diff --git a/AGENTS.md b/AGENTS.md
index 9a54cafed02b..52df01101f6f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -68,6 +68,7 @@ Skills own workflows; root owns hard policy and routing.
 - Config/env surface bar is high; `openclaw.json` and environment variables are already large. Before adding a config option or env var, first prove existing product behavior, provider selection, defaults, or doctor migration cannot solve it. Prefer removing or consolidating config/env options when touching these surfaces. Core supports only the latest config shape; `openclaw doctor --fix` migrates older shipped shapes into the current one.
 - CLI setup flows are public API when external docs, installers, or integrations can copy them. Changes to `openclaw onboard`, `openclaw configure`, their documented flags, non-interactive behavior, or generated config shape are compatibility-sensitive API contract changes; prefer additive flags/aliases, deprecation windows, and backward-preserving migrations over breaking existing snippets.
 - Fix shape: default to clean bounded refactor, not smallest patch. Move ownership to right boundary; delete stale abstractions, duplicate policy, dead branches, wrappers, fallback stacks.
+- New binary fallible-operation results use `Result` from `@openclaw/normalization-core/result`; domain-rich outcomes keep named discriminated unions.
 - Fix observed local failures with generic product rules; do not hardcode names, ids, log phrases, or user examples in prod code unless they are an explicit contract.
 - Tests may use observed examples, but prod literals need a short contract reason.
 - Compatibility is opt-in. "Shipped" means reachable from a release Git tag; main/GitHub/PR/unreleased code is not shipped.
diff --git a/docs/.generated/plugin-sdk-api-baseline.sha256 b/docs/.generated/plugin-sdk-api-baseline.sha256
index f344e06dd687..d553db8097e8 100644
--- a/docs/.generated/plugin-sdk-api-baseline.sha256
+++ b/docs/.generated/plugin-sdk-api-baseline.sha256
@@ -1,2 +1,2 @@
-21f63180d1606d450af8d2509c2e12ae7bcb0e92b77429ee35b5d350d4f9a427  plugin-sdk-api-baseline.json
-7ea611a65949cbd82c54a63f3fc1818d88bf6b6515fcb53ef59a911b2ca4a822  plugin-sdk-api-baseline.jsonl
+83cfad05d155e019b7bf2f3278eaa2dca6e59d391f124d8bf5bfc838e870d8dd  plugin-sdk-api-baseline.json
+275ad4b635e76fa209cb8d2d99d7de4225f154306cfb2cb0b0c36c17730e756e  plugin-sdk-api-baseline.jsonl
diff --git a/packages/agent-core/src/harness/agent-harness.ts b/packages/agent-core/src/harness/agent-harness.ts
index 1dfcb89fe2e1..1533af3feadf 100644
--- a/packages/agent-core/src/harness/agent-harness.ts
+++ b/packages/agent-core/src/harness/agent-harness.ts
@@ -1,4 +1,5 @@
 // Agent Core module implements agent harness behavior.
+import { toErrorObject } from "@openclaw/normalization-core/error-coercion";
 import type {
   AssistantMessage,
   ImageContent,
@@ -52,13 +53,7 @@ import type {
   Session,
   Skill,
 } from "./types.js";
-import {
-  AgentHarnessError,
-  BranchSummaryError,
-  CompactionError,
-  SessionError,
-  toError,
-} from "./types.js";
+import { AgentHarnessError, BranchSummaryError, CompactionError, SessionError } from "./types.js";
 
 // CoreAgentHarness coordinates session state, resources, tools, compaction, and
 // streaming callbacks around the lower-level agent loop.
@@ -164,7 +159,7 @@ function normalizeHarnessError(
   if (error instanceof AgentHarnessError) {
     return error;
   }
-  const cause = toError(error);
+  const cause = toErrorObject(error, "Non-Error thrown");
   if (cause instanceof SessionError) {
     return new AgentHarnessError("session", cause.message, cause);
   }
@@ -672,7 +667,7 @@ export class CoreAgentHarness<
           );
         } catch (failureError) {
           const cause = new AggregateError(
-            [toError(error), toError(failureError)],
+            [error, failureError].map((value) => toErrorObject(value, "Non-Error thrown")),
             "Agent run failed and failure reporting failed",
           );
           throw new AgentHarnessError("unknown", cause.message, cause);
@@ -1130,17 +1125,17 @@ export class CoreAgentHarness<
     try {
       await this.emitQueueUpdate();
     } catch (error) {
-      errors.push(toError(error));
+      errors.push(toErrorObject(error, "Non-Error thrown"));
     }
     try {
       await this.waitForIdle();
     } catch (error) {
-      errors.push(toError(error));
+      errors.push(toErrorObject(error, "Non-Error thrown"));
     }
     try {
       await this.emitOwn({ type: "abort", clearedSteer, clearedFollowUp });
     } catch (error) {
-      errors.push(toError(error));
+      errors.push(toErrorObject(error, "Non-Error thrown"));
     }
     if (errors.length > 0) {
       const cause =
diff --git a/packages/agent-core/src/harness/env/nodejs.ts b/packages/agent-core/src/harness/env/nodejs.ts
index ec48400a6171..03dc7cec58da 100644
--- a/packages/agent-core/src/harness/env/nodejs.ts
+++ b/packages/agent-core/src/harness/env/nodejs.ts
@@ -17,6 +17,7 @@ import {
 import { tmpdir } from "node:os";
 import { basename, isAbsolute, join, resolve } from "node:path";
 import { createInterface } from "node:readline";
+import { toErrorObject } from "@openclaw/normalization-core/error-coercion";
 import {
   type ExecutionEnv,
   ExecutionError,
@@ -26,7 +27,6 @@ import {
   type FileKind,
   ok,
   type Result,
-  toError,
 } from "../types.js";
 import { killProcessTree } from "./kill-tree.js";
 
