diff --git a/packages/proto-signing/src/signer.ts b/packages/proto-signing/src/signer.ts
new file mode 100644
index 00000000..a5aca75b
--- /dev/null
+++ b/packages/proto-signing/src/signer.ts
@@ -0,0 +1,22 @@
+import { AccountData, OfflineSigner as OfflineAminoSigner, StdSignature } from "@cosmjs/launchpad";
+
+import { cosmos } from "./codec";
+
+export interface DirectSignResponse {
+  /**
+   * The sign doc that was signed.
+   * This may be different from the input signDoc when the signer modifies it as part of the signing process.
+   */
+  readonly signed: cosmos.tx.v1beta1.ISignDoc;
+  readonly signature: StdSignature;
+}
+
+export interface OfflineDirectSigner {
+  readonly getAccounts: () => Promise<readonly AccountData[]>;
+  readonly signDirect: (
+    signerAddress: string,
+    signDoc: cosmos.tx.v1beta1.ISignDoc,
+  ) => Promise<DirectSignResponse>;
+}
+
+export type OfflineSigner = OfflineAminoSigner | OfflineDirectSigner;
diff --git a/packages/proto-signing/types/signer.d.ts b/packages/proto-signing/types/signer.d.ts
new file mode 100644
index 00000000..dc2d9e98
--- /dev/null
+++ b/packages/proto-signing/types/signer.d.ts
@@ -0,0 +1,18 @@
+import { AccountData, OfflineSigner as OfflineAminoSigner, StdSignature } from "@cosmjs/launchpad";
+import { cosmos } from "./codec";
+export interface DirectSignResponse {
+  /**
+   * The sign doc that was signed.
+   * This may be different from the input signDoc when the signer modifies it as part of the signing process.
+   */
+  readonly signed: cosmos.tx.v1beta1.ISignDoc;
+  readonly signature: StdSignature;
+}
+export interface OfflineDirectSigner {
+  readonly getAccounts: () => Promise<readonly AccountData[]>;
+  readonly signDirect: (
+    signerAddress: string,
+    signDoc: cosmos.tx.v1beta1.ISignDoc,
+  ) => Promise<DirectSignResponse>;
+}
+export declare type OfflineSigner = OfflineAminoSigner | OfflineDirectSigner;