diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0db27f20890..e36109cbb66 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -69,6 +69,7 @@ Docs: https://docs.openclaw.ai
 - CLI/Daemon status TLS probe: use `wss://` and forward local TLS certificate fingerprint for TLS-enabled gateway daemon probes so `openclaw daemon status` works with `gateway.bind=lan` + `gateway.tls.enabled=true`. (#24234) thanks @liuy.
 - Podman/Default bind: change `run-openclaw-podman.sh` default gateway bind from `lan` to `loopback` and document explicit LAN opt-in with Control UI origin configuration. (#27491) thanks @robbyczgw-cla.
 - Daemon/macOS launchd: forward proxy env vars into supervised service environments, keep LaunchAgent `KeepAlive=true` semantics, and harden restart sequencing to `print -> bootout -> wait old pid exit -> bootstrap -> kickstart`. (#27276) thanks @frankekn.
+- Daemon/macOS TLS certs: default LaunchAgent service env `NODE_EXTRA_CA_CERTS` to `/etc/ssl/cert.pem` (while preserving explicit overrides) so HTTPS clients no longer fail with local-issuer errors under launchd. (#27915) Thanks @Lukavyi.
 - Gateway/macOS restart-loop hardening: detect OpenClaw-managed supervisor markers during SIGUSR1 restart handoff, clean stale gateway PIDs before `/restart` launchctl/systemctl triggers, and set LaunchAgent `ThrottleInterval=60` to bound launchd retry storms during lock-release races. Landed from contributor PRs #27655 (@taw0002), #27448 (@Sid-Qin), and #27650 (@kevinWangSheng). (#27605, #27590, #26904, #26736)
 - Models/MiniMax auth header defaults: set `authHeader: true` for both onboarding-generated MiniMax API providers and implicit built-in MiniMax (`minimax`, `minimax-portal`) provider templates so first requests no longer fail with MiniMax `401 authentication_error` due to missing `Authorization` header. Landed from contributor PRs #27622 by @riccoyuanft and #27631 by @kevinWangSheng. (#27600, #15303)
 - Models/Google Antigravity IDs: normalize bare `gemini-3-pro`, `gemini-3.1-pro`, and `gemini-3-1-pro` model IDs to the default `-low` thinking tier so provider requests no longer fail with 404 when the tier suffix is omitted. (#24145) Thanks @byungsker.
diff --git a/src/daemon/service-env.test.ts b/src/daemon/service-env.test.ts
index ef8a64904a8..95dee4ecc1d 100644
--- a/src/daemon/service-env.test.ts
+++ b/src/daemon/service-env.test.ts
@@ -333,12 +333,18 @@ describe("buildServiceEnvironment", () => {
     const env = buildServiceEnvironment({
       env: { HOME: "/home/user" },
       port: 18789,
+      platform: "darwin",
     });
-    if (process.platform === "darwin") {
-      expect(env.NODE_EXTRA_CA_CERTS).toBe("/etc/ssl/cert.pem");
-    } else {
-      expect(env.NODE_EXTRA_CA_CERTS).toBeUndefined();
-    }
+    expect(env.NODE_EXTRA_CA_CERTS).toBe("/etc/ssl/cert.pem");
+  });
+
+  it("does not default NODE_EXTRA_CA_CERTS on non-macOS", () => {
+    const env = buildServiceEnvironment({
+      env: { HOME: "/home/user" },
+      port: 18789,
+      platform: "linux",
+    });
+    expect(env.NODE_EXTRA_CA_CERTS).toBeUndefined();
   });
 
   it("respects user-provided NODE_EXTRA_CA_CERTS over the default", () => {
@@ -388,12 +394,17 @@ describe("buildNodeServiceEnvironment", () => {
   it("defaults NODE_EXTRA_CA_CERTS to system cert bundle on macOS for node services", () => {
     const env = buildNodeServiceEnvironment({
       env: { HOME: "/home/user" },
+      platform: "darwin",
     });
-    if (process.platform === "darwin") {
-      expect(env.NODE_EXTRA_CA_CERTS).toBe("/etc/ssl/cert.pem");
-    } else {
-      expect(env.NODE_EXTRA_CA_CERTS).toBeUndefined();
-    }
+    expect(env.NODE_EXTRA_CA_CERTS).toBe("/etc/ssl/cert.pem");
+  });
+
+  it("does not default NODE_EXTRA_CA_CERTS on non-macOS for node services", () => {
+    const env = buildNodeServiceEnvironment({
+      env: { HOME: "/home/user" },
+      platform: "linux",
+    });
+    expect(env.NODE_EXTRA_CA_CERTS).toBeUndefined();
   });
 
   it("respects user-provided NODE_EXTRA_CA_CERTS for node services", () => {
diff --git a/src/daemon/service-env.ts b/src/daemon/service-env.ts
index 0d15120b683..15c78521348 100644
--- a/src/daemon/service-env.ts
+++ b/src/daemon/service-env.ts
@@ -236,12 +236,13 @@ export function buildServiceEnvironment(params: {
   port: number;
   token?: string;
   launchdLabel?: string;
+  platform?: NodeJS.Platform;
 }): Record<string, string | undefined> {
   const { env, port, token, launchdLabel } = params;
+  const platform = params.platform ?? process.platform;
   const profile = env.OPENCLAW_PROFILE;
   const resolvedLaunchdLabel =
-    launchdLabel ||
-    (process.platform === "darwin" ? resolveGatewayLaunchAgentLabel(profile) : undefined);
+    launchdLabel || (platform === "darwin" ? resolveGatewayLaunchAgentLabel(profile) : undefined);
   const systemdUnit = `${resolveGatewaySystemdServiceName(profile)}.service`;
   const stateDir = env.OPENCLAW_STATE_DIR;
   const configPath = env.OPENCLAW_CONFIG_PATH;
@@ -252,7 +253,7 @@ export function buildServiceEnvironment(params: {
   // cannot locate the system CA bundle. Default to /etc/ssl/cert.pem so TLS verification
   // works correctly when running as a LaunchAgent without extra user configuration.
   const nodeCaCerts =
-    env.NODE_EXTRA_CA_CERTS ?? (process.platform === "darwin" ? "/etc/ssl/cert.pem" : undefined);
+    env.NODE_EXTRA_CA_CERTS ?? (platform === "darwin" ? "/etc/ssl/cert.pem" : undefined);
   return {
     HOME: env.HOME,
     TMPDIR: tmpDir,
@@ -274,8 +275,10 @@ export function buildServiceEnvironment(params: {
 
 export function buildNodeServiceEnvironment(params: {
   env: Record<string, string | undefined>;
+  platform?: NodeJS.Platform;
 }): Record<string, string | undefined> {
   const { env } = params;
+  const platform = params.platform ?? process.platform;
   const stateDir = env.OPENCLAW_STATE_DIR;
   const configPath = env.OPENCLAW_CONFIG_PATH;
   const tmpDir = env.TMPDIR?.trim() || os.tmpdir();
@@ -284,7 +287,7 @@ export function buildNodeServiceEnvironment(params: {
   // cannot locate the system CA bundle. Default to /etc/ssl/cert.pem so TLS verification
   // works correctly when running as a LaunchAgent without extra user configuration.
   const nodeCaCerts =
-    env.NODE_EXTRA_CA_CERTS ?? (process.platform === "darwin" ? "/etc/ssl/cert.pem" : undefined);
+    env.NODE_EXTRA_CA_CERTS ?? (platform === "darwin" ? "/etc/ssl/cert.pem" : undefined);
   return {
     HOME: env.HOME,
     TMPDIR: tmpDir,