diff --git a/packages/server/src/server/agent/providers/opencode/tool-call-detail-parser.ts b/packages/server/src/server/agent/providers/opencode/tool-call-detail-parser.ts
index afe89b85b4..39a7deb8c9 100644
--- a/packages/server/src/server/agent/providers/opencode/tool-call-detail-parser.ts
+++ b/packages/server/src/server/agent/providers/opencode/tool-call-detail-parser.ts
@@ -221,6 +221,15 @@ function deriveOpencodeTaskDetail(
   };
 }
 
+function toOpencodeEditInput(value: { filePath: string; oldString?: string; newString?: string }) {
+  return {
+    filePath: value.filePath,
+    oldString: nonEmptyString(value.oldString),
+    newString: nonEmptyString(value.newString),
+    unifiedDiff: undefined,
+  };
+}
+
 const OpencodeEditInputSchema = z.union([
   z
     .object({
@@ -229,12 +238,12 @@ const OpencodeEditInputSchema = z.union([
       newString: z.string().optional(),
     })
     .passthrough()
-    .transform((value) => ({
-      filePath: value.filePath,
-      oldString: nonEmptyString(value.oldString),
-      newString: nonEmptyString(value.newString),
-      unifiedDiff: undefined,
-    })),
+    .transform(toOpencodeEditInput),
+  // OpenCode v2's edit tool names the file `path`.
+  z
+    .object({ path: z.string(), oldString: z.string(), newString: z.string() })
+    .passthrough()
+    .transform((value) => toOpencodeEditInput({ ...value, filePath: value.path })),
   ToolEditInputSchema,
 ]);
 
diff --git a/packages/server/src/server/agent/providers/opencode/v2/timeline.test.ts b/packages/server/src/server/agent/providers/opencode/v2/timeline.test.ts
new file mode 100644
index 0000000000..1bbd86490a
--- /dev/null
+++ b/packages/server/src/server/agent/providers/opencode/v2/timeline.test.ts
@@ -0,0 +1,56 @@
+import type { SessionMessageAssistant } from "@opencode/client";
+import { expect, test } from "vitest";
+import { V2Timeline } from "./timeline.js";
+
+function assistant(content: SessionMessageAssistant["content"]): SessionMessageAssistant {
+  return {
+    id: "answer",
+    type: "assistant",
+    agent: "build",
+    model: { providerID: "test", id: "model" },
+    time: { created: 2 },
+    content,
+  };
+}
+
+test("a completed edit carries the replaced and replacement text", () => {
+  // Captured from OpenCode 2.0.18, whose edit tool takes `path` instead of `filePath`.
+  const edit = assistant([
+    {
+      type: "tool",
+      id: "call-edit",
+      name: "edit",
+      executed: false,
+      state: {
+        status: "completed",
+        input: { path: "a.txt", oldString: "beta", newString: "BETA" },
+        content: [{ type: "text", text: "Edited a.txt (1 replacement)" }],
+        metadata: {
+          files: [
+            {
+              file: "a.txt",
+              patch:
+                "Index: a.txt\n===================================================================\n--- a.txt\n+++ a.txt\n@@ -1,3 +1,3 @@\n alpha\n-beta\n+BETA\n gamma\n",
+              status: "modified",
+              additions: 1,
+              deletions: 1,
+            },
+          ],
+          truncated: false,
+        },
+      },
+      time: { created: 2, ran: 2, completed: 2 },
+    },
+  ]);
+
+  expect(new V2Timeline().messages([edit])).toMatchObject([
+    {
+      item: {
+        type: "tool_call",
+        name: "edit",
+        status: "completed",
+        detail: { type: "edit", filePath: "a.txt", oldString: "beta", newString: "BETA" },
+      },
+    },
+  ]);
+});