@@ -100,7 +100,7 @@ function toFileError(error: unknown, path?: string): FileError {
   if (error instanceof FileError) {
     return error;
   }
-  const cause = toError(error);
+  const cause = toErrorObject(error, "Non-Error thrown");
   if (isNodeError(error)) {
     const message = error.message;
     switch (error.code) {
@@ -342,7 +342,7 @@ export class NodeExecutionEnv implements ExecutionEnv {
           windowsHide: true,
         });
       } catch (error) {
-        const cause = toError(error);
+        const cause = toErrorObject(error, "Non-Error thrown");
         settle(err(new ExecutionError("spawn_error", cause.message, cause)));
         return;
       }
@@ -373,7 +373,7 @@ export class NodeExecutionEnv implements ExecutionEnv {
         try {
           options?.onStdout?.(chunk);
         } catch (error) {
-          const cause = toError(error);
+          const cause = toErrorObject(error, "Non-Error thrown");
           callbackError = new ExecutionError("callback_error", cause.message, cause);
           onAbort();
         }
@@ -383,7 +383,7 @@ export class NodeExecutionEnv implements ExecutionEnv {
         try {
           options?.onStderr?.(chunk);
         } catch (error) {
-          const cause = toError(error);
+          const cause = toErrorObject(error, "Non-Error thrown");
           callbackError = new ExecutionError("callback_error", cause.message, cause);
           onAbort();
         }
diff --git a/packages/agent-core/src/harness/session/jsonl-storage.ts b/packages/agent-core/src/harness/session/jsonl-storage.ts
index 2c6b12fb5b08..eef111dd7e1f 100644
--- a/packages/agent-core/src/harness/session/jsonl-storage.ts
+++ b/packages/agent-core/src/harness/session/jsonl-storage.ts
@@ -1,4 +1,5 @@
 // Agent Core module implements jsonl storage behavior.
+import { toErrorObject } from "@openclaw/normalization-core/error-coercion";
 import type {
   FileError,
   FileSystem,
@@ -6,7 +7,7 @@ import type {
   Result,
   SessionTreeEntry,
 } from "../types.js";
-import { SessionError, toError } from "../types.js";
+import { SessionError } from "../types.js";
 import {
   appendParentIdAfterEntry,
   BaseSessionStorage,
@@ -69,7 +70,11 @@ function parseHeaderLine(line: string, filePath: string): SessionHeader {
   try {
     parsed = JSON.parse(line);
   } catch (error) {
-    throw invalidSession(filePath, "first line is not a valid session header", toError(error));
+    throw invalidSession(
+      filePath,
+      "first line is not a valid session header",
+      toErrorObject(error, "Non-Error thrown"),
+    );
   }
   if (!isRecord(parsed)) {
     throw invalidSession(filePath, "first line is not a valid session header");
@@ -110,7 +115,12 @@ function parseEntryLine(line: string, filePath: string, lineNumber: number): Ses
   try {
     parsed = JSON.parse(line);
   } catch (error) {
-    throw invalidEntry(filePath, lineNumber, "is not valid JSON", toError(error));
+    throw invalidEntry(
+      filePath,
+      lineNumber,
+      "is not valid JSON",
+      toErrorObject(error, "Non-Error thrown"),
+    );
   }
   if (!isRecord(parsed)) {
     throw invalidEntry(filePath, lineNumber, "is not a valid session entry");
diff --git a/packages/agent-core/src/harness/types.test.ts b/packages/agent-core/src/harness/types.test.ts
new file mode 100644
index 000000000000..13d22894cf6b
--- /dev/null
+++ b/packages/agent-core/src/harness/types.test.ts
@@ -0,0 +1,13 @@
+import { describe, expect, it } from "vitest";
+import { toError } from "./types.js";
+
+describe("toError", () => {
+  it("preserves the shipped facade semantics", () => {
+    const thrown = { code: "E_TEST", detail: "structured" };
+
+    const error = toError(thrown);
+
+    expect(error.message).toBe('{"code":"E_TEST","detail":"structured"}');
+    expect(error).not.toHaveProperty("cause");
+  });
+});
diff --git a/packages/agent-core/src/harness/types.ts b/packages/agent-core/src/harness/types.ts
index cba34e3a0220..8317ed09743f 100644
--- a/packages/agent-core/src/harness/types.ts
+++ b/packages/agent-core/src/harness/types.ts
@@ -1,4 +1,5 @@
 // Agent Core type module defines shared TypeScript contracts.
+import type { Result } from "@openclaw/normalization-core/result";
 import type {
   ImageContent,
   Model,
@@ -11,20 +12,13 @@ import type { AgentEvent, AgentMessage, AgentTool, QueueMode, ThinkingLevel } fr
 import type { AgentCoreCompletionRuntimeDeps, AgentCoreRuntimeDeps } from "../runtime-deps.js";
 import type { Session } from "./session/session.js";
 
-/** Result of a fallible operation. Expected failures are returned as `ok: false` instead of thrown. */
-export type Result<TValue, TError> = { ok: true; value: TValue } | { ok: false; error: TError };
+export { err, ok } from "@openclaw/normalization-core/result";
+export type { Result } from "@openclaw/normalization-core/result";
 
