diff --git a/README.zh-CN.md b/README.zh-CN.md
index 28359fe..d41eee5 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -89,7 +89,7 @@ confirm_apply=APPLY_AND_SYNC
 - 多服务目标以 `service_name` 为唯一主标识；同一 `account_scope` 可以有多个策略服务，切换只更新精确服务，不会覆盖兄弟目标。
 - `CLOUD_RUN_SERVICE_TARGETS_JSON` 同时支持数组和 `{targets:[...]}`；新增服务必须显式选择 `service_targets_mode=allow_create`。
 - 跨仓写 variables 和触发 workflow 必须在本仓配置 `RUNTIME_SETTINGS_GH_TOKEN` secret，token 至少需要目标仓库的 variables/workflow 写权限；不会回退到默认 `github.token` 写远端变量。
-- `RUNTIME_TARGET_JSON` 是经过 schema 校验的非敏感部署意图，控制台会写入 GitHub Variable；下游平台应优先读取该 Variable，旧同名 Secret 仅可作为迁移回退。它不得包含券商凭据、账户密码或 API key。
+- `RUNTIME_TARGET_JSON` 与多服务清单 `CLOUD_RUN_SERVICE_TARGETS_JSON` 都是经过 schema 校验的非敏感部署意图，控制台会写入 GitHub Variable；下游平台应优先读取这些 Variable，旧同名 Secret 仅可作为迁移回退。两者都不得包含券商凭据、账户密码或 API key；校验器也会拒绝嵌套的疑似 secret 字段。
 - LongBridge、IBKR、Schwab、Firstrade 的 `service_targets_mode=auto` 会检查目标仓库是否已有多服务清单，因此即使只做 preview 也需要 `RUNTIME_SETTINGS_GH_TOKEN`。
 - Binance 运行在 Oracle Cloud VPS 的 self-hosted runner。仓库变量会在外部调度器下一次触发 `main.yml` 时被读取；中控不会自动触发该运行 workflow，因为它可能直接执行实盘。切换到不同运行频率的策略时，还必须单独复核 VPS 外部调度器。
 - QMT 当前仅支持 dry-run，尚无实盘部署配置；可以生成目标并暂存仓库变量，但会拒绝 `trigger_platform_sync=true`。
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 10cc812..ab04397 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -4,7 +4,7 @@
 
 QuantRuntimeSettings is a **config-driven** runtime settings package that serves as the central control plane for QuantStrategyLab deployments. It defines versioned strategy-to-platform assignments and hosts a Cloudflare Workers-based console. The console is evolving into the personal deployment's single human-facing global decision surface; see [Unified Control Console V1](qsl_unified_control_console_architecture_v1.zh-CN.md). It remains separate from broker credentials and execution.
 
-The generated `RUNTIME_TARGET_JSON` payload is the canonical desired-state contract for one deployment target. `scheduler`, `market`, `market_calendar`, `market_timezone`, and plugin mount outputs are derived from `strategy_profile`, while `execution_mode` is validated against strategy-profile policy. It is validated, non-secret deployment metadata and is written as a GitHub Variable so the console can reconcile desired state; it must never contain credentials or account secrets. Platform consumers must prefer that Variable and may read a legacy Secret only as a temporary migration fallback.
+The generated `RUNTIME_TARGET_JSON` payload is the canonical desired-state contract for one deployment target. `scheduler`, `market`, `market_calendar`, `market_timezone`, and plugin mount outputs are derived from `strategy_profile`, while `execution_mode` is validated against strategy-profile policy. It and the repository-level `CLOUD_RUN_SERVICE_TARGETS_JSON` inventory are validated, non-secret deployment metadata written as GitHub Variables so the console can reconcile desired state; neither may contain credentials or account secrets. Platform consumers must prefer those Variables and may read legacy Secrets only as temporary migration fallbacks.
 
