From 4d5098c2f37a5638f55e52700da4d1684e50dab3 Mon Sep 17 00:00:00 2001
From: Niran Babalola <niran.babalola@coinbase.com>
Date: Thu, 29 Jan 2026 00:34:20 -0600
Subject: [PATCH] Add state_root_time_us field to MeterBundleResponse

The builder returns state_root_time_us in its response but tips was
silently dropping this field during deserialization. Add the field
with serde(default) for backwards compatibility.
---
 crates/core/src/test_utils.rs | 1 +
 crates/core/src/types.rs      | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/crates/core/src/test_utils.rs b/crates/core/src/test_utils.rs
index 32162985..b4c89b30 100644
--- a/crates/core/src/test_utils.rs
+++ b/crates/core/src/test_utils.rs
@@ -75,5 +75,6 @@ pub fn create_test_meter_bundle_response() -> MeterBundleResponse {
         state_flashblock_index: None,
         total_gas_used: 0,
         total_execution_time_us: 0,
+        state_root_time_us: 0,
     }
 }
diff --git a/crates/core/src/types.rs b/crates/core/src/types.rs
index 6c389782..5f1c88f9 100644
--- a/crates/core/src/types.rs
+++ b/crates/core/src/types.rs
@@ -298,6 +298,8 @@ pub struct MeterBundleResponse {
     pub state_flashblock_index: Option<u64>,
     pub total_gas_used: u64,
     pub total_execution_time_us: u128,
+    #[serde(default)]
+    pub state_root_time_us: u128,
 }
 
 #[cfg(test)]