diff --git a/extensions/arcee/provider-catalog.ts b/extensions/arcee/provider-catalog.ts
index 3b2b5729bd7..4ea840446da 100644
--- a/extensions/arcee/provider-catalog.ts
+++ b/extensions/arcee/provider-catalog.ts
@@ -4,9 +4,7 @@ import { buildArceeModelDefinition, ARCEE_BASE_URL, ARCEE_MODEL_CATALOG } from "
 export const OPENROUTER_BASE_URL = "https://openrouter.ai/api/v1";
 
 function normalizeBaseUrl(baseUrl: string | undefined): string {
-  return String(baseUrl ?? "")
-    .trim()
-    .replace(/\/+$/, "");
+  return (baseUrl ?? "").trim().replace(/\/+$/, "");
 }
 
 export function isArceeOpenRouterBaseUrl(baseUrl: string | undefined): boolean {
diff --git a/extensions/browser/src/browser/pw-tools-core.interactions.ts b/extensions/browser/src/browser/pw-tools-core.interactions.ts
index 133f368b48f..ccf34df5b34 100644
--- a/extensions/browser/src/browser/pw-tools-core.interactions.ts
+++ b/extensions/browser/src/browser/pw-tools-core.interactions.ts
@@ -668,7 +668,7 @@ export async function typeViaPlaywright(opts: {
   ssrfPolicy?: SsrFPolicy;
 }): Promise<void> {
   const resolved = requireRefOrSelector(opts.ref, opts.selector);
-  const text = String(opts.text ?? "");
+  const text = opts.text ?? "";
   const page = await getRestoredPageForTarget(opts);
   const label = resolved.ref ?? resolved.selector!;
   const locator = resolved.ref
diff --git a/extensions/browser/src/cli/browser-cli-state.ts b/extensions/browser/src/cli/browser-cli-state.ts
index 5a688c2486b..78e135ccb1c 100644
--- a/extensions/browser/src/cli/browser-cli-state.ts
+++ b/extensions/browser/src/cli/browser-cli-state.ts
@@ -115,7 +115,7 @@ export function registerBrowserStateCommands(
         if (!headersJsonValue) {
           throw new Error("Missing headers JSON (pass --headers-json or positional JSON argument)");
         }
-        const parsed = JSON.parse(String(headersJsonValue)) as unknown;
+        const parsed = JSON.parse(headersJsonValue) as unknown;
         if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) {
           throw new Error("Headers JSON must be a JSON object");
         }
diff --git a/extensions/chutes/index.ts b/extensions/chutes/index.ts
index c83a282182e..a953882ecda 100644
--- a/extensions/chutes/index.ts
+++ b/extensions/chutes/index.ts
@@ -24,12 +24,12 @@ async function runChutesOAuth(ctx: ProviderAuthContext): Promise<ProviderAuthRes
   const scopes = process.env.CHUTES_OAUTH_SCOPES?.trim() || "openid profile chutes:invoke";
   const clientId =
     process.env.CHUTES_CLIENT_ID?.trim() ||
-    String(
+    (
       await ctx.prompter.text({
         message: "Enter Chutes OAuth client id",
         placeholder: "cid_xxx",
         validate: (value: string) => (value?.trim() ? undefined : "Required"),
-      }),
+      })
     ).trim();
   const clientSecret = normalizeOptionalString(process.env.CHUTES_CLIENT_SECRET);
 
diff --git a/extensions/huggingface/models.ts b/extensions/huggingface/models.ts
index de52b59f7ef..d362995cb17 100644
--- a/extensions/huggingface/models.ts
+++ b/extensions/huggingface/models.ts
@@ -73,7 +73,7 @@ export const HUGGINGFACE_MODEL_CATALOG: ModelDefinitionConfig[] = [
 ];
 
 export function isHuggingfacePolicyLocked(modelRef: string): boolean {
-  const ref = String(modelRef).trim();
+  const ref = modelRef.trim();
   return HUGGINGFACE_POLICY_SUFFIXES.some((suffix) => ref.endsWith(`:${suffix}`) || ref === suffix);
 }
 
diff --git a/extensions/llm-task/src/llm-task-tool.ts b/extensions/llm-task/src/llm-task-tool.ts
index eb3a2e283d0..01e17ddc74d 100644
--- a/extensions/llm-task/src/llm-task-tool.ts
+++ b/extensions/llm-task/src/llm-task-tool.ts
@@ -124,7 +124,7 @@ export function createLlmTaskTool(api: OpenClawPluginApi) {
       const modelKey = toModelKey(provider, model);
       if (!provider || !model || !modelKey) {
         throw new Error(
-          `provider/model could not be resolved (provider=${String(provider ?? "")}, model=${String(model ?? "")})`,
+          `provider/model could not be resolved (provider=${provider ?? ""}, model=${model ?? ""})`,
         );
       }
 
