diff --git a/src/agents/model-suppression.ts b/src/agents/model-suppression.ts
index fee88c4fc60..81f5883fe95 100644
--- a/src/agents/model-suppression.ts
+++ b/src/agents/model-suppression.ts
@@ -1,4 +1,5 @@
 import type { OpenClawConfig } from "../config/types.openclaw.js";
+import { resolveManifestBuiltInModelSuppression } from "../plugins/manifest-model-suppression.js";
 import { resolveProviderBuiltInModelSuppression } from "../plugins/provider-runtime.js";
 import { normalizeLowercaseStringOrEmpty } from "../shared/string-coerce.js";
 import { normalizeProviderId } from "./provider-id.js";
@@ -14,6 +15,15 @@ function resolveBuiltInModelSuppression(params: {
   if (!provider || !modelId) {
     return undefined;
   }
+  const manifestResult = resolveManifestBuiltInModelSuppression({
+    provider,
+    id: modelId,
+    ...(params.config ? { config: params.config } : {}),
+    env: process.env,
+  });
+  if (manifestResult?.suppress) {
+    return manifestResult;
+  }
   return resolveProviderBuiltInModelSuppression({
     ...(params.config ? { config: params.config } : {}),
     env: process.env,
diff --git a/src/plugins/manifest-model-suppression.test.ts b/src/plugins/manifest-model-suppression.test.ts
new file mode 100644
index 00000000000..ff58494c4ab
--- /dev/null
+++ b/src/plugins/manifest-model-suppression.test.ts
@@ -0,0 +1,91 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const mocks = vi.hoisted(() => ({
+  loadPluginManifestRegistryForPluginRegistry: vi.fn(),
+}));
+
+vi.mock("./plugin-registry.js", () => ({
+  loadPluginManifestRegistryForPluginRegistry: mocks.loadPluginManifestRegistryForPluginRegistry,
+}));
+
+import {
+  clearManifestModelSuppressionCacheForTest,
+  resolveManifestBuiltInModelSuppression,
+} from "./manifest-model-suppression.js";
+
+describe("manifest model suppression", () => {
+  beforeEach(() => {
+    clearManifestModelSuppressionCacheForTest();
+    mocks.loadPluginManifestRegistryForPluginRegistry.mockReset();
+    mocks.loadPluginManifestRegistryForPluginRegistry.mockReturnValue({
+      diagnostics: [],
+      plugins: [
+        {
+          id: "openai",
+          providers: ["openai"],
+          modelCatalog: {
+            aliases: {
+              "azure-openai-responses": {
+                provider: "openai",
+              },
+            },
+            suppressions: [
+              {
+                provider: "azure-openai-responses",
+                model: "gpt-5.3-codex-spark",
+                reason: "Use openai/gpt-5.5.",
+              },
+              {
+                provider: "openrouter",
+                model: "foreign-row",
+              },
+            ],
+          },
+        },
+      ],
+    });
+  });
+
+  it("resolves manifest suppressions for declared provider aliases", () => {
+    expect(
+      resolveManifestBuiltInModelSuppression({
+        provider: "azure-openai-responses",
+        id: "GPT-5.3-Codex-Spark",
+        env: process.env,
+      }),
+    ).toEqual({
+      suppress: true,
+      errorMessage:
+        "Unknown model: azure-openai-responses/gpt-5.3-codex-spark. Use openai/gpt-5.5.",
+    });
+  });
+
+  it("ignores suppressions for providers the plugin does not own", () => {
+    expect(
+      resolveManifestBuiltInModelSuppression({
+        provider: "openrouter",
+        id: "foreign-row",
+        env: process.env,
+      }),
+    ).toBeUndefined();
+  });
+
+  it("caches planned manifest suppressions per config and environment", () => {
+    const config = { plugins: { entries: { openai: { enabled: true } } } };
+
+    resolveManifestBuiltInModelSuppression({
+      provider: "azure-openai-responses",
+      id: "gpt-5.3-codex-spark",
+      config,
+      env: process.env,
+    });
+    resolveManifestBuiltInModelSuppression({
+      provider: "azure-openai-responses",
+      id: "gpt-5.3-codex-spark",
+      config,
+      env: process.env,
+    });
+
