diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f6ffc3cc3f..6690a5dedd1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,6 +53,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- CLI/tasks: reject partially numeric `openclaw tasks audit --limit` values so audit limits must be real positive integers instead of accepting strings like `5abc`. (#84901) Thanks @jbetala7.
 - Twitch: keep stale message-handler cleanup callbacks from removing newer handler registrations for the same account, preserving inbound message delivery after reconnects. Fixes #83888. (#85425) Thanks @alkor2000.
 - Memory/LanceDB: expose public memory artifacts through the active memory provider bridge so memory-wiki imports durable memory files, daily notes, dream reports, and event logs without depending on memory-core internals. Fixes #83604. (#85060) Thanks @brokemac79.
 - Docker setup: stop printing the Gateway bearer token in setup logs and printed follow-up commands.
diff --git a/src/cli/program/helpers.test.ts b/src/cli/program/helpers.test.ts
index 596a8672941..0d7b7fa3890 100644
--- a/src/cli/program/helpers.test.ts
+++ b/src/cli/program/helpers.test.ts
@@ -3,6 +3,7 @@ import { describe, expect, it } from "vitest";
 import {
   collectOption,
   parsePositiveIntOrUndefined,
+  parseStrictPositiveIntOrUndefined,
   resolveActionArgs,
   resolveCommandOptionArgs,
 } from "./helpers.js";
@@ -31,6 +32,27 @@ describe("program helpers", () => {
     expect(parsePositiveIntOrUndefined(value)).toBe(expected);
   });
 
+  it.each([
+    { value: undefined, expected: undefined },
+    { value: null, expected: undefined },
+    { value: "", expected: undefined },
+    { value: 5, expected: 5 },
+    { value: 5.9, expected: undefined },
+    { value: 0, expected: undefined },
+    { value: -1, expected: undefined },
+    { value: Number.NaN, expected: undefined },
+    { value: "10", expected: 10 },
+    { value: " 10 ", expected: 10 },
+    { value: "+10", expected: 10 },
+    { value: "10ms", expected: undefined },
+    { value: "1.5", expected: undefined },
+    { value: "0", expected: undefined },
+    { value: "nope", expected: undefined },
+    { value: true, expected: undefined },
+  ])("parseStrictPositiveIntOrUndefined(%j)", ({ value, expected }) => {
+    expect(parseStrictPositiveIntOrUndefined(value)).toBe(expected);
+  });
+
   it("resolveActionArgs returns args when command has arg array", () => {
     const command = new Command();
     (command as Command & { args?: string[] }).args = ["one", "two"];
diff --git a/src/cli/program/helpers.ts b/src/cli/program/helpers.ts
index 77c768c34dc..453d04f0a22 100644
--- a/src/cli/program/helpers.ts
+++ b/src/cli/program/helpers.ts
@@ -1,4 +1,5 @@
 import type { Command } from "commander";
+import { parseStrictPositiveInteger } from "../../infra/parse-finite-number.js";
 
 export function collectOption(value: string, previous: string[] = []): string[] {
   return [...previous, value];
@@ -25,6 +26,10 @@ export function parsePositiveIntOrUndefined(value: unknown): number | undefined
   return undefined;
 }
 
+export function parseStrictPositiveIntOrUndefined(value: unknown): number | undefined {
+  return parseStrictPositiveInteger(value);
+}
+
 export function resolveActionArgs(actionCommand?: Command): string[] {
   if (!actionCommand) {
     return [];
diff --git a/src/cli/program/register.status-health-sessions.test.ts b/src/cli/program/register.status-health-sessions.test.ts
index 3decb75d9ed..737c6540e88 100644
--- a/src/cli/program/register.status-health-sessions.test.ts
+++ b/src/cli/program/register.status-health-sessions.test.ts
@@ -433,6 +433,16 @@ describe("registerStatusHealthSessionsCommands", () => {
     });
   });
 