diff --git a/extensions/matrix/src/matrix/accounts.ts b/extensions/matrix/src/matrix/accounts.ts
index 343e13e6bd1..48af02ed1d0 100644
--- a/extensions/matrix/src/matrix/accounts.ts
+++ b/extensions/matrix/src/matrix/accounts.ts
@@ -179,7 +179,7 @@ export function resolveMatrixAccount(params: {
           userId: authView.userId || "",
         })
       : false;
-  const configured = hasHomeserver && (hasAccessToken || hasPasswordAuth || Boolean(hasStored));
+  const configured = hasHomeserver && (hasAccessToken || hasPasswordAuth || hasStored);
   return {
     accountId,
     enabled,
diff --git a/extensions/matrix/src/matrix/monitor/handler.ts b/extensions/matrix/src/matrix/monitor/handler.ts
index 009977f1736..d508a613653 100644
--- a/extensions/matrix/src/matrix/monitor/handler.ts
+++ b/extensions/matrix/src/matrix/monitor/handler.ts
@@ -1245,7 +1245,7 @@ export function createMatrixRoomMessageHandler(params: MatrixMonitorHandlerParam
             isDirect: isDirectMessage,
             isGroup: isRoom,
             isMentionableGroup: isRoom,
-            requireMention: Boolean(shouldRequireMention),
+            requireMention: shouldRequireMention,
             canDetectMention,
             effectiveWasMentioned: wasMentioned || shouldBypassMention,
             shouldBypassMention,
diff --git a/extensions/matrix/src/outbound.ts b/extensions/matrix/src/outbound.ts
index 0adb03ca5ad..f384355524e 100644
--- a/extensions/matrix/src/outbound.ts
+++ b/extensions/matrix/src/outbound.ts
@@ -62,8 +62,7 @@ export const matrixOutbound: ChannelOutboundAdapter = {
     };
   },
   sendPoll: async ({ cfg, to, poll, threadId, accountId }) => {
-    const resolvedThreadId =
-      threadId !== undefined && threadId !== null ? String(threadId) : undefined;
+    const resolvedThreadId = threadId !== undefined && threadId !== null ? threadId : undefined;
     const result = await sendPollMatrix(to, poll, {
       cfg,
       threadId: resolvedThreadId,
diff --git a/extensions/msteams/src/channel.ts b/extensions/msteams/src/channel.ts
index 7d22395eb2a..613f6a5df3c 100644
--- a/extensions/msteams/src/channel.ts
+++ b/extensions/msteams/src/channel.ts
@@ -319,10 +319,10 @@ export const msteamsPlugin: ChannelPlugin<ResolvedMSTeamsAccount, ProbeMSTeamsRe
           const graph = teamsProbe?.graph;
           if (graph) {
             const roles = Array.isArray(graph.roles)
-              ? graph.roles.map((role) => String(role).trim()).filter(Boolean)
+              ? graph.roles.map((role) => role.trim()).filter(Boolean)
               : [];
             const scopes = Array.isArray(graph.scopes)
-              ? graph.scopes.map((scope) => String(scope).trim()).filter(Boolean)
+              ? graph.scopes.map((scope) => scope.trim()).filter(Boolean)
               : [];
             const formatPermission = (permission: string) => {
               const hint = TEAMS_GRAPH_PERMISSION_HINTS[permission];
diff --git a/extensions/msteams/src/monitor-handler/message-handler.ts b/extensions/msteams/src/monitor-handler/message-handler.ts
index 8351ac91ff6..ac7988243e9 100644
--- a/extensions/msteams/src/monitor-handler/message-handler.ts
+++ b/extensions/msteams/src/monitor-handler/message-handler.ts
@@ -513,7 +513,7 @@ export function createMSTeamsMessageHandler(deps: MSTeamsMessageHandlerDeps) {
       },
       policy: {
         isGroup: !isDirectMessage,
-        requireMention: Boolean(requireMention),
+        requireMention,
         allowTextCommands: false,
         hasControlCommand: false,
         commandAuthorized: false,
diff --git a/extensions/openrouter/stream.ts b/extensions/openrouter/stream.ts
index 27900222175..d0f196d5487 100644
--- a/extensions/openrouter/stream.ts
+++ b/extensions/openrouter/stream.ts
@@ -16,7 +16,7 @@ function injectOpenRouterRouting(
       baseStreamFn ??
       ((nextModel) => {
         throw new Error(
-          `OpenRouter routing wrapper requires an underlying streamFn for ${String(nextModel.id)}.`,
+          `OpenRouter routing wrapper requires an underlying streamFn for ${nextModel.id}.`,
         );
       })
     )(
diff --git a/extensions/qa-lab/src/harness-runtime.ts b/extensions/qa-lab/src/harness-runtime.ts
index ac3cfc807b6..a1d228702ca 100644
--- a/extensions/qa-lab/src/harness-runtime.ts
+++ b/extensions/qa-lab/src/harness-runtime.ts
@@ -44,7 +44,7 @@ export function createQaRunnerRuntime(): PluginRuntime {
         }) {
           sessions.set(sessionKey, {
             sessionKey,
-            body: String(ctx.BodyForAgent ?? ctx.Body ?? ""),
+            body: ctx.BodyForAgent ?? ctx.Body ?? "",
           });
         },
       },
@@ -66,7 +66,7 @@ export function createQaRunnerRuntime(): PluginRuntime {
           dispatcherOptions: { deliver: (payload: { text: string }) => Promise<void> };
         }) {
           await dispatcherOptions.deliver({
-            text: `qa-echo: ${String(ctx.BodyForAgent ?? ctx.Body ?? "")}`,
+            text: `qa-echo: ${ctx.BodyForAgent ?? ctx.Body ?? ""}`,
           });
         },
       },
diff --git a/extensions/qa-lab/src/live-transports/matrix/matrix-live.runtime.ts b/extensions/qa-lab/src/live-transports/matrix/matrix-live.runtime.ts
index e75e2ee981e..fdf4ab7bec6 100644
--- a/extensions/qa-lab/src/live-transports/matrix/matrix-live.runtime.ts
+++ b/extensions/qa-lab/src/live-transports/matrix/matrix-live.runtime.ts
@@ -205,11 +205,11 @@ function isMatrixAccountReady(entry?: {
   restartPending?: boolean;
   running?: boolean;
 }): boolean {
-  return Boolean(
+  return (
     entry?.running === true &&
     entry.connected === true &&
     entry.restartPending !== true &&
-    (entry.healthState === undefined || entry.healthState === "healthy"),
+    (entry.healthState === undefined || entry.healthState === "healthy")
   );
 }
 