+    expect(mocks.loadPluginManifestRegistryForPluginRegistry).toHaveBeenCalledTimes(1);
+  });
+});
diff --git a/src/plugins/manifest-model-suppression.ts b/src/plugins/manifest-model-suppression.ts
new file mode 100644
index 00000000000..61b37a6c38e
--- /dev/null
+++ b/src/plugins/manifest-model-suppression.ts
@@ -0,0 +1,117 @@
+import type { OpenClawConfig } from "../config/types.openclaw.js";
+import {
+  buildModelCatalogMergeKey,
+  planManifestModelCatalogSuppressions,
+  type ManifestModelCatalogSuppressionEntry,
+} from "../model-catalog/index.js";
+import { normalizeLowercaseStringOrEmpty } from "../shared/string-coerce.js";
+import { loadPluginManifestRegistryForPluginRegistry } from "./plugin-registry.js";
+
+type ManifestSuppressionCache = Map<string, readonly ManifestModelCatalogSuppressionEntry[]>;
+
+let cacheWithoutConfig = new WeakMap<NodeJS.ProcessEnv, ManifestSuppressionCache>();
+let cacheByConfig = new WeakMap<
+  OpenClawConfig,
+  WeakMap<NodeJS.ProcessEnv, ManifestSuppressionCache>
+>();
+
+function resolveSuppressionCache(params: {
+  config?: OpenClawConfig;
+  env: NodeJS.ProcessEnv;
+}): ManifestSuppressionCache {
+  if (!params.config) {
+    let cache = cacheWithoutConfig.get(params.env);
+    if (!cache) {
+      cache = new Map();
+      cacheWithoutConfig.set(params.env, cache);
+    }
+    return cache;
+  }
+  let envCaches = cacheByConfig.get(params.config);
+  if (!envCaches) {
+    envCaches = new WeakMap();
+    cacheByConfig.set(params.config, envCaches);
+  }
+  let cache = envCaches.get(params.env);
+  if (!cache) {
+    cache = new Map();
+    envCaches.set(params.env, cache);
+  }
+  return cache;
+}
+
+function cacheKey(params: { workspaceDir?: string }): string {
+  return params.workspaceDir ?? "";
+}
+
+function listManifestModelCatalogSuppressions(params: {
+  config?: OpenClawConfig;
+  workspaceDir?: string;
+  env: NodeJS.ProcessEnv;
+}): readonly ManifestModelCatalogSuppressionEntry[] {
+  const cache = resolveSuppressionCache({
+    config: params.config,
+    env: params.env,
+  });
+  const key = cacheKey(params);
+  const cached = cache.get(key);
+  if (cached) {
+    return cached;
+  }
+  const registry = loadPluginManifestRegistryForPluginRegistry({
+    config: params.config,
+    workspaceDir: params.workspaceDir,
+    env: params.env,
+  });
+  const planned = planManifestModelCatalogSuppressions({ registry });
+  cache.set(key, planned.suppressions);
+  return planned.suppressions;
+}
+
+function buildManifestSuppressionError(params: {
+  provider: string;
+  modelId: string;
+  reason?: string;
+}): string {
+  const ref = `${params.provider}/${params.modelId}`;
+  return params.reason ? `Unknown model: ${ref}. ${params.reason}` : `Unknown model: ${ref}.`;
+}
+
+export function clearManifestModelSuppressionCacheForTest(): void {
+  cacheWithoutConfig = new WeakMap<NodeJS.ProcessEnv, ManifestSuppressionCache>();
+  cacheByConfig = new WeakMap<
+    OpenClawConfig,
+    WeakMap<NodeJS.ProcessEnv, ManifestSuppressionCache>
+  >();
+}
+
+export function resolveManifestBuiltInModelSuppression(params: {
+  provider?: string | null;
+  id?: string | null;
+  config?: OpenClawConfig;
+  workspaceDir?: string;
+  env?: NodeJS.ProcessEnv;
+}) {
+  const provider = normalizeLowercaseStringOrEmpty(params.provider);
+  const modelId = normalizeLowercaseStringOrEmpty(params.id);
+  if (!provider || !modelId) {
+    return undefined;
+  }
+  const mergeKey = buildModelCatalogMergeKey(provider, modelId);
+  const suppression = listManifestModelCatalogSuppressions({
+    config: params.config,
+    workspaceDir: params.workspaceDir,
+    env: params.env ?? process.env,
+  }).find((entry) => entry.mergeKey === mergeKey);
+  if (!suppression) {
+    return undefined;
+  }
+  return {
+    suppress: true,
+    errorMessage: buildManifestSuppressionError({
+      provider,
+      modelId,
+      reason: suppression.reason,
+    }),
+  };
+}