diff --git a/.changeset/four-jokes-build.md b/.changeset/four-jokes-build.md
new file mode 100644
index 0000000..b0f7310
--- /dev/null
+++ b/.changeset/four-jokes-build.md
@@ -0,0 +1,5 @@
+---
+"@livekit/protocol": patch
+---
+
+add observability grant setter
diff --git a/auth/accesstoken.go b/auth/accesstoken.go
index a8aabb6..f9f960b 100644
--- a/auth/accesstoken.go
+++ b/auth/accesstoken.go
@@ -93,6 +93,11 @@ func (t *AccessToken) SetInferenceGrant(grant *InferenceGrant) *AccessToken {
 	return t
 }
 
+func (t *AccessToken) SetObservabilityGrant(grant *ObservabilityGrant) *AccessToken {
+	t.grant.Observability = grant
+	return t
+}
+
 func (t *AccessToken) SetMetadata(md string) *AccessToken {
 	t.grant.Metadata = md
 	return t