From 5127642b3db3f6a843c78fb4201414a2bad4303a Mon Sep 17 00:00:00 2001
From: Noah Martin <noahm444@gmail.com>
Date: Mon, 11 May 2026 09:28:13 -0700
Subject: [PATCH 1/2] ref: Add max usage ts

---
 .../billing/v1/services/usage/v1/endpoint_usage.proto       | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/proto/sentry_protos/billing/v1/services/usage/v1/endpoint_usage.proto b/proto/sentry_protos/billing/v1/services/usage/v1/endpoint_usage.proto
index 73babbfe..2a3c4673 100644
--- a/proto/sentry_protos/billing/v1/services/usage/v1/endpoint_usage.proto
+++ b/proto/sentry_protos/billing/v1/services/usage/v1/endpoint_usage.proto
@@ -36,6 +36,12 @@ message GetUsageResponse {
   repeated DailySeatUsage seat_days = 3;
 
   repeated CategorySeatUsage seats = 2 [deprecated = true]; // DEPRECATED: use seat_days
+
+  // The latest timestamp of usage data included in this response (inclusive
+  // — there is at least one row at exactly this timestamp). Callers persist
+  // this as the contract's watermark; subsequent queries should resume
+  // strictly after this timestamp to avoid double-counting the boundary.
+  optional google.protobuf.Timestamp last_usage_ts = 4;
 }
 
 message GetUsageRequest {

From d37f4304fd7240f2f5f0177c1af7c5aec8e1aeb5 Mon Sep 17 00:00:00 2001
From: "getsantry[bot]" <66042841+getsantry[bot]@users.noreply.github.com>
Date: Mon, 11 May 2026 16:32:03 +0000
Subject: [PATCH 2/2] chore: Regenerate Rust bindings

---
 Cargo.lock                                             | 2 +-
 rust/src/sentry_protos.billing.v1.services.usage.v1.rs | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index ba5c3c8e..ad90a3fa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -717,7 +717,7 @@ checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
 
 [[package]]
 name = "sentry_protos"
-version = "0.8.29"
+version = "0.8.30"
 dependencies = [
  "prost",
  "prost-types",
diff --git a/rust/src/sentry_protos.billing.v1.services.usage.v1.rs b/rust/src/sentry_protos.billing.v1.services.usage.v1.rs
index a170e385..8611ba68 100644
--- a/rust/src/sentry_protos.billing.v1.services.usage.v1.rs
+++ b/rust/src/sentry_protos.billing.v1.services.usage.v1.rs
@@ -78,6 +78,12 @@ pub struct GetUsageResponse {
     #[deprecated]
     #[prost(message, repeated, tag = "2")]
     pub seats: ::prost::alloc::vec::Vec<CategorySeatUsage>,
+    /// The latest timestamp of usage data included in this response (inclusive
+    /// — there is at least one row at exactly this timestamp). Callers persist
+    /// this as the contract's watermark; subsequent queries should resume
+    /// strictly after this timestamp to avoid double-counting the boundary.
+    #[prost(message, optional, tag = "4")]
+    pub last_usage_ts: ::core::option::Option<::prost_types::Timestamp>,
 }
 #[derive(Clone, PartialEq, Eq, Hash, ::prost::Message)]
 pub struct GetUsageRequest {