diff --git a/deck-frontend/index.html b/deck-frontend/index.html
index 108aa04..8d66720 100644
--- a/deck-frontend/index.html
+++ b/deck-frontend/index.html
@@ -22,6 +22,7 @@
         <button class="btn btn-sm" id="btn-get">GET</button>
       </div>
       <div class="topbar-center">
+        <!-- Taxonomía -->
         <div class="base-buttons">
           <button class="base-btn active" data-base="hst">HST</button>
           <button class="base-btn" data-base="flg">FLG</button>
@@ -29,6 +30,26 @@
           <button class="base-btn" data-base="loc">LOC</button>
           <button class="base-btn" data-base="ply">PLY</button>
         </div>
+        <!-- Maestros -->
+        <div class="base-buttons">
+          <button class="base-btn" data-base="mst">MST</button>
+          <button class="base-btn" data-base="bck">BCK</button>
+        </div>
+        <!-- Registro -->
+        <div class="base-buttons">
+          <button class="base-btn" data-base="mth">MTH</button>
+          <button class="base-btn" data-base="atc">ATC</button>
+        </div>
+        <!-- Comunicación -->
+        <div class="base-buttons">
+          <button class="base-btn" data-base="mail">MAIL</button>
+          <button class="base-btn" data-base="chat">CHAT</button>
+        </div>
+        <!-- Servicios -->
+        <div class="base-buttons">
+          <button class="base-btn" data-base="key">KEY</button>
+          <button class="base-btn" data-base="mindlink">MIND</button>
+        </div>
       </div>
       <div class="topbar-right">
         <div class="search-box">
diff --git a/deck-frontend/src/api/client.ts b/deck-frontend/src/api/client.ts
index 3245d67..03f0f69 100644
--- a/deck-frontend/src/api/client.ts
+++ b/deck-frontend/src/api/client.ts
@@ -3,17 +3,22 @@ import { API_BASE } from '@/config/index.ts';
 interface FetchOptions {
   method?: 'GET' | 'POST';
   body?: Record<string, unknown>;
+  schema?: string;  // PostgREST Accept-Profile header
 }
 
 export async function apiClient<T>(
   endpoint: string,
   options: FetchOptions = {}
 ): Promise<T> {
-  const { method = 'GET', body } = options;
+  const { method = 'GET', body, schema } = options;
+
+  const headers: Record<string, string> = {};
+  if (body) headers['Content-Type'] = 'application/json';
+  if (schema) headers['Accept-Profile'] = schema;
 
   const config: RequestInit = {
     method,
-    headers: body ? { 'Content-Type': 'application/json' } : undefined,
+    headers: Object.keys(headers).length > 0 ? headers : undefined,
     body: body ? JSON.stringify(body) : undefined,
   };
 
diff --git a/deck-frontend/src/api/libraries.ts b/deck-frontend/src/api/libraries.ts
index 29d3c05..3884733 100644
--- a/deck-frontend/src/api/libraries.ts
+++ b/deck-frontend/src/api/libraries.ts
@@ -1,12 +1,24 @@
 import { apiClientSafe } from './client.ts';
-import type { Library } from '@/types/index.ts';
+import type { Library, BaseType } from '@/types/index.ts';
 
-export const fetchLibraries = (): Promise<Library[]> =>
-  apiClientSafe<Library[]>('/api_library_list', {}, []);
+// Base types that have library tables (public schema taxonomy tables)
+const LIBRARY_BASES = new Set(['hst', 'flg', 'itm', 'loc', 'ply']);
 
-export const fetchLibraryMembers = async (mrf: string): Promise<string[]> => {
+export const fetchLibraries = (base: BaseType): Promise<Library[]> => {
+  // Only public schema taxonomy tables have libraries
+  if (!LIBRARY_BASES.has(base)) {
+    return Promise.resolve([]);
+  }
+  // Try base-specific endpoint, fallback to generic
+  return apiClientSafe<Library[]>(`/api_library_list?base=eq.${base}`, {}, []);
+};
+
+export const fetchLibraryMembers = async (mrf: string, base: BaseType): Promise<string[]> => {
+  if (!LIBRARY_BASES.has(base)) {
+    return [];
+  }
   const data = await apiClientSafe<Array<{ mrf_tag: string }>>(
-    `/library_hst?mrf_library=eq.${mrf}`,
+    `/library_${base}?mrf_library=eq.${mrf}`,
     {},
     []
   );
diff --git a/deck-frontend/src/api/tags.ts b/deck-frontend/src/api/tags.ts
index 34c2d83..cba9f0b 100644
--- a/deck-frontend/src/api/tags.ts
+++ b/deck-frontend/src/api/tags.ts
@@ -1,8 +1,52 @@
 import { apiClientSafe } from './client.ts';
 import type { Tag, ChildTag, RelatedTag, BaseType } from '@/types/index.ts';
 
