From e86266c79419183cd0f50cd91d6042d0df11d057 Mon Sep 17 00:00:00 2001
From: Oleksiy Syvokon <oleksiy.syvokon@gmail.com>
Date: Thu, 30 Apr 2026 09:38:26 +0300
Subject: [PATCH] tools: Make time-zones more case-insensitive

gpt-5.5 likes to call the `now` tool with upper-case "UTC", leading to this error:

Failed to receive tool input: tool input was not fully received
---
 crates/agent/src/tools/now_tool.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crates/agent/src/tools/now_tool.rs b/crates/agent/src/tools/now_tool.rs
index 04aba44ff3a1f4..9721c923b6e8d2 100644
--- a/crates/agent/src/tools/now_tool.rs
+++ b/crates/agent/src/tools/now_tool.rs
@@ -13,8 +13,10 @@ use crate::{AgentTool, ToolCallEventStream, ToolInput};
 #[schemars(inline)]
 pub enum Timezone {
     /// Use UTC for the datetime.
+    #[serde(alias = "UTC", alias = "Utc")]
     Utc,
     /// Use local time for the datetime.
+    #[serde(alias = "LOCAL", alias = "Local")]
     Local,
 }