 ### Multi-strategy identity and storage
 
diff --git a/python/scripts/runtime_settings.py b/python/scripts/runtime_settings.py
index 685ef2b..11c3110 100644
--- a/python/scripts/runtime_settings.py
+++ b/python/scripts/runtime_settings.py
@@ -892,6 +892,32 @@ def validate_option_overlay_variables(extra_variables: dict[str, Any], errors: l
         errors.append("extra_variables.OPTION_OVERLAY_ENABLED is false but an option overlay family is enabled")
 
 
+def validate_nonsecret_service_target_inventory(value: Any, *, path: str, errors: list[str]) -> None:
+    """Reject secret-shaped keys nested in a variable-backed service inventory."""
+    payload = value
+    if isinstance(payload, str):
+        try:
+            payload = json.loads(payload)
+        except json.JSONDecodeError:
+            return
+
+    def visit(node: Any, current_path: str) -> None:
+        if isinstance(node, dict):
+            for key, nested in node.items():
+                key_text = str(key)
+                nested_path = f"{current_path}.{key_text}"
+                if is_secret_variable_name(key_text):
+                    errors.append(f"{nested_path} looks like a secret and must not be stored here")
+                    continue
+                visit(nested, nested_path)
+        elif isinstance(node, list):
+            for index, nested in enumerate(node):
+                visit(nested, f"{current_path}[{index}]")
+
+    if isinstance(payload, (dict, list)):
+        visit(payload, path)
+
+
 def validate_extra_variables(target: dict[str, Any], errors: list[str]) -> None:
     extra_variables = target.get("extra_variables", {})
     if not isinstance(extra_variables, dict):
@@ -912,6 +938,10 @@ def validate_extra_variables(target: dict[str, Any], errors: list[str]) -> None:
             errors.append(f"extra_variables.{name} looks like a secret and must not be stored here")
         if isinstance(value, str) and "\n" in value:
             errors.append(f"extra_variables.{name} must be a single-line value")
+        if name == "CLOUD_RUN_SERVICE_TARGETS_JSON":
+            validate_nonsecret_service_target_inventory(
+                value, path=f"extra_variables.{name}", errors=errors
+            )
 
     validate_option_overlay_variables(extra_variables, errors)
 
@@ -945,6 +975,10 @@ def validate_repository_variables(target: dict[str, Any], errors: list[str]) ->
             errors.append(f"repository_variables.{name} looks like a secret and must not be stored here")
         if isinstance(value, str) and "\n" in value:
             errors.append(f"repository_variables.{name} must be a single-line value")
+        if name == "CLOUD_RUN_SERVICE_TARGETS_JSON":
+            validate_nonsecret_service_target_inventory(
+                value, path=f"repository_variables.{name}", errors=errors
+            )
 
 
 def validate_target(target: dict[str, Any], path: Path | None = None) -> list[str]:
diff --git a/python/tests/test_runtime_settings.py b/python/tests/test_runtime_settings.py
index 8ad5fd5..31e3c12 100644
--- a/python/tests/test_runtime_settings.py
+++ b/python/tests/test_runtime_settings.py
@@ -1316,6 +1316,31 @@ def test_extra_variables_reject_secret_values_but_allow_secret_pointers(self):
             errors,
         )
 
+    def test_service_target_inventory_rejects_nested_secret_values(self):
+        _, target = self.load_target("examples/targets/longbridge/sg.example.json")
+        target["repository_variables"] = {
+            "CLOUD_RUN_SERVICE_TARGETS_JSON": {
+                "targets": [
+                    {
+                        "service": "longbridge-quant-sg-service",
+                        "BROKER_PASSWORD": "not-allowed",
+                        "LONGPORT_SECRET_NAME": "allowed-secret-manager-name",
+                    }
+                ]
+            }
+        }
+
+        errors = runtime_settings.validate_target(target)
+
+        self.assertIn(
+            "repository_variables.CLOUD_RUN_SERVICE_TARGETS_JSON.targets[0].BROKER_PASSWORD looks like a secret and must not be stored here",
+            errors,
+        )
+        self.assertNotIn(
+            "repository_variables.CLOUD_RUN_SERVICE_TARGETS_JSON.targets[0].LONGPORT_SECRET_NAME looks like a secret and must not be stored here",
+            errors,
+        )
+
     def test_longbridge_dry_run_flag_must_match_runtime_target(self):
         _, target = self.load_target("examples/targets/longbridge/sg.example.json")
         target["extra_variables"]["LONGBRIDGE_DRY_RUN_ONLY"] = "true"