From 9df5ab50504b7d4cc9e4ffb14d780edb0da7c06e Mon Sep 17 00:00:00 2001
From: "zed-zippy[bot]" <234243425+zed-zippy[bot]@users.noreply.github.com>
Date: Fri, 1 May 2026 10:33:57 +0000
Subject: [PATCH] tools: Make time-zones more case-insensitive (#55288)
 (cherry-pick to preview) (#55410)

Cherry-pick of #55288 to preview

----
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


Release Notes:

- N/A

Co-authored-by: Oleksiy Syvokon <oleksiy@zed.dev>
---
 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 04aba44ff3a..9721c923b6e 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,
 }