-/** Create a successful {@link Result}. */
-export function ok<TValue, TError>(value: TValue): Result<TValue, TError> {
-  return { ok: true, value };
-}
-
-/** Create a failed {@link Result}. */
-export function err<TValue, TError>(error: TError): Result<TValue, TError> {
-  return { ok: false, error };
-}
-
-/** Normalize unknown thrown values into Error instances before using them as typed error causes. */
+/**
+ * @deprecated Use `toErrorObject` from `@openclaw/normalization-core/error-coercion`.
+ * Kept through the next major release for the shipped agent-core plugin API.
+ */
 export function toError(error: unknown): Error {
   if (error instanceof Error) {
     return error;
diff --git a/packages/normalization-core/package.json b/packages/normalization-core/package.json
index ce954d121bd5..eab642def161 100644
--- a/packages/normalization-core/package.json
+++ b/packages/normalization-core/package.json
@@ -39,6 +39,11 @@
       "import": "./dist/record-coerce.mjs",
       "default": "./dist/record-coerce.mjs"
     },
+    "./result": {
+      "types": "./dist/result.d.mts",
+      "import": "./dist/result.mjs",
+      "default": "./dist/result.mjs"
+    },
     "./string-coerce": {
       "types": "./dist/string-coerce.d.mts",
       "import": "./dist/string-coerce.mjs",
@@ -56,6 +61,6 @@
     }
   },
   "scripts": {
-    "build": "tsdown src/index.ts src/boolean-coercion.ts src/error-coercion.ts src/expect.ts src/number-coercion.ts src/record-coerce.ts src/string-coerce.ts src/string-normalization.ts src/utf16-slice.ts --no-config --platform node --format esm --dts --out-dir dist --clean"
+    "build": "tsdown src/index.ts src/boolean-coercion.ts src/error-coercion.ts src/expect.ts src/number-coercion.ts src/record-coerce.ts src/result.ts src/string-coerce.ts src/string-normalization.ts src/utf16-slice.ts --no-config --platform node --format esm --dts --out-dir dist --clean"
   }
 }
diff --git a/packages/normalization-core/src/result.test.ts b/packages/normalization-core/src/result.test.ts
new file mode 100644
index 000000000000..3ceb70fdd779
--- /dev/null
+++ b/packages/normalization-core/src/result.test.ts
@@ -0,0 +1,9 @@
+import { describe, expect, it } from "vitest";
+import { err, ok } from "./result.js";
+
+describe("Result constructors", () => {
+  it("creates discriminated success and failure arms", () => {
+    expect(ok("value")).toEqual({ ok: true, value: "value" });
+    expect(err("failure")).toEqual({ ok: false, error: "failure" });
+  });
+});
diff --git a/packages/normalization-core/src/result.ts b/packages/normalization-core/src/result.ts
new file mode 100644
index 000000000000..cde91554f29a
--- /dev/null
+++ b/packages/normalization-core/src/result.ts
@@ -0,0 +1,12 @@
+/** Result of a fallible operation. Expected failures use the `ok: false` arm. */
+export type Result<TValue, TError> = { ok: true; value: TValue } | { ok: false; error: TError };
+
+/** Create a successful {@link Result}. */
+export function ok<TValue, TError>(value: TValue): Result<TValue, TError> {
+  return { ok: true, value };
+}
+
+/** Create a failed {@link Result}. */
+export function err<TValue, TError>(error: TError): Result<TValue, TError> {
+  return { ok: false, error };
+}
diff --git a/src/agents/code-mode.ts b/src/agents/code-mode.ts
index caec2f7df3a7..f682df365fcb 100644
--- a/src/agents/code-mode.ts
+++ b/src/agents/code-mode.ts
@@ -11,6 +11,7 @@ import {
   resolveExpiresAtMsFromDurationSeconds,
 } from "@openclaw/normalization-core/number-coercion";
 import { isRecord } from "@openclaw/normalization-core/record-coerce";
+import type { Result } from "@openclaw/normalization-core/result";
 import { uniqueValues } from "@openclaw/normalization-core/string-normalization";
 import { Type } from "typebox";
 import type { OpenClawConfig } from "../config/types.openclaw.js";
@@ -97,12 +98,7 @@ type PendingBridgeRequest = {
   args: unknown[];
 };
 
-type SettledBridgeRequest = {
-  id: string;
-  ok: boolean;
-  value?: unknown;
-  error?: string;
-};
+type SettledBridgeRequest = { id: string } & Result<unknown, string>;
 
 type PendingBridgeState = PendingBridgeRequest & {
   promise: Promise<SettledBridgeRequest>;
diff --git a/src/agents/code-mode.worker.ts b/src/agents/code-mode.worker.ts
index 724323a5d5ce..78c50f5da175 100644
--- a/src/agents/code-mode.worker.ts
+++ b/src/agents/code-mode.worker.ts
@@ -6,6 +6,7 @@ import { readFile } from "node:fs/promises";
 import { createRequire } from "node:module";
 import { parentPort, workerData } from "node:worker_threads";
 import { isRecord } from "@openclaw/normalization-core/record-coerce";
+import type { Result } from "@openclaw/normalization-core/result";
 import { EvalFlags, Intrinsics, JSException, QuickJS, type JSValueHandle } from "quickjs-wasi";
 import type { CodeModeApiVirtualFile } from "./code-mode-namespaces.js";
 const require = createRequire(import.meta.url);
@@ -27,12 +28,7 @@ type PendingBridgeRequest = {
   args: unknown[];
 };
 
-type SettledBridgeRequest = {
-  id: string;
-  ok: boolean;
-  value?: unknown;
-  error?: string;
-};
+type SettledBridgeRequest = { id: string } & Result<unknown, string>;
 
 type SerializedCodeModeNamespaceValue =
   | { kind: "array"; items: SerializedCodeModeNamespaceValue[] }
diff --git a/src/agents/tool-search.ts b/src/agents/tool-search.ts
index 06dd65db793d..2dbfd3098943 100644
--- a/src/agents/tool-search.ts
+++ b/src/agents/tool-search.ts
@@ -6,6 +6,7 @@
 import { spawn } from "node:child_process";
 import os from "node:os";
 import { isRecord } from "@openclaw/normalization-core/record-coerce";
+import type { Result } from "@openclaw/normalization-core/result";
 import {
   normalizeStringEntries,
   uniqueStrings,
@@ -161,13 +162,7 @@ type CodeModeChildMessage =
   | { type: "log"; items?: unknown[] }
   | { type: "bridge"; id?: unknown; method?: unknown; args?: unknown };
 
-type CodeModeBridgeResultMessage = {
-  type: "bridge-result";
-  id: string;
-  ok: boolean;
-  value?: unknown;
-  error?: string;
-};
+type CodeModeBridgeResultMessage = { type: "bridge-result"; id: string } & Result<unknown, string>;
 
