diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99bdc5ad822..b663cd7d03b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -34,6 +34,7 @@ Docs: https://docs.openclaw.ai
 - Plugins/startup: carry the Gateway `PluginLookUpTable` into deferred channel full-runtime reloads so post-listen startup does not rebuild manifest metadata after the provisional setup-runtime load. Thanks @shakkernerd.
 - Gateway/startup: extend `OPENCLAW_GATEWAY_STARTUP_TRACE=1` with per-phase event-loop delay plus plugin lookup-table timing and count metrics for installed-index, manifest, startup-plan, and owner-map work, and include the new timing fields in startup benchmark summaries. Thanks @shakkernerd.
 - Plugins/channels: resolve read-only channel command defaults from one plugin index plus manifest pass instead of reloading plugin metadata while checking candidate plugin enablement. Thanks @shakkernerd.
+- Plugins/capabilities: cache manifest-derived capability provider plugin IDs per config snapshot so repeated TTS, media, realtime, memory, image, video, and music provider resolution avoids redundant manifest scans. Thanks @shakkernerd.
 - Plugins/contracts: resolve runtime manifest-contract plugin owners from one plugin index plus manifest pass instead of rebuilding manifest metadata separately for all owners and enabled owners. Thanks @shakkernerd.
 - Plugins/extractors: reuse one manifest registry pass while resolving bundled document and web-content extractor plugins instead of rereading manifests for compatibility and enablement filtering. Thanks @shakkernerd.
 - Plugins/registry: resolve lookup-table owner maps for providers, CLI backends, setup providers, command aliases, model catalogs, channel configs, and manifest contracts while preserving setup-only CLI backend ownership. Thanks @shakkernerd.
diff --git a/src/plugins/capability-provider-runtime.test.ts b/src/plugins/capability-provider-runtime.test.ts
index 0e2dac21b88..b7adac097eb 100644
--- a/src/plugins/capability-provider-runtime.test.ts
+++ b/src/plugins/capability-provider-runtime.test.ts
@@ -502,6 +502,27 @@ describe("resolvePluginCapabilityProviders", () => {
     });
   });
 
+  it("reuses manifest-derived capability plugin ids for the same config snapshot", () => {
+    const { cfg, enablementCompat } = createCompatChainConfig();
+    setBundledCapabilityFixture("mediaUnderstandingProviders");
+    mocks.withBundledPluginEnablementCompat.mockReturnValue(enablementCompat);
+    mocks.withBundledPluginVitestCompat.mockReturnValue(enablementCompat);
+
+    expectNoResolvedCapabilityProviders(
+      resolvePluginCapabilityProviders({ key: "mediaUnderstandingProviders", cfg }),
+    );
+    expectNoResolvedCapabilityProviders(
+      resolvePluginCapabilityProviders({ key: "mediaUnderstandingProviders", cfg }),
+    );
+
+    expect(mocks.loadPluginManifestRegistry).toHaveBeenCalledOnce();
+    expect(mocks.withBundledPluginAllowlistCompat).toHaveBeenCalledTimes(2);
+    expect(mocks.withBundledPluginAllowlistCompat).toHaveBeenCalledWith({
+      config: cfg,
+      pluginIds: ["openai"],
+    });
+  });
+
   it("reuses a compatible active registry even when the capability list is empty", () => {
     const active = createEmptyPluginRegistry();
     mocks.resolveRuntimePluginRegistry.mockReturnValue(active);
diff --git a/src/plugins/capability-provider-runtime.ts b/src/plugins/capability-provider-runtime.ts
index 364cf444e0d..e0c44dd5174 100644
--- a/src/plugins/capability-provider-runtime.ts
+++ b/src/plugins/capability-provider-runtime.ts
@@ -4,6 +4,11 @@ import {
   withBundledPluginEnablementCompat,
   withBundledPluginVitestCompat,
 } from "./bundled-compat.js";
+import {
+  buildPluginSnapshotCacheEnvKey,
+  resolvePluginSnapshotCacheTtlMs,
+  shouldUsePluginSnapshotCache,
+} from "./cache-controls.js";
 import { hasExplicitPluginConfig } from "./config-policy.js";
 import { resolveRuntimePluginRegistry } from "./loader.js";
 import { loadPluginManifestRegistryForPluginRegistry } from "./plugin-registry.js";
@@ -32,6 +37,11 @@ type CapabilityContractKey =
 type CapabilityProviderForKey<K extends CapabilityProviderRegistryKey> =
   PluginRegistry[K][number] extends { provider: infer T } ? T : never;
 
