diff --git a/packages/cli/src/acp/permission.ts b/packages/cli/src/acp/permission.ts
index d5a00b69b2..712cfad97d 100644
--- a/packages/cli/src/acp/permission.ts
+++ b/packages/cli/src/acp/permission.ts
@@ -2,7 +2,7 @@ import type { AgentSideConnection, PermissionOption, ToolCallContent, ToolCallLo
 import type { EventSubscribeOutput, OpenCodeClient } from "@opencode-ai/client/promise"
 import { Patch } from "@opencode-ai/core/patch"
 import { isAbsolute, resolve } from "node:path"
-import { pendingToolCall, toLocations, toToolKind, type ToolInput } from "./tool"
+import { pendingToolCall, stringValue, toLocations, toToolKind, type ToolInput } from "./tool"
 
 type PermissionEvent = Extract<EventSubscribeOutput, { type: "permission.v2.asked" }>
 type Connection = Pick<AgentSideConnection, "requestPermission"> & Partial<Pick<AgentSideConnection, "writeTextFile">>
@@ -173,8 +173,4 @@ function resolvePath(path: string, cwd: string) {
   return isAbsolute(path) ? path : resolve(cwd, path)
 }
 
-function stringValue(value: unknown) {
-  return typeof value === "string" ? value : undefined
-}
-
 export * as ACPPermission from "./permission"
diff --git a/packages/cli/src/acp/tool.ts b/packages/cli/src/acp/tool.ts
index 0838d69935..468512f892 100644
--- a/packages/cli/src/acp/tool.ts
+++ b/packages/cli/src/acp/tool.ts
@@ -215,7 +215,7 @@ function locationFrom(...values: unknown[]): ToolCallLocation[] {
   )
 }
 
-function stringValue(value: unknown) {
+export function stringValue(value: unknown) {
   return typeof value === "string" ? value : undefined
 }