diff --git a/holo-key-manager-extension/src/lib/helpers/queries.ts b/holo-key-manager-extension/src/lib/helpers/queries.ts
index c4b7eb0..5855abc 100644
--- a/holo-key-manager-extension/src/lib/helpers/queries.ts
+++ b/holo-key-manager-extension/src/lib/helpers/queries.ts
@@ -120,7 +120,7 @@ export const signMessage = async (message: string, index: number) => {
 	appKey.zero();
 
 	const validatedSchema = SuccessMessageSignedSchema.safeParse({
-		message: uint8ArrayToBase64(signedMessage)
+		signature: uint8ArrayToBase64(signedMessage)
 	});
 
 	if (!validatedSchema.success) {
diff --git a/holo-key-manager-extension/static/manifest.json b/holo-key-manager-extension/static/manifest.json
index fd7ab35..1911870 100644
--- a/holo-key-manager-extension/static/manifest.json
+++ b/holo-key-manager-extension/static/manifest.json
@@ -1,7 +1,7 @@
 {
 	"name": "Holo key manager",
 	"description": "A browser extension to manage holo keys",
-	"version": "0.0.46",
+	"version": "0.0.47",
 	"manifest_version": 3,
 	"action": {
 		"default_title": "Holo key manager",
diff --git a/holo-key-manager-js-client/.npmignore b/holo-key-manager-js-client/.npmignore
index 9189609..a31c7d0 100644
--- a/holo-key-manager-js-client/.npmignore
+++ b/holo-key-manager-js-client/.npmignore
@@ -1,9 +1,8 @@
 
 node_modules/
 /src/
-types/
-prebuild.cjs
 index.ts
 *.tgz
 tsconfig.json
+config.js
 
diff --git a/holo-key-manager-js-client/README.md b/holo-key-manager-js-client/README.md
index 3ee7a26..d3c3a57 100644
--- a/holo-key-manager-js-client/README.md
+++ b/holo-key-manager-js-client/README.md
@@ -119,3 +119,23 @@ const getGenericErrorMessage = (error) => {
 	);
 };
 ```
+
+## API reference
+
+```typescript
+class HoloKeyManagerExtensionClient {
+    constructor({happId: string, happName: String, happLogo: Url, happUiUrl: Url, requireRegistrationCode: boolean, requireEmail:boolean})
+
+    async signIn(): Promise<pubKey: Uint8Array> {} // throws errors
+
+    async signUp(): Promise<{ email?: string, registration_code?: string, pubkey: Uint8Array }> {} // returns Promise of email and registration code if required in constructor, throws errors
+    async logOut() {} // throws errors
+
+    async signMessage(payload: Uint8Array): Promise<Uint8Array> {} // returns Promise of signature, throws errors
+
+    on('authorized', (Uint8Array, boolean) => void): UnsubscribeFunction {}
+    on('rejected', () => void): UnsubscribeFunction {}
+}
+
+type UnsubscribeFunction = () => void;
+```
diff --git a/holo-key-manager-js-client/package.json b/holo-key-manager-js-client/package.json
index 7a7de15..3290fbb 100644
--- a/holo-key-manager-js-client/package.json
+++ b/holo-key-manager-js-client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@holo-host/holo-key-manager-js-client",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "A JavaScript client API for managing Holo keys",
   "main": "lib/index.js",
   "types": "lib/holo-key-manager-js-client/src/index.d.ts",
diff --git a/holo-key-manager-js-client/src/index.ts b/holo-key-manager-js-client/src/index.ts
index 67c7bf8..c134820 100644
--- a/holo-key-manager-js-client/src/index.ts
+++ b/holo-key-manager-js-client/src/index.ts
@@ -82,11 +82,9 @@ const createHoloKeyManager = ({
 			sender: SENDER_WEBAPP
 		});
 
-		const { message } = parseMessagePayload<SuccessMessageSigned>(response, SIGN_MESSAGE_SUCCESS);
+		const { signature } = parseMessagePayload<SuccessMessageSigned>(response, SIGN_MESSAGE_SUCCESS);
 
-		return {
-			message: base64ToUint8Array(message)
-		};
+		return base64ToUint8Array(signature);
 	};
 
 	const performSignOutAction = async () => {
diff --git a/holo-key-manager-js-client/src/types.ts b/holo-key-manager-js-client/src/types.ts
index c59a002..feb02ca 100644
--- a/holo-key-manager-js-client/src/types.ts
+++ b/holo-key-manager-js-client/src/types.ts
@@ -16,9 +16,7 @@ type SignInSuccessPayload = {
 	pubKey: Uint8Array;
 };
 
-type SignMessageSuccessPayload = {
-	message: Uint8Array;
-};
+type SignMessageSuccessPayload = Uint8Array;
 
 type RawPayload =
 	| { pubKey: string; email: string; registrationCode: string }
@@ -28,7 +26,7 @@ type RawPayload =
 type IHoloKeyManager = {
 	signUp(): Promise<SignUpSuccessPayload>;
 	signIn(): Promise<SignInSuccessPayload>;
-	signMessage: (message: Uint8Array) => Promise<SignMessageSuccessPayload>;
+	signMessage: (message: Uint8Array) => Promise<Uint8Array>;
 	signOut(): Promise<void>;
 };
 export type {
diff --git a/shared/types/message.ts b/shared/types/message.ts
index d0723e0..e8b9556 100644
--- a/shared/types/message.ts
+++ b/shared/types/message.ts
@@ -26,12 +26,14 @@ const HappIdSchema = z.object({
 });
 
 export const SuccessMessageSignedSchema = z.object({
-	message: z.string()
+	signature: z.string()
 });
 
 export type SuccessMessageSigned = z.infer<typeof SuccessMessageSignedSchema>;
 
-export const MessageToSignSchema = SuccessMessageSignedSchema.merge(HappIdSchema);
+export const MessageToSignSchema = HappIdSchema.extend({
+	message: z.string()
+});
 
 export const PubKeySchema = z.object({
 	pubKey: z.string()