+  it("rejects partially numeric tasks audit limits", async () => {
+    await runCli(["tasks", "--json", "audit", "--limit", "5abc"]);
+
+    expect(runtime.error).toHaveBeenCalledWith(
+      "--limit must be a positive integer, for example --limit 25.",
+    );
+    expect(runtime.exit).toHaveBeenCalledWith(1);
+    expect(tasksAuditCommand).not.toHaveBeenCalled();
+  });
+
   it("routes tasks flow commands through the TaskFlow handlers", async () => {
     await runCli(["tasks", "flow", "list", "--json", "--status", "blocked"]);
     expectCommandOptions(flowsListCommand, {});
diff --git a/src/cli/program/register.status-health-sessions.ts b/src/cli/program/register.status-health-sessions.ts
index c686a6a83fb..841fe47cabf 100644
--- a/src/cli/program/register.status-health-sessions.ts
+++ b/src/cli/program/register.status-health-sessions.ts
@@ -5,7 +5,7 @@ import { formatDocsLink } from "../../terminal/links.js";
 import { theme } from "../../terminal/theme.js";
 import { runCommandWithRuntime } from "../cli-utils.js";
 import { formatHelpExamples } from "../help-format.js";
-import { parsePositiveIntOrUndefined } from "./helpers.js";
+import { parsePositiveIntOrUndefined, parseStrictPositiveIntOrUndefined } from "./helpers.js";
 
 function resolveVerbose(opts: { verbose?: boolean; debug?: boolean }): boolean {
   return Boolean(opts.verbose || opts.debug);
@@ -73,6 +73,16 @@ function parseTimeoutMs(timeout: unknown): number | null | undefined {
   return parsed;
 }
 
+function parseTasksAuditLimit(limit: unknown): number | null | undefined {
+  const parsed = parseStrictPositiveIntOrUndefined(limit);
+  if (limit !== undefined && parsed === undefined) {
+    defaultRuntime.error("--limit must be a positive integer, for example --limit 25.");
+    defaultRuntime.exit(1);
+    return null;
+  }
+  return parsed;
+}
+
 async function runWithVerboseAndTimeout(
   opts: { verbose?: boolean; debug?: boolean; timeout?: unknown },
   action: (params: { verbose: boolean; timeoutMs: number | undefined }) => Promise<void>,
@@ -444,6 +454,10 @@ export function registerStatusHealthSessionsCommands(program: Command) {
     .option("--limit <n>", "Limit displayed findings")
     .action(async (opts, command) => {
       const parentOpts = command.parent?.opts() as { json?: boolean } | undefined;
+      const limit = parseTasksAuditLimit(opts.limit);
+      if (limit === null) {
+        return;
+      }
       await runCommandWithRuntime(defaultRuntime, async () => {
         const { tasksAuditCommand } = await import("../../commands/tasks.js");
         await tasksAuditCommand(
@@ -464,7 +478,7 @@ export function registerStatusHealthSessionsCommands(program: Command) {
               | "missing_linked_tasks"
               | "blocked_task_missing"
               | undefined,
-            limit: parsePositiveIntOrUndefined(opts.limit),
+            limit,
           },
           defaultRuntime,
         );
diff --git a/src/cli/program/route-args.ts b/src/cli/program/route-args.ts
index aedd2903757..acc5be690be 100644
--- a/src/cli/program/route-args.ts
+++ b/src/cli/program/route-args.ts
@@ -6,6 +6,7 @@ import {
   getVerboseFlag,
   hasFlag,
 } from "../argv.js";
+import { parseStrictPositiveIntOrUndefined } from "./helpers.js";
 
 type OptionalFlagParse = {
   ok: boolean;
@@ -352,8 +353,12 @@ export function parseTasksAuditRouteArgs(argv: string[]) {
   if (!code.ok) {
     return null;
   }
-  const limit = getPositiveIntFlagValue(argv, "--limit");
-  if (limit === null) {
+  const rawLimit = getFlagValue(argv, "--limit");
+  if (rawLimit === null) {
+    return null;
+  }
+  const limit = rawLimit === undefined ? undefined : parseStrictPositiveIntOrUndefined(rawLimit);
+  if (rawLimit !== undefined && limit === undefined) {
     return null;
   }
   return {
diff --git a/src/cli/program/routes.test.ts b/src/cli/program/routes.test.ts
index 74f9a9a7e69..daef522a02a 100644
--- a/src/cli/program/routes.test.ts
+++ b/src/cli/program/routes.test.ts
@@ -592,6 +592,10 @@ describe("program routes", () => {
       ["tasks", "audit"],
       ["node", "openclaw", "tasks", "audit", "--json", "--limit"],
     );
+    await expectRunFalse(
+      ["tasks", "audit"],
+      ["node", "openclaw", "tasks", "audit", "--json", "--limit", "5abc"],
+    );
     await expectRunFalse(
       ["tasks", "audit"],
       ["node", "openclaw", "tasks", "audit", "--json", "--unknown"],