diff --git a/src/discord/monitor/provider.ts b/src/discord/monitor/provider.ts
index e61627e1555..0691e084879 100644
--- a/src/discord/monitor/provider.ts
+++ b/src/discord/monitor/provider.ts
@@ -4,7 +4,6 @@ import { Routes } from "discord-api-types/v10";
 import { inspect } from "node:util";
 import type { HistoryEntry } from "../../auto-reply/reply/history.js";
 import type { OpenClawConfig, ReplyToMode } from "../../config/config.js";
-import type { RuntimeEnv } from "../../runtime.js";
 import { resolveTextChunkLimit } from "../../auto-reply/chunk.js";
 import { listNativeCommandSpecsForConfig } from "../../auto-reply/commands-registry.js";
 import { listSkillCommandsForAgents } from "../../auto-reply/skill-commands.js";
@@ -19,6 +18,7 @@ import { danger, logVerbose, shouldLogVerbose, warn } from "../../globals.js";
 import { formatErrorMessage } from "../../infra/errors.js";
 import { createDiscordRetryRunner } from "../../infra/retry-policy.js";
 import { createSubsystemLogger } from "../../logging/subsystem.js";
+import { createNonExitingRuntime, type RuntimeEnv } from "../../runtime.js";
 import { resolveDiscordAccount } from "../accounts.js";
 import { attachDiscordGatewayLogging } from "../gateway-logging.js";
 import { getDiscordGatewayEmitter, waitForDiscordGatewayStop } from "../monitor.gateway.js";
@@ -137,13 +137,7 @@ export async function monitorDiscordProvider(opts: MonitorDiscordOpts = {}) {
     );
   }
 
-  const runtime: RuntimeEnv = opts.runtime ?? {
-    log: console.log,
-    error: console.error,
-    exit: (code: number): never => {
-      throw new Error(`exit ${code}`);
-    },
-  };
+  const runtime: RuntimeEnv = opts.runtime ?? createNonExitingRuntime();
 
   const discordCfg = account.config;
   const dmConfig = discordCfg.dm;
diff --git a/src/imessage/monitor/runtime.ts b/src/imessage/monitor/runtime.ts
index 67ee2e4ac44..004fc2fdd9c 100644
--- a/src/imessage/monitor/runtime.ts
+++ b/src/imessage/monitor/runtime.ts
@@ -1,16 +1,8 @@
-import type { RuntimeEnv } from "../../runtime.js";
 import type { MonitorIMessageOpts } from "./types.js";
+import { createNonExitingRuntime, type RuntimeEnv } from "../../runtime.js";
 
 export function resolveRuntime(opts: MonitorIMessageOpts): RuntimeEnv {
-  return (
-    opts.runtime ?? {
-      log: console.log,
-      error: console.error,
-      exit: (code: number): never => {
-        throw new Error(`exit ${code}`);
-      },
-    }
-  );
+  return opts.runtime ?? createNonExitingRuntime();
 }
 
 export function normalizeAllowList(list?: Array<string | number>) {
diff --git a/src/runtime.ts b/src/runtime.ts
index c8eab74ec6a..1c6fcec30ff 100644
--- a/src/runtime.ts
+++ b/src/runtime.ts
@@ -7,8 +7,22 @@ export type RuntimeEnv = {
   exit: (code: number) => never;
 };
 
