diff --git a/CHANGELOG.md b/CHANGELOG.md
index cfd555ee12f..bdbbe2a2311 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -88,6 +88,7 @@ Docs: https://docs.openclaw.ai
 - TUI/activation: validate `/activation` arguments in the TUI and reject invalid values instead of silently coercing them to `mention`. (#55733) Thanks @shakkernerd.
 - Agents/model switching: apply `/model` changes to active embedded runs at the next safe retry boundary, so overloaded or retrying turns switch to the newly selected model instead of staying pinned to the old provider.
 - Agents/Codex fallback: classify Codex `server_error` payloads as failoverable, sanitize `Codex error:` payloads before they reach chat, preserve context-overflow guidance for prefixed `invalid_request_error` payloads, and omit provider `request_id` values from user-facing UI copy. (#42892) Thanks @xaeon2026.
+- Memory/search: share memory embedding provider registrations across split plugin runtimes so memory search no longer fails with unknown provider errors after memory-core registers built-in adapters. (#55945) Thanks @glitch418x.
 
 ## 2026.3.24
 
diff --git a/src/plugins/memory-embedding-providers.test.ts b/src/plugins/memory-embedding-providers.test.ts
index 6485cc16798..e64b975f8cd 100644
--- a/src/plugins/memory-embedding-providers.test.ts
+++ b/src/plugins/memory-embedding-providers.test.ts
@@ -11,6 +11,8 @@ import {
   type MemoryEmbeddingProviderAdapter,
 } from "./memory-embedding-providers.js";
 
+const MEMORY_EMBEDDING_PROVIDERS_KEY = Symbol.for("openclaw.memoryEmbeddingProviders");
+
 function createAdapter(id: string): MemoryEmbeddingProviderAdapter {
   return {
     id,
@@ -81,4 +83,18 @@ describe("memory embedding provider registry", () => {
 
     expect(listMemoryEmbeddingProviders()).toEqual([]);
   });
+
+  it("stores adapters in a process-global singleton map", () => {
+    const alpha = createAdapter("alpha");
+    registerMemoryEmbeddingProvider(alpha, { ownerPluginId: "memory-core" });
+
+    const globalRegistry = (globalThis as Record<PropertyKey, unknown>)[
+      MEMORY_EMBEDDING_PROVIDERS_KEY
+    ] as Map<string, { adapter: MemoryEmbeddingProviderAdapter; ownerPluginId?: string }>;
+
+    expect(globalRegistry.get("alpha")).toEqual({
+      adapter: alpha,
+      ownerPluginId: "memory-core",
+    });
+  });
 });
diff --git a/src/plugins/memory-embedding-providers.ts b/src/plugins/memory-embedding-providers.ts
index fd1edd09b32..167773ae0df 100644
--- a/src/plugins/memory-embedding-providers.ts
+++ b/src/plugins/memory-embedding-providers.ts
@@ -72,13 +72,24 @@ export type RegisteredMemoryEmbeddingProvider = {
   ownerPluginId?: string;
 };
 
-const memoryEmbeddingProviders = new Map<string, RegisteredMemoryEmbeddingProvider>();
+const MEMORY_EMBEDDING_PROVIDERS_KEY = Symbol.for("openclaw.memoryEmbeddingProviders");
+
+function getMemoryEmbeddingProviders(): Map<string, RegisteredMemoryEmbeddingProvider> {
+  const globalStore = globalThis as Record<PropertyKey, unknown>;
+  const existing = globalStore[MEMORY_EMBEDDING_PROVIDERS_KEY];
+  if (existing instanceof Map) {
+    return existing as Map<string, RegisteredMemoryEmbeddingProvider>;
+  }
+  const created = new Map<string, RegisteredMemoryEmbeddingProvider>();
+  globalStore[MEMORY_EMBEDDING_PROVIDERS_KEY] = created;
+  return created;
+}
 
 export function registerMemoryEmbeddingProvider(
   adapter: MemoryEmbeddingProviderAdapter,
   options?: { ownerPluginId?: string },
 ): void {
-  memoryEmbeddingProviders.set(adapter.id, {
+  getMemoryEmbeddingProviders().set(adapter.id, {
     adapter,
     ownerPluginId: options?.ownerPluginId,
   });
@@ -87,15 +98,15 @@ export function registerMemoryEmbeddingProvider(
 export function getRegisteredMemoryEmbeddingProvider(
   id: string,
 ): RegisteredMemoryEmbeddingProvider | undefined {
-  return memoryEmbeddingProviders.get(id);
+  return getMemoryEmbeddingProviders().get(id);
 }
 
 export function getMemoryEmbeddingProvider(id: string): MemoryEmbeddingProviderAdapter | undefined {
-  return memoryEmbeddingProviders.get(id)?.adapter;
+  return getMemoryEmbeddingProviders().get(id)?.adapter;
 }
 
 export function listRegisteredMemoryEmbeddingProviders(): RegisteredMemoryEmbeddingProvider[] {
-  return Array.from(memoryEmbeddingProviders.values());
+  return Array.from(getMemoryEmbeddingProviders().values());
 }
 
 export function listMemoryEmbeddingProviders(): MemoryEmbeddingProviderAdapter[] {
@@ -103,7 +114,7 @@ export function listMemoryEmbeddingProviders(): MemoryEmbeddingProviderAdapter[]
 }
 
 export function restoreMemoryEmbeddingProviders(adapters: MemoryEmbeddingProviderAdapter[]): void {
-  memoryEmbeddingProviders.clear();
+  getMemoryEmbeddingProviders().clear();
   for (const adapter of adapters) {
     registerMemoryEmbeddingProvider(adapter);
   }
@@ -112,7 +123,7 @@ export function restoreMemoryEmbeddingProviders(adapters: MemoryEmbeddingProvide
 export function restoreRegisteredMemoryEmbeddingProviders(
   entries: RegisteredMemoryEmbeddingProvider[],
 ): void {
-  memoryEmbeddingProviders.clear();
+  getMemoryEmbeddingProviders().clear();
   for (const entry of entries) {
     registerMemoryEmbeddingProvider(entry.adapter, {
       ownerPluginId: entry.ownerPluginId,
@@ -121,7 +132,7 @@ export function restoreRegisteredMemoryEmbeddingProviders(
 }
 
 export function clearMemoryEmbeddingProviders(): void {
-  memoryEmbeddingProviders.clear();
+  getMemoryEmbeddingProviders().clear();
 }
 
 export const _resetMemoryEmbeddingProviders = clearMemoryEmbeddingProviders;