 const TOOL_SEARCH_CODE_MODE_CHILD_SOURCE = String.raw`
 import vm from "node:vm";
diff --git a/src/auto-reply/reply/commands-config.ts b/src/auto-reply/reply/commands-config.ts
index de59a38f3cdd..0d7535d972c7 100644
--- a/src/auto-reply/reply/commands-config.ts
+++ b/src/auto-reply/reply/commands-config.ts
@@ -91,10 +91,10 @@ export const handleConfigCommand: CommandHandler = async (params, allowTextComma
       return missingAdminScope;
     }
     const parsedPath = parseConfigPath(configCommand.path);
-    if (!parsedPath.ok || !parsedPath.path) {
+    if (!parsedPath.ok) {
       return {
         shouldContinue: false,
-        reply: { text: `⚠️ ${parsedPath.error ?? "Invalid path."}` },
+        reply: { text: `⚠️ ${parsedPath.error}` },
       };
     }
     parsedWritePath = parsedPath.path;
@@ -138,10 +138,10 @@ export const handleConfigCommand: CommandHandler = async (params, allowTextComma
     const pathRaw = normalizeOptionalString(configCommand.path);
     if (pathRaw) {
       const parsedPath = parseConfigPath(pathRaw);
-      if (!parsedPath.ok || !parsedPath.path) {
+      if (!parsedPath.ok) {
         return {
           shouldContinue: false,
-          reply: { text: `⚠️ ${parsedPath.error ?? "Invalid path."}` },
+          reply: { text: `⚠️ ${parsedPath.error}` },
         };
       }
       const value = getConfigValueAtPath(parsedBase, parsedPath.path);
@@ -270,10 +270,10 @@ export const handleDebugCommand: CommandHandler = async (params, allowTextComman
     if (!result.ok) {
       return {
         shouldContinue: false,
-        reply: { text: `⚠️ ${result.error ?? "Invalid path."}` },
+        reply: { text: `⚠️ ${result.error}` },
       };
     }
-    if (!result.removed) {
+    if (!result.value) {
       return {
         shouldContinue: false,
         reply: {
@@ -291,19 +291,14 @@ export const handleDebugCommand: CommandHandler = async (params, allowTextComman
     if (!result.ok) {
       return {
         shouldContinue: false,
-        reply: { text: `⚠️ ${result.error ?? "Invalid override."}` },
+        reply: { text: `⚠️ ${result.error}` },
       };
     }
-    const parsedOverridePath = parseConfigPath(debugCommand.path);
-    const valueLabel = parsedOverridePath.path
-      ? formatConfigSetValueLabel({
-          path: parsedOverridePath.path,
-          value: debugCommand.value,
-          uiHints: loadGatewayRuntimeConfigSchema().uiHints,
-        })
-      : typeof debugCommand.value === "string"
-        ? `"${debugCommand.value}"`
-        : JSON.stringify(debugCommand.value);
+    const valueLabel = formatConfigSetValueLabel({
+      path: result.value,
+      value: debugCommand.value,
+      uiHints: loadGatewayRuntimeConfigSchema().uiHints,
+    });
     return {
       shouldContinue: false,
       reply: {
diff --git a/src/auto-reply/reply/commands-gating.test.ts b/src/auto-reply/reply/commands-gating.test.ts
index 64c91a0e73dd..42495b64bb68 100644
--- a/src/auto-reply/reply/commands-gating.test.ts
+++ b/src/auto-reply/reply/commands-gating.test.ts
@@ -127,8 +127,8 @@ vi.mock("../../config/config.js", () => ({
 vi.mock("../../config/runtime-overrides.js", () => ({
   getConfigOverrides: getConfigOverridesMock,
   resetConfigOverrides: vi.fn(),
-  setConfigOverride: vi.fn(() => ({ ok: true })),
-  unsetConfigOverride: vi.fn(() => ({ ok: true, removed: true })),
+  setConfigOverride: vi.fn((pathRaw: string) => ({ ok: true, value: pathRaw.split(".") })),
+  unsetConfigOverride: vi.fn(() => ({ ok: true, value: true })),
 }));
 
 vi.mock("../../config/runtime-schema.js", async () => {
diff --git a/src/cli/daemon-cli/status.gather.ts b/src/cli/daemon-cli/status.gather.ts
index 671cfcaceab9..07553e95e1f9 100644
--- a/src/cli/daemon-cli/status.gather.ts
+++ b/src/cli/daemon-cli/status.gather.ts
@@ -581,7 +581,7 @@ export async function gatherDaemonStatus(
       .catch((err: unknown) => ({ status: "unknown", detail: String(err) })),
   ]);
   const restartHandoff = opts.deep ? readGatewayRestartHandoffSync(serviceEnv) : null;
-  const configAudit = command
+  const configAudit: ServiceConfigAudit = command
     ? await loadServiceAuditModule().then(({ auditGatewayServiceConfig }) =>
         auditGatewayServiceConfig({
           env: process.env,
diff --git a/src/config/config-misc.test.ts b/src/config/config-misc.test.ts
index 1f894a04dca6..5d5c50fdd3db 100644
--- a/src/config/config-misc.test.ts
+++ b/src/config/config-misc.test.ts
@@ -1254,7 +1254,7 @@ describe("config paths", () => {
   it("sets, gets, and unsets nested values", () => {
     const root: Record<string, unknown> = {};
     const parsed = parseConfigPath("foo.bar");
-    if (!parsed.ok || !parsed.path) {
+    if (!parsed.ok) {
       throw new Error("path parse failed");
     }
     setConfigValueAtPath(root, parsed.path, 123);
diff --git a/src/config/config-paths.ts b/src/config/config-paths.ts
index 5fcd5a7bb0a9..292e00decd1f 100644
--- a/src/config/config-paths.ts
+++ b/src/config/config-paths.ts
@@ -19,11 +19,9 @@ function setOwnConfigProperty(node: PathNode, key: string, value: unknown): void
 }
 
 /** Parses CLI/config dot-notation paths and rejects unsafe object-key segments. */
-export function parseConfigPath(raw: string): {
-  ok: boolean;
-  path?: string[];
-  error?: string;
-} {
+export function parseConfigPath(
+  raw: string,
+): { ok: true; path: string[] } | { ok: false; error: string } {
   const trimmed = raw.trim();
   if (!trimmed) {
     return {
diff --git a/src/config/runtime-overrides.test.ts b/src/config/runtime-overrides.test.ts
index 96aab1245707..5f81479fec72 100644
--- a/src/config/runtime-overrides.test.ts
+++ b/src/config/runtime-overrides.test.ts
@@ -46,8 +46,7 @@ describe("runtime overrides", () => {
   it("unsets overrides and prunes empty branches", () => {
     setConfigOverride("channels.whatsapp.dmPolicy", "open");
     const removed = unsetConfigOverride("channels.whatsapp.dmPolicy");
-    expect(removed.ok).toBe(true);
-    expect(removed.removed).toBe(true);
+    expect(removed).toEqual({ ok: true, value: true });
     expect(Object.keys(getConfigOverrides()).length).toBe(0);
   });
 
diff --git a/src/config/runtime-overrides.ts b/src/config/runtime-overrides.ts
index 2dbd1043c11d..d44bf4ea0cc1 100644
--- a/src/config/runtime-overrides.ts
+++ b/src/config/runtime-overrides.ts
@@ -1,3 +1,4 @@
+import { err, ok, type Result } from "@openclaw/normalization-core/result";
 import { isBlockedObjectKey } from "../infra/prototype-keys.js";
 // Applies runtime-only config overrides without mutating persisted config.
 import { isPlainObject } from "../utils.js";
@@ -56,37 +57,23 @@ export function resetConfigOverrides(): void {
 }
 
