diff --git a/web-ui/src/lib/api/settings.ts b/web-ui/src/lib/api/settings.ts
index 87c708c..52c4466 100644
--- a/web-ui/src/lib/api/settings.ts
+++ b/web-ui/src/lib/api/settings.ts
@@ -55,3 +55,119 @@ export function useDeleteTagMapping() {
     onSuccess: () => qc.invalidateQueries({ queryKey: ["settings", "tag-mappings"] }),
   });
 }
+
+// ── MCP Settings ────────────────────────────────────────────────
+
+export type EnvCategory =
+  | "multimodal"
+  | "rerank"
+  | "halacha"
+  | "credentials"
+  | "connection"
+  | "general";
+
+export type EnvType = "bool" | "int" | "float" | "string";
+
+export type McpEnvVar = {
+  key: string;
+  category: EnvCategory;
+  type: EnvType;
+  description: string;
+  is_secret: boolean;
+  is_editable: boolean;
+  default: unknown;
+  min: number | null;
+  max: number | null;
+  enum_values: string[] | null;
+  infisical_value: string | null;
+  container_value: string | null;
+  drift: boolean;
+};
+
+export type McpEnvResponse = {
+  vars: McpEnvVar[];
+  infisical_environment: string;
+  infisical_project_id: string;
+  infisical_path: string;
+  coolify_app_uuid: string;
+  errors: string[];
+};
+
+export type McpTool = {
+  name: string;
+  description: string;
+  params_schema: unknown;
+  module: string;
+  source_location: string;
+};
+
+export type McpRegistration = {
+  client: string;
+  server_name: string;
+  command: string;
+  args: string[];
+  cwd: string;
+  env_keys: string[];
+  transport: string;
+};
+
+export function useMcpEnv() {
+  return useQuery({
+    queryKey: ["settings", "mcp-env"] as const,
+    queryFn: ({ signal }) =>
+      apiRequest<McpEnvResponse>("/api/settings/mcp/env", { signal }),
+    staleTime: 5_000,
+  });
+}
+
+export function useUpdateMcpEnv() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: ({ key, value }: { key: string; value: unknown }) =>
+      apiRequest<{
+        ok: boolean;
+        key: string;
+        saved_value: string;
+        requires_redeploy: boolean;
+        message: string;
+      }>(`/api/settings/mcp/env/${encodeURIComponent(key)}`, {
+        method: "PATCH",
+        body: { value },
+      }),
+    onSuccess: () => qc.invalidateQueries({ queryKey: ["settings", "mcp-env"] }),
+  });
+}
+
+export function useMcpRedeploy() {
+  return useMutation({
+    mutationFn: () =>
+      apiRequest<{ ok: boolean; deployment_uuid: string | null; message: string }>(
+        "/api/settings/mcp/env/redeploy",
+        { method: "POST" },
+      ),
+  });
+}
+
+export function useMcpTools() {
+  return useQuery({
+    queryKey: ["settings", "mcp-tools"] as const,
+    queryFn: ({ signal }) =>
+      apiRequest<{ tools: McpTool[]; count: number }>("/api/settings/mcp/tools", {
+        signal,
+      }),
+    staleTime: 60_000,
+  });
+}
+
+export function useMcpRegistrations() {
+  return useQuery({
+    queryKey: ["settings", "mcp-registrations"] as const,
+    queryFn: ({ signal }) =>
+      apiRequest<{
+        registrations: McpRegistration[];
+        error: string | null;
+        message?: string;
+      }>("/api/settings/mcp/registrations", { signal }),
+    staleTime: 60_000,
+  });
+}