diff --git a/packages/sdk38/src/lcdapi/index.ts b/packages/sdk38/src/lcdapi/index.ts
new file mode 100644
index 00000000..353d2fb3
--- /dev/null
+++ b/packages/sdk38/src/lcdapi/index.ts
@@ -0,0 +1,3 @@
+// See tracking issue https://github.com/CosmWasm/cosmjs/issues/276 for module support
+
+export { SupplyModule, TotalSupplyAllReponse, TotalSupplyReponse } from "./supply";
diff --git a/packages/sdk38/src/lcdapi/supply.spec.ts b/packages/sdk38/src/lcdapi/supply.spec.ts
new file mode 100644
index 00000000..6ae295e7
--- /dev/null
+++ b/packages/sdk38/src/lcdapi/supply.spec.ts
@@ -0,0 +1,40 @@
+import { LcdClient } from "../lcdclient";
+import { pendingWithoutWasmd, wasmd } from "../testutils.spec";
+import { setupSupplyModule } from "./supply";
+
+describe("supply", () => {
+  describe("totalSupplyAll", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+
+      const client = LcdClient.withModules({ apiUrl: wasmd.endpoint }, setupSupplyModule);
+      const supply = await client.totalSupplyAll();
+      expect(supply).toEqual({
+        height: jasmine.stringMatching(/^[0-9]+$/),
+        result: [
+          {
+            amount: jasmine.stringMatching(/^[0-9]+$/),
+            denom: "ucosm",
+          },
+          {
+            amount: jasmine.stringMatching(/^[0-9]+$/),
+            denom: "ustake",
+          },
+        ],
+      });
+    });
+  });
+
+  describe("totalSupply", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+
+      const client = LcdClient.withModules({ apiUrl: wasmd.endpoint }, setupSupplyModule);
+      const supply = await client.totalSupply("ucosm");
+      expect(supply).toEqual({
+        height: jasmine.stringMatching(/^[0-9]+$/),
+        result: jasmine.stringMatching(/^[0-9]+$/),
+      });
+    });
+  });
+});
diff --git a/packages/sdk38/src/lcdapi/supply.ts b/packages/sdk38/src/lcdapi/supply.ts
new file mode 100644
index 00000000..2063954f
--- /dev/null
+++ b/packages/sdk38/src/lcdapi/supply.ts
@@ -0,0 +1,29 @@
+import { Coin } from "../coins";
+import { LcdApiArray, LcdClient, LcdModule } from "../lcdclient";
+
+export interface TotalSupplyAllReponse {
+  readonly height: string;
+  readonly result: LcdApiArray<Coin>;
+}
+
+export interface TotalSupplyReponse {
+  readonly height: string;
+  /** The amount */
+  readonly result: string;
+}
+
+export interface SupplyModule extends LcdModule {
+  readonly totalSupplyAll: () => Promise<TotalSupplyAllReponse>;
+  readonly totalSupply: (denom: string) => Promise<TotalSupplyReponse>;
+}
+
+export function setupSupplyModule(base: LcdClient): SupplyModule {
+  return {
+    totalSupplyAll: async () => {
+      return base.get(`/supply/total`);
+    },
+    totalSupply: async (denom: string) => {
+      return base.get(`/supply/total/${denom}`);
+    },
+  };
+}
diff --git a/packages/sdk38/src/lcdclient.ts b/packages/sdk38/src/lcdclient.ts
index 92613533..2a1581ba 100644
--- a/packages/sdk38/src/lcdclient.ts
+++ b/packages/sdk38/src/lcdclient.ts
@@ -21,7 +21,7 @@ export function normalizeArray<T>(backend: LcdApiArray<T>): ReadonlyArray<T> {
   return backend || [];
 }
 
-type LcdModule = Record<string, () => any>;
+export type LcdModule = Record<string, (...args: any[]) => any>;
 
 type LcdModuleSetup<M> = (base: LcdClient) => M;
 
diff --git a/packages/sdk38/types/lcdapi/index.d.ts b/packages/sdk38/types/lcdapi/index.d.ts
new file mode 100644
index 00000000..0e8ba9fe
--- /dev/null
+++ b/packages/sdk38/types/lcdapi/index.d.ts
@@ -0,0 +1 @@
+export { SupplyModule, TotalSupplyAllReponse, TotalSupplyReponse } from "./supply";
diff --git a/packages/sdk38/types/lcdapi/supply.d.ts b/packages/sdk38/types/lcdapi/supply.d.ts
new file mode 100644
index 00000000..321869a9
--- /dev/null
+++ b/packages/sdk38/types/lcdapi/supply.d.ts
@@ -0,0 +1,16 @@
+import { Coin } from "../coins";
+import { LcdApiArray, LcdClient, LcdModule } from "../lcdclient";
+export interface TotalSupplyAllReponse {
+  readonly height: string;
+  readonly result: LcdApiArray<Coin>;
+}
+export interface TotalSupplyReponse {
+  readonly height: string;
+  /** The amount */
+  readonly result: string;
+}
+export interface SupplyModule extends LcdModule {
+  readonly totalSupplyAll: () => Promise<TotalSupplyAllReponse>;
+  readonly totalSupply: (denom: string) => Promise<TotalSupplyReponse>;
+}
+export declare function setupSupplyModule(base: LcdClient): SupplyModule;
diff --git a/packages/sdk38/types/lcdapi/supply.spec.d.ts b/packages/sdk38/types/lcdapi/supply.spec.d.ts
new file mode 100644
index 00000000..cb0ff5c3
--- /dev/null
+++ b/packages/sdk38/types/lcdapi/supply.spec.d.ts
@@ -0,0 +1 @@
+export {};
diff --git a/packages/sdk38/types/lcdclient.d.ts b/packages/sdk38/types/lcdclient.d.ts
index f044d509..f8c2519a 100644
--- a/packages/sdk38/types/lcdclient.d.ts
+++ b/packages/sdk38/types/lcdclient.d.ts
@@ -12,7 +12,7 @@ import { CosmosSdkTx, StdTx } from "./types";
 /** Unfortunately, Cosmos SDK encodes empty arrays as null */
 export declare type LcdApiArray<T> = ReadonlyArray<T> | null;
 export declare function normalizeArray<T>(backend: LcdApiArray<T>): ReadonlyArray<T>;
-declare type LcdModule = Record<string, () => any>;
+export declare type LcdModule = Record<string, (...args: any[]) => any>;
 declare type LcdModuleSetup<M> = (base: LcdClient) => M;
 export interface LcdClientBaseOptions {
   readonly apiUrl: string;