 /** Set one runtime override at a parsed config path after sanitizing object values. */
-export function setConfigOverride(
-  pathRaw: string,
-  value: unknown,
-): {
-  ok: boolean;
-  error?: string;
-} {
+export function setConfigOverride(pathRaw: string, value: unknown): Result<string[], string> {
   const parsed = parseConfigPath(pathRaw);
-  if (!parsed.ok || !parsed.path) {
-    return { ok: false, error: parsed.error ?? "Invalid path." };
+  if (!parsed.ok) {
+    return err(parsed.error);
   }
   setConfigValueAtPath(overrides, parsed.path, sanitizeOverrideValue(value));
-  return { ok: true };
+  return ok(parsed.path);
 }
 
 /** Remove one runtime override path and report whether an override was present. */
-export function unsetConfigOverride(pathRaw: string): {
-  ok: boolean;
-  removed: boolean;
-  error?: string;
-} {
+export function unsetConfigOverride(pathRaw: string): Result<boolean, string> {
   const parsed = parseConfigPath(pathRaw);
-  if (!parsed.ok || !parsed.path) {
-    return {
-      ok: false,
-      removed: false,
-      error: parsed.error ?? "Invalid path.",
-    };
+  if (!parsed.ok) {
+    return err(parsed.error);
   }
   const removed = unsetConfigValueAtPath(overrides, parsed.path);
-  return { ok: true, removed };
+  return ok(removed);
 }
 
 /** Merge the current runtime overrides over a loaded config without mutating the input config. */
diff --git a/src/daemon/launchd-restart-handoff.test.ts b/src/daemon/launchd-restart-handoff.test.ts
index 947b0432a34e..70ef5c67b8c9 100644
--- a/src/daemon/launchd-restart-handoff.test.ts
+++ b/src/daemon/launchd-restart-handoff.test.ts
@@ -53,7 +53,7 @@ describe("scheduleDetachedLaunchdRestartHandoff", () => {
       waitForPid: 9876,
     });
 
-    expect(result).toEqual({ ok: true, pid: 4242 });
+    expect(result).toEqual({ ok: true, value: 4242 });
     expect(spawnMock).toHaveBeenCalledTimes(1);
     const [, args] = requireSpawnCall();
     expect(args[0]).toBe("-c");
diff --git a/src/daemon/launchd-restart-handoff.ts b/src/daemon/launchd-restart-handoff.ts
index 9676974f77b0..2838f1968bf1 100644
--- a/src/daemon/launchd-restart-handoff.ts
+++ b/src/daemon/launchd-restart-handoff.ts
@@ -2,6 +2,7 @@
 import { spawn } from "node:child_process";
 import os from "node:os";
 import path from "node:path";
+import { err, ok, type Result } from "@openclaw/normalization-core/result";
 import { normalizeOptionalString } from "@openclaw/normalization-core/string-coerce";
 import { sanitizeForLog } from "../../packages/terminal-core/src/ansi.js";
 import { formatErrorMessage } from "../infra/errors.js";
@@ -12,11 +13,7 @@ import { renderPosixRestartLogSetup } from "./restart-logs.js";
 
 type LaunchdRestartHandoffMode = "kickstart" | "reload" | "start-after-exit";
 
-type LaunchdRestartHandoffResult = {
-  ok: boolean;
-  pid?: number;
-  detail?: string;
-};
+type LaunchdRestartHandoffResult = Result<number | undefined, string>;
 
 type LaunchdRestartTarget = {
   domain: string;
@@ -249,11 +246,8 @@ export function scheduleDetachedLaunchdRestartHandoff(params: {
       },
     );
     child.unref();
-    return { ok: true, pid: child.pid ?? undefined };
-  } catch (err) {
-    return {
-      ok: false,
-      detail: formatErrorMessage(err),
-    };
+    return ok(child.pid ?? undefined);
+  } catch (error) {
+    return err(formatErrorMessage(error));
   }
 }
diff --git a/src/daemon/launchd.test.ts b/src/daemon/launchd.test.ts
index 3e2e418a01bb..0c51efd40af9 100644
--- a/src/daemon/launchd.test.ts
+++ b/src/daemon/launchd.test.ts
@@ -57,8 +57,8 @@ const state = vi.hoisted(() => ({
 }));
 const launchdRestartHandoffState = vi.hoisted(() => ({
   scheduleDetachedLaunchdRestartHandoff: vi.fn<
-    (_params: unknown) => { ok: boolean; pid?: number; detail?: string }
-  >(() => ({ ok: true, pid: 7331 })),
+    (_params: unknown) => { ok: true; value: number | undefined } | { ok: false; error: string }
+  >(() => ({ ok: true, value: 7331 })),
 }));
 const cleanStaleGatewayProcessesSync = vi.hoisted(() =>
   vi.fn<(port?: number) => number[]>(() => []),
@@ -422,7 +422,7 @@ beforeEach(() => {
   launchdRestartHandoffState.scheduleDetachedLaunchdRestartHandoff.mockReset();
   launchdRestartHandoffState.scheduleDetachedLaunchdRestartHandoff.mockReturnValue({
     ok: true,
-    pid: 7331,
+    value: 7331,
   });
   vi.clearAllMocks();
 });
@@ -2301,7 +2301,7 @@ describe("launchd install", () => {
     const env = createDefaultLaunchdEnv();
     launchdRestartHandoffState.scheduleDetachedLaunchdRestartHandoff.mockReturnValue({
       ok: false,
-      detail: "spawn failed",
+      error: "spawn failed",
     });
 
     await expect(
diff --git a/src/daemon/launchd.ts b/src/daemon/launchd.ts
index 167ee2ab8799..71ce5803ecc0 100644
--- a/src/daemon/launchd.ts
+++ b/src/daemon/launchd.ts
@@ -1286,7 +1286,7 @@ export async function restartLaunchAgent({
       waitForPid: process.pid,
     });
     if (!handoff.ok) {
-      throw new Error(`launchd restart handoff failed: ${handoff.detail ?? "unknown error"}`);
+      throw new Error(`launchd restart handoff failed: ${handoff.error}`);
     }
     writeLaunchAgentActionLine(stdout, "Scheduled LaunchAgent restart", serviceTarget);
     return { outcome: "scheduled" };
diff --git a/src/daemon/service-audit.ts b/src/daemon/service-audit.ts
index b503fb913e9a..df198690da6f 100644
--- a/src/daemon/service-audit.ts
+++ b/src/daemon/service-audit.ts
@@ -47,11 +47,9 @@ export type ServiceConfigIssue = {
   level?: "recommended" | "aggressive";
 };
 