-export const fetchTags = (base: BaseType): Promise<Tag[]> =>
-  apiClientSafe<Tag[]>(`/${base}?order=ref.asc`, {}, []);
+// Schema mapping by base type
+// - public (default): hst, flg, itm, loc, ply
+// - secretaria_clara: atc, mst, bck
+// - production_alfred: mth
+// - mail_manager: mail (table: clara_registros)
+// - context_manager: chat (table: messages)
+
+interface SchemaTableConfig {
+  schema: string | null;
+  table: string;
+}
+
+const getSchemaAndTable = (base: BaseType): SchemaTableConfig => {
+  switch (base) {
+    // secretaria_clara schema
+    case 'atc':
+    case 'mst':
+    case 'bck':
+      return { schema: 'secretaria_clara', table: base };
+
+    // production_alfred schema
+    case 'mth':
+      return { schema: 'production_alfred', table: base };
+
+    // mail_manager schema
+    case 'mail':
+      return { schema: 'mail_manager', table: 'clara_registros' };
+
+    // context_manager schema
+    case 'chat':
+      return { schema: 'context_manager', table: 'messages' };
+
+    // public schema (default) - hst, flg, itm, loc, ply
+    default:
+      return { schema: null, table: base };
+  }
+};
+
+export const fetchTags = (base: BaseType): Promise<Tag[]> => {
+  const { schema, table } = getSchemaAndTable(base);
+  return apiClientSafe<Tag[]>(
+    `/${table}?order=ref.asc`,
+    schema ? { schema } : {},
+    []
+  );
+};
 
 // Fetch HST tags for group name resolution (set_hst points to hst tags)
 export const fetchHstTags = (): Promise<Tag[]> =>
diff --git a/deck-frontend/src/main.ts b/deck-frontend/src/main.ts
index a9baba3..45c4f6a 100644
--- a/deck-frontend/src/main.ts
+++ b/deck-frontend/src/main.ts
@@ -39,7 +39,7 @@ class App {
       fetchTags(state.base),
       fetchHstTags(),  // Always load HST for group name resolution
       fetchGroups(),
-      fetchLibraries()
+      fetchLibraries(state.base)  // Load libraries for current base
     ]);
     store.setState({ tags, hstTags, groups, libraries });
 
@@ -153,11 +153,12 @@ class App {
 
     delegateEvent<MouseEvent>(container, '.lib-icon', 'click', async (_, target) => {
       const library = target.dataset.lib || 'all';
+      const currentBase = store.getState().base;
 
       if (library === 'all') {
         store.setState({ library: 'all', libraryMembers: new Set() });
       } else {
-        const members = await fetchLibraryMembers(library);
+        const members = await fetchLibraryMembers(library, currentBase);
         store.setState({ library, libraryMembers: new Set(members) });
       }
 
diff --git a/deck-frontend/src/styles/main.css b/deck-frontend/src/styles/main.css
index 792fa24..9d41657 100644
--- a/deck-frontend/src/styles/main.css
+++ b/deck-frontend/src/styles/main.css
@@ -39,7 +39,7 @@ body {
     gap: 12px;
 }
 .topbar-left { display: flex; align-items: center; gap: 10px; }
-.topbar-center { flex: 1; display: flex; justify-content: center; }
+.topbar-center { flex: 1; display: flex; justify-content: center; gap: 16px; }
 .topbar-right { display: flex; align-items: center; gap: 10px; }
 .logo { font-weight: 700; font-size: 1.2em; color: var(--accent); letter-spacing: 1px; }
 
diff --git a/deck-frontend/src/types/state.ts b/deck-frontend/src/types/state.ts
index 6160185..0fc8a07 100644
--- a/deck-frontend/src/types/state.ts
+++ b/deck-frontend/src/types/state.ts
@@ -2,7 +2,12 @@ import type { Tag, Group, Library } from './tag.ts';
 import type { GraphEdge, TreeEdge, CategoryKey, EdgeType } from './graph.ts';
 
 export type ViewType = 'grid' | 'tree' | 'graph';
-export type BaseType = 'hst' | 'flg' | 'itm' | 'loc' | 'ply';
+export type BaseType =
+  | 'hst' | 'flg' | 'itm' | 'loc' | 'ply'  // Taxonomía (public)
+  | 'mth' | 'atc'                           // Registro (secretaria_clara, production_alfred)
+  | 'mst' | 'bck'                           // Maestros (secretaria_clara)
+  | 'mail' | 'chat'                         // Comunicación (mail_manager, context_manager)
+  | 'key' | 'mindlink';                     // Servicios
 export type LangType = 'es' | 'en' | 'ch';
 
 export interface GraphFilters {