diff --git a/src/auto-reply/reply/abort.test.ts b/src/auto-reply/reply/abort.test.ts
index 33cd57de6d..984b6e8aac 100644
--- a/src/auto-reply/reply/abort.test.ts
+++ b/src/auto-reply/reply/abort.test.ts
@@ -1,9 +1,16 @@
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
-import { describe, expect, it, vi } from "vitest";
+import { afterEach, describe, expect, it, vi } from "vitest";
 import type { OpenClawConfig } from "../../config/config.js";
-import { isAbortTrigger, tryFastAbortFromMessage } from "./abort.js";
+import {
+  getAbortMemory,
+  getAbortMemorySizeForTest,
+  isAbortTrigger,
+  resetAbortMemoryForTest,
+  setAbortMemory,
+  tryFastAbortFromMessage,
+} from "./abort.js";
 import { enqueueFollowupRun, getFollowupQueueDepth, type FollowupRun } from "./queue.js";
 import { initSessionState } from "./session.js";
 import { buildTestCtx } from "./test-ctx.js";
@@ -28,6 +35,10 @@ vi.mock("../../agents/subagent-registry.js", () => ({
 }));
 
 describe("abort detection", () => {
+  afterEach(() => {
+    resetAbortMemoryForTest();
+  });
+
   it("triggerBodyNormalized extracts /stop from RawBody for abort detection", async () => {
     const root = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-abort-"));
     const storePath = path.join(root, "sessions.json");
@@ -62,6 +73,24 @@ describe("abort detection", () => {
     expect(isAbortTrigger("/stop")).toBe(false);
   });
 
+  it("removes abort memory entry when flag is reset", () => {
+    setAbortMemory("session-1", true);
+    expect(getAbortMemory("session-1")).toBe(true);
+
+    setAbortMemory("session-1", false);
+    expect(getAbortMemory("session-1")).toBeUndefined();
+    expect(getAbortMemorySizeForTest()).toBe(0);
+  });
+
+  it("caps abort memory tracking to a bounded max size", () => {
+    for (let i = 0; i < 2105; i += 1) {
+      setAbortMemory(`session-${i}`, true);
+    }
+    expect(getAbortMemorySizeForTest()).toBe(2000);
+    expect(getAbortMemory("session-0")).toBeUndefined();
+    expect(getAbortMemory("session-2104")).toBe(true);
+  });
+
   it("fast-aborts even when text commands are disabled", async () => {
     const root = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-abort-"));
     const storePath = path.join(root, "sessions.json");
diff --git a/src/auto-reply/reply/abort.ts b/src/auto-reply/reply/abort.ts
index 42b4f1708a..de2583c9d3 100644
--- a/src/auto-reply/reply/abort.ts
+++ b/src/auto-reply/reply/abort.ts
@@ -22,6 +22,7 @@ import { clearSessionQueues } from "./queue.js";
 
 const ABORT_TRIGGERS = new Set(["stop", "esc", "abort", "wait", "exit", "interrupt"]);
 const ABORT_MEMORY = new Map<string, boolean>();
+const ABORT_MEMORY_MAX = 2000;
 
 export function isAbortTrigger(text?: string): boolean {
   if (!text) {
@@ -32,11 +33,51 @@ export function isAbortTrigger(text?: string): boolean {
 }
 
 export function getAbortMemory(key: string): boolean | undefined {
-  return ABORT_MEMORY.get(key);
+  const normalized = key.trim();
+  if (!normalized) {
+    return undefined;
+  }
+  return ABORT_MEMORY.get(normalized);
+}
+
+function pruneAbortMemory(): void {
+  if (ABORT_MEMORY.size <= ABORT_MEMORY_MAX) {
+    return;
+  }
+  const excess = ABORT_MEMORY.size - ABORT_MEMORY_MAX;
+  let removed = 0;
+  for (const entryKey of ABORT_MEMORY.keys()) {
+    ABORT_MEMORY.delete(entryKey);
+    removed += 1;
+    if (removed >= excess) {
+      break;
+    }
+  }
 }
 
 export function setAbortMemory(key: string, value: boolean): void {
-  ABORT_MEMORY.set(key, value);
+  const normalized = key.trim();
+  if (!normalized) {
+    return;
+  }
+  if (!value) {
+    ABORT_MEMORY.delete(normalized);
+    return;
+  }
+  // Refresh insertion order so active keys are less likely to be evicted.
+  if (ABORT_MEMORY.has(normalized)) {
+    ABORT_MEMORY.delete(normalized);
+  }
+  ABORT_MEMORY.set(normalized, true);
+  pruneAbortMemory();
+}
+
+export function getAbortMemorySizeForTest(): number {
+  return ABORT_MEMORY.size;
+}
+
+export function resetAbortMemoryForTest(): void {
+  ABORT_MEMORY.clear();
 }
 
 export function formatAbortReplyText(stoppedSubagents?: number): string {