-export type ServiceConfigAudit = {
-  ok: boolean;
-  issues: ServiceConfigIssue[];
-};
-
+export type ServiceConfigAudit =
+  | { ok: true; issues: ServiceConfigIssue[] }
+  | { ok: false; issues: ServiceConfigIssue[] };
 export const SERVICE_AUDIT_CODES = {
   gatewayCommandMissing: "gateway-command-missing",
   gatewayEntrypointMismatch: "gateway-entrypoint-mismatch",
@@ -668,5 +666,5 @@ export async function auditGatewayServiceConfig(params: {
     await auditLaunchdPlist(params.env, issues);
   }
 
-  return { ok: issues.length === 0, issues };
+  return issues.length === 0 ? { ok: true, issues } : { ok: false, issues };
 }
diff --git a/src/plugin-sdk/root-alias.cjs b/src/plugin-sdk/root-alias.cjs
index bb10eb6339a5..775c7eb8a4e0 100644
--- a/src/plugin-sdk/root-alias.cjs
+++ b/src/plugin-sdk/root-alias.cjs
@@ -96,6 +96,7 @@ const workspacePackageAliasEntries = {
         srcFile: "src/record-coerce.ts",
         distFile: "dist/record-coerce.mjs",
       },
+      result: { srcFile: "src/result.ts", distFile: "dist/result.mjs" },
       "string-coerce": {
         srcFile: "src/string-coerce.ts",
         distFile: "dist/string-coerce.mjs",
diff --git a/src/plugins/contracts/plugin-sdk-root-alias.test.ts b/src/plugins/contracts/plugin-sdk-root-alias.test.ts
index 5067381d17a9..985acb9cf97a 100644
--- a/src/plugins/contracts/plugin-sdk-root-alias.test.ts
+++ b/src/plugins/contracts/plugin-sdk-root-alias.test.ts
@@ -519,6 +519,7 @@ describe("plugin-sdk root alias", () => {
         "src",
         "number-coercion.ts",
       ),
+      result: path.join(packageRoot, "packages", "normalization-core", "src", "result.ts"),
       retry: path.join(packageRoot, "packages", "retry", "src", "index.ts"),
     };
     const lazyModule = loadRootAliasWithStubs({
@@ -535,6 +536,7 @@ describe("plugin-sdk root alias", () => {
     expect(aliasMap["@openclaw/normalization-core/number-coercion"]).toBe(
       sourcePaths.numberCoercion,
     );
+    expect(aliasMap["@openclaw/normalization-core/result"]).toBe(sourcePaths.result);
     expect(aliasMap["@openclaw/retry"]).toBe(sourcePaths.retry);
   });
 
@@ -592,6 +594,7 @@ describe("plugin-sdk root alias", () => {
       "@openclaw/normalization-core/error-coercion",
       "@openclaw/normalization-core/number-coercion",
       "@openclaw/normalization-core/record-coerce",
+      "@openclaw/normalization-core/result",
       "@openclaw/normalization-core/string-coerce",
       "@openclaw/normalization-core/string-normalization",
       "@openclaw/normalization-core/utf16-slice",
diff --git a/src/plugins/loader.ts b/src/plugins/loader.ts
index cee5dee7a983..243fb6bec648 100644
--- a/src/plugins/loader.ts
+++ b/src/plugins/loader.ts
@@ -2,6 +2,7 @@
 import { createHash } from "node:crypto";
 import fs from "node:fs";
 import path from "node:path";
+import { err as resultError, ok, type Result } from "@openclaw/normalization-core/result";
 import { normalizeLowercaseStringOrEmpty } from "@openclaw/normalization-core/string-coerce";
 import { clearAgentHarnesses } from "../agents/harness/registry.js";
 import { resolveConfigEnvVars } from "../config/env-substitution.js";
@@ -1344,11 +1345,10 @@ function validatePluginConfig(params: {
   schema?: Record<string, unknown>;
   cacheKey?: string;
   value?: unknown;
-}): { ok: boolean; value?: Record<string, unknown>; errors?: string[] } {
-  const value = params.value;
-  const schema = params.schema;
+}): Result<Record<string, unknown> | undefined, string[]> {
+  const { schema, value } = params;
   if (!schema) {
-    return { ok: true, value: value as Record<string, unknown> | undefined };
+    return ok(value as Record<string, unknown> | undefined);
   }
   if (isEmptyPluginConfigJsonSchema(schema)) {
     if (
@@ -1358,12 +1358,12 @@ function validatePluginConfig(params: {
         !Array.isArray(value) &&
         Object.keys(value).length === 0)
     ) {
-      return { ok: true, value: {} };
+      return ok({});
     }
     if (!value || typeof value !== "object" || Array.isArray(value)) {
-      return { ok: false, errors: ["<root>: must be object"] };
+      return resultError(["<root>: must be object"]);
     }
-    return { ok: false, errors: ["<root>: config must be empty"] };
+    return resultError(["<root>: config must be empty"]);
   }
   const cacheKey = params.cacheKey ?? JSON.stringify(schema);
   const result = validateJsonSchemaValue({
@@ -1373,9 +1373,9 @@ function validatePluginConfig(params: {
     applyDefaults: true,
   });
   if (result.ok) {
-    return { ok: true, value: result.value as Record<string, unknown> | undefined };
+    return ok(result.value as Record<string, unknown> | undefined);
   }
-  return { ok: false, errors: result.errors.map((error) => error.text) };
+  return resultError(result.errors.map((error) => error.text));
 }
 
 function isEmptyPluginConfigJsonSchema(schema: Record<string, unknown>): boolean {
@@ -2110,10 +2110,8 @@ export function loadOpenClawPlugins(options: PluginLoadOptions = {}): PluginRegi
       });
 
       if (!validatedConfig.ok) {
-        logger.error(
-          `[plugins] ${record.id} invalid config: ${validatedConfig.errors?.join(", ")}`,
-        );
-        pushPluginLoadError(`invalid config: ${validatedConfig.errors?.join(", ")}`);
+        logger.error(`[plugins] ${record.id} invalid config: ${validatedConfig.error.join(", ")}`);
+        pushPluginLoadError(`invalid config: ${validatedConfig.error.join(", ")}`);
         continue;
       }
 
