diff --git a/server/app/proposal.go b/server/app/proposal.go
new file mode 100644
index 0000000..4b2acc4
--- /dev/null
+++ b/server/app/proposal.go
@@ -0,0 +1,26 @@
+package app
+
+import (
+	"fmt"
+
+	"github.com/iomodo/staff/git"
+)
+
+func (a *App) ProposalApproval(body []byte, signature string) error {
+	// Validate the webhook signature
+	if err := git.ValidateSignature(body, signature, a.config.GitHub.WebhookSecret); err != nil {
+		return fmt.Errorf("invalid webhook signature: %w", err)
+	}
+
+	// Process the webhook payload
+	taskID, err := git.ProcessMergeWebhook(body, signature, a.config.GitHub.WebhookSecret)
+	if err != nil {
+		return fmt.Errorf("Failed to process webhook: %w", err)
+	}
+
+	// Log the successful approval
+	a.logger.Info("Proposal approved via webhook",
+		"task_id", taskID,
+	)
+	return nil
+}