diff --git a/extensions/qa-lab/src/suite.ts b/extensions/qa-lab/src/suite.ts
index d077cbe1055..c662aa0c0cf 100644
--- a/extensions/qa-lab/src/suite.ts
+++ b/extensions/qa-lab/src/suite.ts
@@ -827,7 +827,7 @@ async function resolveGeneratedImagePath(params: {
         );
         for (let index = requests.length - 1; index >= 0; index -= 1) {
           const request = requests[index];
-          if (!String(request.allInputText ?? "").includes(params.promptSnippet)) {
+          if (!(request.allInputText ?? "").includes(params.promptSnippet)) {
             continue;
           }
           const mediaPath = extractMediaPathFromText(request.toolOutput);
@@ -1055,7 +1055,7 @@ async function runAgentPrompt(
   const waited = await waitForAgentRun(env, started.runId!, params.timeoutMs ?? 30_000);
   if (waited.status !== "ok") {
     throw new Error(
-      `agent.wait returned ${String(waited.status ?? "unknown")}: ${waited.error ?? "no error"}`,
+      `agent.wait returned ${waited.status ?? "unknown"}: ${waited.error ?? "no error"}`,
     );
   }
   return {
diff --git a/extensions/slack/src/monitor/message-handler/prepare.ts b/extensions/slack/src/monitor/message-handler/prepare.ts
index d1a6e917d39..2a753771514 100644
--- a/extensions/slack/src/monitor/message-handler/prepare.ts
+++ b/extensions/slack/src/monitor/message-handler/prepare.ts
@@ -508,7 +508,7 @@ export async function prepareSlackMessage(params: {
     },
     policy: {
       isGroup: isRoom,
-      requireMention: Boolean(shouldRequireMention),
+      requireMention: shouldRequireMention,
       allowedImplicitMentionKinds: ctx.threadRequireExplicitMention ? [] : undefined,
       allowTextCommands,
       hasControlCommand: hasControlCommandInMessage,
@@ -576,7 +576,7 @@ export async function prepareSlackMessage(params: {
         isDirect: isDirectMessage,
         isGroup: isRoomish,
         isMentionableGroup: isRoom,
-        requireMention: Boolean(shouldRequireMention),
+        requireMention: shouldRequireMention,
         canDetectMention,
         effectiveWasMentioned,
         shouldBypassMention: mentionDecision.shouldBypassMention,
diff --git a/extensions/slack/src/setup-core.ts b/extensions/slack/src/setup-core.ts
index beedcd9cf27..d33f63a42ad 100644
--- a/extensions/slack/src/setup-core.ts
+++ b/extensions/slack/src/setup-core.ts
@@ -42,7 +42,7 @@ function hasSlackInteractiveRepliesConfig(cfg: OpenClawConfig, accountId: string
   const capabilities = resolveSlackAccount({ cfg, accountId }).config.capabilities;
   if (Array.isArray(capabilities)) {
     return capabilities.some(
-      (entry) => normalizeLowercaseStringOrEmpty(String(entry)) === "interactivereplies",
+      (entry) => normalizeLowercaseStringOrEmpty(entry) === "interactivereplies",
     );
   }
   if (!capabilities || typeof capabilities !== "object") {
@@ -61,7 +61,7 @@ function setSlackInteractiveReplies(
     ? interactiveReplies
       ? [...new Set([...capabilities, "interactiveReplies"])]
       : capabilities.filter(
-          (entry) => normalizeLowercaseStringOrEmpty(String(entry)) !== "interactivereplies",
+          (entry) => normalizeLowercaseStringOrEmpty(entry) !== "interactivereplies",
         )
     : {
         ...((capabilities && typeof capabilities === "object" ? capabilities : {}) as Record<
diff --git a/extensions/tavily/src/tavily-client.ts b/extensions/tavily/src/tavily-client.ts
index 58c1b857fbc..eb1b5310df1 100644
--- a/extensions/tavily/src/tavily-client.ts
+++ b/extensions/tavily/src/tavily-client.ts
@@ -239,7 +239,7 @@ export async function runTavilyExtract(
     ...(Array.isArray(r.images)
       ? {
           images: (r.images as string[]).map((img) =>
-            wrapExternalContent(String(img), { source: "web_fetch", includeWarning: false }),
+            wrapExternalContent(img, { source: "web_fetch", includeWarning: false }),
           ),
         }
       : {}),
diff --git a/extensions/zalo/src/setup-allow-from.ts b/extensions/zalo/src/setup-allow-from.ts
index 9400199bb33..9f0ab6a7b27 100644
--- a/extensions/zalo/src/setup-allow-from.ts
+++ b/extensions/zalo/src/setup-allow-from.ts
@@ -41,7 +41,7 @@ export async function promptZaloAllowFrom(params: {
     placeholder: "123456789",
     initialValue: existingAllowFrom[0] ? String(existingAllowFrom[0]) : undefined,
     validate: (value) => {
-      const raw = String(value ?? "").trim();
+      const raw = (value ?? "").trim();
       if (!raw) {
         return "Required";
       }
@@ -51,7 +51,7 @@ export async function promptZaloAllowFrom(params: {
       return undefined;
     },
   });
-  const normalized = String(entry).trim();
+  const normalized = entry.trim();
   const unique = mergeAllowFromEntries(existingAllowFrom, [normalized]);
 