@@ -2871,8 +2869,8 @@ export async function loadOpenClawPluginCliRegistry(
       value: entry?.config,
     });
     if (!validatedConfig.ok) {
-      logger.error(`[plugins] ${record.id} invalid config: ${validatedConfig.errors?.join(", ")}`);
-      pushPluginLoadError(`invalid config: ${validatedConfig.errors?.join(", ")}`);
+      logger.error(`[plugins] ${record.id} invalid config: ${validatedConfig.error.join(", ")}`);
+      pushPluginLoadError(`invalid config: ${validatedConfig.error.join(", ")}`);
       continue;
     }
 
diff --git a/src/plugins/plugin-sdk-native-resolver.test.ts b/src/plugins/plugin-sdk-native-resolver.test.ts
index 3f0b682e8438..a6c0c62d0e55 100644
--- a/src/plugins/plugin-sdk-native-resolver.test.ts
+++ b/src/plugins/plugin-sdk-native-resolver.test.ts
@@ -389,6 +389,7 @@ describe("installOpenClawPluginSdkNativeResolver", () => {
       "normalization-core",
       "boolean-coercion.ts",
     );
+    const resultSource = writeInternalCorePackageSource(root, "normalization-core", "result.ts");
     const mediaCoreSource = writeInternalCorePackageSource(root, "media-core", "mime.ts");
     const markdownCoreSource = writeInternalCorePackageSource(
       root,
@@ -424,6 +425,7 @@ describe("installOpenClawPluginSdkNativeResolver", () => {
 
     expect(installedAliases).toContain("@openclaw/normalization-core/string-coerce");
     expect(installedAliases).toContain("@openclaw/normalization-core/boolean-coercion");
+    expect(installedAliases).toContain("@openclaw/normalization-core/result");
     expect(installedAliases).toContain("@openclaw/media-core/mime");
     expect(installedAliases).toContain("@openclaw/markdown-core/code-spans");
     expect(installedAliases).toContain("@openclaw/ai/internal/retry-after");
@@ -440,6 +442,9 @@ describe("installOpenClawPluginSdkNativeResolver", () => {
         requireFromCoreSource.resolve("@openclaw/normalization-core/boolean-coercion"),
       ),
     ).toBe(fs.realpathSync(booleanCoercionSource));
+    expect(
+      fs.realpathSync(requireFromCoreSource.resolve("@openclaw/normalization-core/result")),
+    ).toBe(fs.realpathSync(resultSource));
     expect(fs.realpathSync(requireFromCoreSource.resolve("@openclaw/media-core/mime"))).toBe(
       fs.realpathSync(mediaCoreSource),
     );
@@ -462,6 +467,7 @@ describe("installOpenClawPluginSdkNativeResolver", () => {
     expect(() =>
       requireFromPlugin.resolve("@openclaw/normalization-core/boolean-coercion"),
     ).toThrow();
+    expect(() => requireFromPlugin.resolve("@openclaw/normalization-core/result")).toThrow();
     expect(() => requireFromPlugin.resolve("@openclaw/media-core/mime")).toThrow();
     expect(() => requireFromPlugin.resolve("@openclaw/markdown-core/code-spans")).toThrow();
     expect(() => requireFromPlugin.resolve("@openclaw/ai/internal/retry-after")).toThrow();
diff --git a/src/plugins/plugin-sdk-native-resolver.ts b/src/plugins/plugin-sdk-native-resolver.ts
index 730fefcc33d4..0954d5886719 100644
--- a/src/plugins/plugin-sdk-native-resolver.ts
+++ b/src/plugins/plugin-sdk-native-resolver.ts
@@ -76,6 +76,7 @@ const INTERNAL_CORE_PACKAGE_ALIASES = [
       ["error-coercion", "error-coercion.ts"],
       ["number-coercion", "number-coercion.ts"],
       ["record-coerce", "record-coerce.ts"],
+      ["result", "result.ts"],
       ["string-coerce", "string-coerce.ts"],
       ["string-normalization", "string-normalization.ts"],
       ["utf16-slice", "utf16-slice.ts"],
diff --git a/src/plugins/sdk-alias.test.ts b/src/plugins/sdk-alias.test.ts
index dc94d99a1988..8d5a5f30e37c 100644
--- a/src/plugins/sdk-alias.test.ts
+++ b/src/plugins/sdk-alias.test.ts
@@ -1564,6 +1564,12 @@ describe("plugin sdk alias helpers", () => {
       srcFile: "boolean-coercion.ts",
       distFile: "boolean-coercion.mjs",
     });
+    const normalizationResult = writeWorkspacePackageEntry({
+      root: fixture.root,
+      packageDir: "normalization-core",
+      srcFile: "result.ts",
+      distFile: "result.mjs",
+    });
     const normalizationStringCoerce = writeWorkspacePackageEntry({
       root: fixture.root,
       packageDir: "normalization-core",
@@ -1639,6 +1645,7 @@ describe("plugin sdk alias helpers", () => {
     fs.rmSync(acpCoreRuntimeTypes.distFile);
     fs.rmSync(normalizationCore.distFile);
     fs.rmSync(normalizationBooleanCoercion.distFile);
+    fs.rmSync(normalizationResult.distFile);
     fs.rmSync(normalizationStringCoerce.distFile);
     fs.rmSync(retry.distFile);
     fs.rmSync(terminalCore.distFile);
@@ -1701,6 +1708,9 @@ describe("plugin sdk alias helpers", () => {
     expect(fs.realpathSync(aliases["@openclaw/normalization-core/boolean-coercion"] ?? "")).toBe(
       fs.realpathSync(normalizationBooleanCoercion.srcFile),
     );
+    expect(fs.realpathSync(aliases["@openclaw/normalization-core/result"] ?? "")).toBe(
+      fs.realpathSync(normalizationResult.srcFile),
+    );
     expect(fs.realpathSync(aliases["@openclaw/normalization-core/string-coerce"] ?? "")).toBe(
       fs.realpathSync(normalizationStringCoerce.srcFile),
     );
diff --git a/src/plugins/sdk-alias.ts b/src/plugins/sdk-alias.ts
index eb9abd20dfc7..6503338e3dca 100644
--- a/src/plugins/sdk-alias.ts
+++ b/src/plugins/sdk-alias.ts
@@ -768,62 +768,25 @@ const WORKSPACE_PACKAGE_ALIAS_ENTRIES: WorkspacePackageAliasEntry[] = [
     srcFile: "read-byte-stream-with-limit.ts",
     distFile: "read-byte-stream-with-limit.mjs",
   },
-  {
+  ...(
+    [
+      ["", "index"],
+      ["boolean-coercion", "boolean-coercion"],
+      ["error-coercion", "error-coercion"],
+      ["number-coercion", "number-coercion"],
+      ["record-coerce", "record-coerce"],
+      ["result", "result"],
+      ["string-coerce", "string-coerce"],
+      ["string-normalization", "string-normalization"],
+      ["utf16-slice", "utf16-slice"],
+    ] as const
+  ).map(([subpath, file]) => ({
     packageName: "@openclaw/normalization-core",
     packageDir: "normalization-core",
-    subpath: "",
-    srcFile: "index.ts",
-    distFile: "index.mjs",
-  },
-  {
-    packageName: "@openclaw/normalization-core",
-    packageDir: "normalization-core",
-    subpath: "boolean-coercion",
-    srcFile: "boolean-coercion.ts",
-    distFile: "boolean-coercion.mjs",
-  },
-  {
-    packageName: "@openclaw/normalization-core",
-    packageDir: "normalization-core",
-    subpath: "error-coercion",
-    srcFile: "error-coercion.ts",
-    distFile: "error-coercion.mjs",
-  },
-  {
-    packageName: "@openclaw/normalization-core",
-    packageDir: "normalization-core",
-    subpath: "number-coercion",
-    srcFile: "number-coercion.ts",
-    distFile: "number-coercion.mjs",
-  },
-  {
-    packageName: "@openclaw/normalization-core",
-    packageDir: "normalization-core",
-    subpath: "record-coerce",
-    srcFile: "record-coerce.ts",
-    distFile: "record-coerce.mjs",
-  },
-  {
-    packageName: "@openclaw/normalization-core",
-    packageDir: "normalization-core",
-    subpath: "string-coerce",
-    srcFile: "string-coerce.ts",
-    distFile: "string-coerce.mjs",
-  },
-  {
-    packageName: "@openclaw/normalization-core",
-    packageDir: "normalization-core",
-    subpath: "string-normalization",
-    srcFile: "string-normalization.ts",
-    distFile: "string-normalization.mjs",
-  },
-  {
-    packageName: "@openclaw/normalization-core",
-    packageDir: "normalization-core",
-    subpath: "utf16-slice",
-    srcFile: "utf16-slice.ts",
-    distFile: "utf16-slice.mjs",
-  },
+    subpath,
+    srcFile: `${file}.ts`,
+    distFile: `${file}.mjs`,
+  })),
   {
     packageName: "@openclaw/retry",
     packageDir: "retry",
diff --git a/test/vitest/vitest.shared.config.ts b/test/vitest/vitest.shared.config.ts
index ec6ffd673500..a816def64570 100644
--- a/test/vitest/vitest.shared.config.ts
+++ b/test/vitest/vitest.shared.config.ts
@@ -431,6 +431,10 @@ export const sharedVitestConfig = {
           "record-coerce.ts",
         ),
       },
+      {
+        find: "@openclaw/normalization-core/result",
+        replacement: path.join(repoRoot, "packages", "normalization-core", "src", "result.ts"),
+      },
       {
         find: "@openclaw/normalization-core/string-coerce",
         replacement: path.join(
diff --git a/tsconfig.json b/tsconfig.json
index 0359f0f44db0..8d7a4f83aee7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -145,6 +145,9 @@
       "@openclaw/normalization-core/record-coerce": [
         "./packages/normalization-core/src/record-coerce.ts"
       ],
+      "@openclaw/normalization-core/result": [
+        "./packages/normalization-core/src/result.ts"
+      ],
       "@openclaw/normalization-core/string-coerce": [
         "./packages/normalization-core/src/string-coerce.ts"
       ],
diff --git a/tsdown.config.ts b/tsdown.config.ts
index 8002185b91ca..6f31f93a9d4d 100644
--- a/tsdown.config.ts
+++ b/tsdown.config.ts
@@ -441,37 +441,15 @@ function buildMarkdownCoreDistEntries(): Record<string, string> {
 }
 