+function shouldEmitRuntimeLog(env: NodeJS.ProcessEnv = process.env): boolean {
+  if (env.VITEST !== "true") {
+    return true;
+  }
+  if (env.OPENCLAW_TEST_RUNTIME_LOG === "1") {
+    return true;
+  }
+  const maybeMockedLog = console.log as unknown as { mock?: unknown };
+  return typeof maybeMockedLog.mock === "object";
+}
+
 export const defaultRuntime: RuntimeEnv = {
   log: (...args: Parameters<typeof console.log>) => {
+    if (!shouldEmitRuntimeLog()) {
+      return;
+    }
     clearActiveProgressLine();
     console.log(...args);
   },
@@ -22,3 +36,22 @@ export const defaultRuntime: RuntimeEnv = {
     throw new Error("unreachable"); // satisfies tests when mocked
   },
 };
+
+export function createNonExitingRuntime(): RuntimeEnv {
+  return {
+    log: (...args: Parameters<typeof console.log>) => {
+      if (!shouldEmitRuntimeLog()) {
+        return;
+      }
+      clearActiveProgressLine();
+      console.log(...args);
+    },
+    error: (...args: Parameters<typeof console.error>) => {
+      clearActiveProgressLine();
+      console.error(...args);
+    },
+    exit: (code: number): never => {
+      throw new Error(`exit ${code}`);
+    },
+  };
+}
diff --git a/src/signal/monitor.ts b/src/signal/monitor.ts
index aabe0021b43..85f5cac66d1 100644
--- a/src/signal/monitor.ts
+++ b/src/signal/monitor.ts
@@ -1,12 +1,12 @@
 import type { ReplyPayload } from "../auto-reply/types.js";
 import type { OpenClawConfig } from "../config/config.js";
 import type { SignalReactionNotificationMode } from "../config/types.js";
-import type { RuntimeEnv } from "../runtime.js";
 import { chunkTextWithMode, resolveChunkMode, resolveTextChunkLimit } from "../auto-reply/chunk.js";
 import { DEFAULT_GROUP_HISTORY_LIMIT, type HistoryEntry } from "../auto-reply/reply/history.js";
 import { loadConfig } from "../config/config.js";
 import { waitForTransportReady } from "../infra/transport-ready.js";
 import { saveMediaBuffer } from "../media/store.js";
+import { createNonExitingRuntime, type RuntimeEnv } from "../runtime.js";
 import { normalizeE164 } from "../utils.js";
 import { resolveSignalAccount } from "./accounts.js";
 import { signalCheck, signalRpcRequest } from "./client.js";
@@ -57,15 +57,7 @@ export type MonitorSignalOpts = {
 };
 
 function resolveRuntime(opts: MonitorSignalOpts): RuntimeEnv {
-  return (
-    opts.runtime ?? {
-      log: console.log,
-      error: console.error,
-      exit: (code: number): never => {
-        throw new Error(`exit ${code}`);
-      },
-    }
-  );
+  return opts.runtime ?? createNonExitingRuntime();
 }
 
 function normalizeAllowList(raw?: Array<string | number>): string[] {
diff --git a/src/slack/monitor/provider.ts b/src/slack/monitor/provider.ts
index 6c544655cca..64768ee0ae3 100644
--- a/src/slack/monitor/provider.ts
+++ b/src/slack/monitor/provider.ts
@@ -1,7 +1,6 @@
 import type { IncomingMessage, ServerResponse } from "node:http";
 import SlackBolt from "@slack/bolt";
 import type { SessionScope } from "../../config/sessions.js";
-import type { RuntimeEnv } from "../../runtime.js";
 import type { MonitorSlackOpts } from "./types.js";
 import { resolveTextChunkLimit } from "../../auto-reply/chunk.js";
 import { DEFAULT_GROUP_HISTORY_LIMIT } from "../../auto-reply/reply/history.js";
@@ -10,6 +9,7 @@ import { loadConfig } from "../../config/config.js";
 import { warn } from "../../globals.js";
 import { installRequestBodyLimitGuard } from "../../infra/http-body.js";
 import { normalizeMainKey } from "../../routing/session-key.js";
+import { createNonExitingRuntime, type RuntimeEnv } from "../../runtime.js";
 import { resolveSlackAccount } from "../accounts.js";
 import { resolveSlackWebClientOptions } from "../client.js";
 import { normalizeSlackWebhookPath, registerSlackHttpHandler } from "../http/index.js";
@@ -81,13 +81,7 @@ export async function monitorSlackProvider(opts: MonitorSlackOpts = {}) {
     );
   }
 
-  const runtime: RuntimeEnv = opts.runtime ?? {
-    log: console.log,
-    error: console.error,
-    exit: (code: number): never => {
-      throw new Error(`exit ${code}`);
-    },
-  };
+  const runtime: RuntimeEnv = opts.runtime ?? createNonExitingRuntime();
 
   const slackCfg = account.config;
   const dmConfig = slackCfg.dm;