   if (accountId === DEFAULT_ACCOUNT_ID) {
diff --git a/extensions/zalo/src/setup-surface.ts b/extensions/zalo/src/setup-surface.ts
index a1b5fd320cc..0c3ca81d5e1 100644
--- a/extensions/zalo/src/setup-surface.ts
+++ b/extensions/zalo/src/setup-surface.ts
@@ -200,13 +200,13 @@ export const zaloSetupWizard: ChannelSetupWizard = {
       initialValue: Boolean(resolvedAccount.config.webhookUrl),
     });
     if (wantsWebhook) {
-      const webhookUrl = String(
+      const webhookUrl = (
         await prompter.text({
           message: "Webhook URL (https://...) ",
           initialValue: resolvedAccount.config.webhookUrl,
           validate: (value) =>
             value?.trim()?.startsWith("https://") ? undefined : "HTTPS URL required",
-        }),
+        })
       ).trim();
       const defaultPath = (() => {
         try {
@@ -259,11 +259,11 @@ export const zaloSetupWizard: ChannelSetupWizard = {
         webhookSecretResult.action === "set"
           ? webhookSecretResult.value
           : resolvedAccount.config.webhookSecret;
-      const webhookPath = String(
+      const webhookPath = (
         await prompter.text({
           message: "Webhook path (optional)",
           initialValue: resolvedAccount.config.webhookPath ?? defaultPath,
-        }),
+        })
       ).trim();
       next = setZaloUpdateMode(
         next,