 function buildNormalizationCoreDistEntries(): Record<string, string> {
-  return {
-    index: "packages/normalization-core/src/index.ts",
-    "boolean-coercion": "packages/normalization-core/src/boolean-coercion.ts",
-    "error-coercion": "packages/normalization-core/src/error-coercion.ts",
-    "number-coercion": "packages/normalization-core/src/number-coercion.ts",
-    "record-coerce": "packages/normalization-core/src/record-coerce.ts",
-    "string-coerce": "packages/normalization-core/src/string-coerce.ts",
-    "string-normalization": "packages/normalization-core/src/string-normalization.ts",
-    "utf16-slice": "packages/normalization-core/src/utf16-slice.ts",
-  };
+  return buildPackageDistEntriesFromExports("normalization-core");
 }
 
 function buildRetryDistEntries(): Record<string, string> {
-  return {
-    index: "packages/retry/src/index.ts",
-  };
+  return buildPackageDistEntriesFromExports("retry");
 }
 
 function buildMediaCoreDistEntries(): Record<string, string> {
-  return {
-    index: "packages/media-core/src/index.ts",
-    base64: "packages/media-core/src/base64.ts",
-    constants: "packages/media-core/src/constants.ts",
-    "content-length": "packages/media-core/src/content-length.ts",
-    "file-name": "packages/media-core/src/file-name.ts",
-    "inbound-path-policy": "packages/media-core/src/inbound-path-policy.ts",
-    "inline-image-data-url": "packages/media-core/src/inline-image-data-url.ts",
-    "media-source-url": "packages/media-core/src/media-source-url.ts",
-    mime: "packages/media-core/src/mime.ts",
-    "read-byte-stream-with-limit": "packages/media-core/src/read-byte-stream-with-limit.ts",
-  };
+  return buildPackageDistEntriesFromExports("media-core");
 }
 
 function buildPackageDistEntriesFromExports(packageDir: string): Record<string, string> {