diff --git a/apps/server/src/terminal/Layers/Manager.test.ts b/apps/server/src/terminal/Layers/Manager.test.ts
index 304b49d42b79..21ab1e7d5cc7 100644
--- a/apps/server/src/terminal/Layers/Manager.test.ts
+++ b/apps/server/src/terminal/Layers/Manager.test.ts
@@ -639,6 +639,38 @@ describe("TerminalManager", () => {
     manager.dispose();
   });
 
+  it("silently drops write to exited terminal instead of throwing", async () => {
+    const { manager, ptyAdapter } = makeManager();
+    await manager.open(openInput());
+    const process = ptyAdapter.processes[0];
+    expect(process).toBeDefined();
+    if (!process) return;
+
+    process.emitExit({ exitCode: 0, signal: 0 });
+
+    await expect(
+      manager.write({ threadId: "thread-1", data: "hello\n" }),
+    ).resolves.toBeUndefined();
+
+    manager.dispose();
+  });
+
+  it("silently drops resize to exited terminal instead of throwing", async () => {
+    const { manager, ptyAdapter } = makeManager();
+    await manager.open(openInput());
+    const process = ptyAdapter.processes[0];
+    expect(process).toBeDefined();
+    if (!process) return;
+
+    process.emitExit({ exitCode: 0, signal: 0 });
+
+    await expect(
+      manager.resize({ threadId: "thread-1", cols: 200, rows: 50 }),
+    ).resolves.toBeUndefined();
+
+    manager.dispose();
+  });
+
   it("starts zsh with prompt spacer disabled to avoid `%` end markers", async () => {
     if (process.platform === "win32") return;
     const { manager, ptyAdapter } = makeManager(5, {
diff --git a/apps/server/src/terminal/Layers/Manager.ts b/apps/server/src/terminal/Layers/Manager.ts
index fa766da570f1..13d88cedbba5 100644
--- a/apps/server/src/terminal/Layers/Manager.ts
+++ b/apps/server/src/terminal/Layers/Manager.ts
@@ -438,25 +438,29 @@ export class TerminalManagerRuntime extends EventEmitter<TerminalManagerEvents>
     const input = decodeTerminalWriteInput(raw);
     const session = this.requireSession(input.threadId, input.terminalId);
     if (!session.process || session.status !== "running") {
-      throw new Error(
-        `Terminal is not running for thread: ${input.threadId}, terminal: ${input.terminalId}`,
-      );
+      return;
+    }
+    try {
+      session.process.write(input.data);
+    } catch {
+      // Process may have exited between the status check and the write call.
     }
-    session.process.write(input.data);
   }
 
   async resize(raw: TerminalResizeInput): Promise<void> {
     const input = decodeTerminalResizeInput(raw);
     const session = this.requireSession(input.threadId, input.terminalId);
     if (!session.process || session.status !== "running") {
-      throw new Error(
-        `Terminal is not running for thread: ${input.threadId}, terminal: ${input.terminalId}`,
-      );
+      return;
     }
     session.cols = input.cols;
     session.rows = input.rows;
     session.updatedAt = new Date().toISOString();
-    session.process.resize(input.cols, input.rows);
+    try {
+      session.process.resize(input.cols, input.rows);
+    } catch {
+      // Process may have exited between the status check and the resize call.
+    }
   }
 
   async clear(raw: TerminalClearInput): Promise<void> {