diff --git a/CHANGELOG.md b/CHANGELOG.md
index 84b8b6fbd6f..a0ce842f8be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ Docs: https://docs.openclaw.ai
 ### Fixes
 
 - Gateway/security default response headers: add `Permissions-Policy: camera=(), microphone=(), geolocation=()` to baseline gateway HTTP security headers for all responses. (#30186) thanks @habakan.
+- Plugins/startup loading: lazily initialize plugin runtime, split startup-critical plugin SDK imports into `openclaw/plugin-sdk/core` and `openclaw/plugin-sdk/telegram`, and preserve `api.runtime` reflection semantics for plugin compatibility. (#28620) thanks @hmemcpy.
 - Security/auth labels: remove token and API-key snippets from user-facing auth status labels so `/status` and `/models` do not expose credential fragments. (#33262) thanks @cu1ch3n.
 - Security/audit denyCommands guidance: suggest likely exact node command IDs for unknown `gateway.nodes.denyCommands` entries so ineffective denylist entries are easier to correct. (#29713) thanks @liquidhorizon88-bot.
 - Docs/security hardening guidance: document Docker `DOCKER-USER` + UFW policy and add cross-linking from Docker install docs for VPS/public-host setups. (#27613) thanks @dorukardahan.
diff --git a/src/plugins/loader.test.ts b/src/plugins/loader.test.ts
index d9b31fe8a4b..1a002447711 100644
--- a/src/plugins/loader.test.ts
+++ b/src/plugins/loader.test.ts
@@ -974,6 +974,37 @@ describe("loadOpenClawPlugins", () => {
     );
   });
 
+  it("preserves runtime reflection semantics when runtime is lazily initialized", () => {
+    useNoBundledPlugins();
+    const plugin = writePlugin({
+      id: "runtime-introspection",
+      filename: "runtime-introspection.cjs",
+      body: `module.exports = { id: "runtime-introspection", register(api) {
+  const runtime = api.runtime ?? {};
+  const keys = Object.keys(runtime);
+  if (!keys.includes("channel")) {
+    throw new Error("runtime channel key missing");
+  }
+  if (!("channel" in runtime)) {
+    throw new Error("runtime channel missing from has check");
+  }
+  if (!Object.getOwnPropertyDescriptor(runtime, "channel")) {
+    throw new Error("runtime channel descriptor missing");
+  }
+} };`,
+    });
+
+    const registry = loadRegistryFromSinglePlugin({
+      plugin,
+      pluginConfig: {
+        allow: ["runtime-introspection"],
+      },
+    });
+
+    const record = registry.plugins.find((entry) => entry.id === "runtime-introspection");
+    expect(record?.status).toBe("loaded");
+  });
+
   it("prefers dist plugin-sdk alias when loader runs from dist", () => {
     const { root, distFile } = createPluginSdkAliasFixture();
 
diff --git a/src/plugins/loader.ts b/src/plugins/loader.ts
index e06f4322782..6bbdaacd5e0 100644
--- a/src/plugins/loader.ts
+++ b/src/plugins/loader.ts
@@ -405,10 +405,34 @@ export function loadOpenClawPlugins(options: PluginLoadOptions = {}): PluginRegi
   // Lazily initialize the runtime so startup paths that discover/skip plugins do
   // not eagerly load every channel runtime dependency.
   let resolvedRuntime: PluginRuntime | null = null;
+  const resolveRuntime = (): PluginRuntime => {
+    resolvedRuntime ??= createPluginRuntime();
+    return resolvedRuntime;
+  };
   const runtime = new Proxy({} as PluginRuntime, {
     get(_target, prop, receiver) {
-      resolvedRuntime ??= createPluginRuntime();
-      return Reflect.get(resolvedRuntime, prop, receiver);
+      return Reflect.get(resolveRuntime(), prop, receiver);
+    },
+    set(_target, prop, value, receiver) {
+      return Reflect.set(resolveRuntime(), prop, value, receiver);
+    },
+    has(_target, prop) {
+      return Reflect.has(resolveRuntime(), prop);
+    },
+    ownKeys() {
+      return Reflect.ownKeys(resolveRuntime() as object);
+    },
+    getOwnPropertyDescriptor(_target, prop) {
+      return Reflect.getOwnPropertyDescriptor(resolveRuntime() as object, prop);
+    },
+    defineProperty(_target, prop, attributes) {
+      return Reflect.defineProperty(resolveRuntime() as object, prop, attributes);
+    },
+    deleteProperty(_target, prop) {
+      return Reflect.deleteProperty(resolveRuntime() as object, prop);
+    },
+    getPrototypeOf() {
+      return Reflect.getPrototypeOf(resolveRuntime() as object);
     },
   });
   const { registry, createApi } = createPluginRegistry({