From 4f088c7ab8febcf16815cf6f173f122c4af08603 Mon Sep 17 00:00:00 2001
From: YeonGyu-Kim <code.yeon.gyu@gmail.com>
Date: Mon, 9 Mar 2026 11:27:58 +0900
Subject: [PATCH] test(plugin): run tool output truncation before claude
 transcript hooks

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
---
 src/plugin/tool-execute-after.test.ts | 35 +++++++++++++++++++++++++++
 src/plugin/tool-execute-after.ts      |  2 +-
 2 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 src/plugin/tool-execute-after.test.ts

diff --git a/src/plugin/tool-execute-after.test.ts b/src/plugin/tool-execute-after.test.ts
new file mode 100644
index 000000000..cb70a91f8
--- /dev/null
+++ b/src/plugin/tool-execute-after.test.ts
@@ -0,0 +1,35 @@
+import { describe, expect, it } from "bun:test"
+import { createToolExecuteAfterHandler } from "./tool-execute-after"
+
+describe("createToolExecuteAfterHandler", () => {
+  it("#given truncator changes output #when tool.execute.after runs #then claudeCodeHooks receives truncated output", async () => {
+    const callOrder: string[] = []
+    let claudeSawOutput = ""
+
+    const handler = createToolExecuteAfterHandler({
+      ctx: { directory: "/repo" } as never,
+      hooks: {
+        toolOutputTruncator: {
+          "tool.execute.after": async (_input, output) => {
+            callOrder.push("truncator")
+            output.output = "truncated output"
+          },
+        },
+        claudeCodeHooks: {
+          "tool.execute.after": async (_input, output) => {
+            callOrder.push("claude")
+            claudeSawOutput = output.output
+          },
+        },
+      } as never,
+    })
+
+    await handler(
+      { tool: "hashline_edit", sessionID: "ses_test", callID: "call_test" },
+      { title: "result", output: "original output", metadata: {} }
+    )
+
+    expect(callOrder).toEqual(["truncator", "claude"])
+    expect(claudeSawOutput).toBe("truncated output")
+  })
+})
diff --git a/src/plugin/tool-execute-after.ts b/src/plugin/tool-execute-after.ts
index 4dfeda03c..1d08d29e5 100644
--- a/src/plugin/tool-execute-after.ts
+++ b/src/plugin/tool-execute-after.ts
@@ -56,8 +56,8 @@ export function createToolExecuteAfterHandler(args: {
       }
     }
 
-    await hooks.claudeCodeHooks?.["tool.execute.after"]?.(input, output)
     await hooks.toolOutputTruncator?.["tool.execute.after"]?.(input, output)
+    await hooks.claudeCodeHooks?.["tool.execute.after"]?.(input, output)
     await hooks.preemptiveCompaction?.["tool.execute.after"]?.(input, output)
     await hooks.contextWindowMonitor?.["tool.execute.after"]?.(input, output)
     await hooks.commentChecker?.["tool.execute.after"]?.(input, output)