+type CapabilityProviderPluginIdCacheEntry = {
+  expiresAt: number;
+  pluginIds: string[];
+};
+
 const CAPABILITY_CONTRACT_KEY: Record<CapabilityProviderRegistryKey, CapabilityContractKey> = {
   memoryEmbeddingProviders: "memoryEmbeddingProviders",
   speechProviders: "speechProviders",
@@ -43,15 +53,86 @@ const CAPABILITY_CONTRACT_KEY: Record<CapabilityProviderRegistryKey, CapabilityC
   musicGenerationProviders: "musicGenerationProviders",
 };
 
+const capabilityProviderPluginIdCache = new WeakMap<
+  OpenClawConfig,
+  WeakMap<NodeJS.ProcessEnv, Map<string, CapabilityProviderPluginIdCacheEntry>>
+>();
+
+function buildCapabilityProviderPluginIdCacheKey(params: {
+  key: CapabilityProviderRegistryKey;
+  env: NodeJS.ProcessEnv;
+  providerId?: string;
+}): string {
+  return JSON.stringify({
+    key: params.key,
+    providerId: params.providerId ?? "",
+    env: buildPluginSnapshotCacheEnvKey(params.env),
+  });
+}
+
+function getCachedCapabilityProviderPluginIds(params: {
+  key: CapabilityProviderRegistryKey;
+  cfg?: OpenClawConfig;
+  env: NodeJS.ProcessEnv;
+  providerId?: string;
+}): string[] | undefined {
+  if (!params.cfg || !shouldUsePluginSnapshotCache(params.env)) {
+    return undefined;
+  }
+  const envCache = capabilityProviderPluginIdCache.get(params.cfg)?.get(params.env);
+  const cached = envCache?.get(buildCapabilityProviderPluginIdCacheKey(params));
+  if (!cached || cached.expiresAt <= Date.now()) {
+    return undefined;
+  }
+  return [...cached.pluginIds];
+}
+
+function memoizeCapabilityProviderPluginIds(params: {
+  key: CapabilityProviderRegistryKey;
+  cfg?: OpenClawConfig;
+  env: NodeJS.ProcessEnv;
+  providerId?: string;
+  pluginIds: string[];
+}): void {
+  if (!params.cfg || !shouldUsePluginSnapshotCache(params.env)) {
+    return;
+  }
+  let configCache = capabilityProviderPluginIdCache.get(params.cfg);
+  if (!configCache) {
+    configCache = new WeakMap<
+      NodeJS.ProcessEnv,
+      Map<string, CapabilityProviderPluginIdCacheEntry>
+    >();
+    capabilityProviderPluginIdCache.set(params.cfg, configCache);
+  }
+  let envCache = configCache.get(params.env);
+  if (!envCache) {
+    envCache = new Map<string, CapabilityProviderPluginIdCacheEntry>();
+    configCache.set(params.env, envCache);
+  }
+  envCache.set(buildCapabilityProviderPluginIdCacheKey(params), {
+    expiresAt: Date.now() + resolvePluginSnapshotCacheTtlMs(params.env),
+    pluginIds: [...params.pluginIds],
+  });
+}
+
 function resolveBundledCapabilityCompatPluginIds(params: {
   key: CapabilityProviderRegistryKey;
   cfg?: OpenClawConfig;
   providerId?: string;
 }): string[] {
+  const env = process.env;
+  const cached = getCachedCapabilityProviderPluginIds({
+    ...params,
+    env,
+  });
+  if (cached) {
+    return cached;
+  }
   const contractKey = CAPABILITY_CONTRACT_KEY[params.key];
-  return loadPluginManifestRegistryForPluginRegistry({
+  const pluginIds = loadPluginManifestRegistryForPluginRegistry({
     config: params.cfg,
-    env: process.env,
+    env,
     includeDisabled: true,
   })
     .plugins.filter(
@@ -62,6 +143,12 @@ function resolveBundledCapabilityCompatPluginIds(params: {
     )
     .map((plugin) => plugin.id)
     .toSorted((left, right) => left.localeCompare(right));
+  memoizeCapabilityProviderPluginIds({
+    ...params,
+    env,
+    pluginIds,
+  });
+  return pluginIds;
 }
 
 function resolveCapabilityProviderConfig(params: {