 4caea33..e242c2d 100644
--- a/specs/spacectl-to-v1.md
+++ b/specs/spacectl-to-v1.md
@@ -169,8 +169,11 @@ We should support the following commands for working with Stacks:
   - [ ] `delete` - deletes a stack
   - [x] `show` - outputs information about a specified Stack
   - [ ] `edit` - edits the name, labels and description for the stack
-  - [ ] `set-current-commit` - sets the current commit for the stack
+  - [x] `set-current-commit` - sets the current commit for the stack
   - [x] `confirm` - confirms a run awaiting approval
+  - [x] `discard` - discards a run awaiting approval
+  - [x] `approve` - approves a run or task
+  - [x] `reject` - rejects a run or task
   - [x] `deploy` - triggers a tracked (i.e. deployment) run
   - [x] `preview` - triggers a preview run for a specific commit
   - [x] `local-preview` - triggers a local-preview run using the current directory as the workspace