fix(organization): On update, organization metadata shouldn't be stringified unless it's already an object.

packages/better-auth/src/client/config.ts

@@ -4,7 +4,7 @@ import { type WritableAtom } from "nanostores";
 import type { AtomListener, ClientOptions } from "./types";
 import { addCurrentURL, redirectPlugin } from "./fetch-plugins";
 import { getSessionAtom } from "./session-atom";
-import { betterJSON } from "./parser";
+import { parseJSON } from "./parser";
 
 export const getClientConfig = <O extends ClientOptions>(options?: O) => {
 	/* check if the credentials property is supported. Useful for cf workers */
@@ -19,7 +19,7 @@ export const getClientConfig = <O extends ClientOptions>(options?: O) => {
 		...(isCredentialsSupported ? { credentials: "include" } : {}),
 		method: "GET",
 		jsonParser(text) {
-			return betterJSON(text, {
+			return parseJSON(text, {
 				strict: false,
 			});
 		},

packages/better-auth/src/client/parser.ts

@@ -78,7 +78,7 @@ function parseISODate(value: string): Date | null {
 	return isValidDate(date) ? date : null;
 }
 
-export function betterJSONParse<T = unknown>(
+function betterJSONParse<T = unknown>(
 	value: unknown,
 	options: ParseOptions = {},
 ): T {
@@ -169,11 +169,11 @@ export function betterJSONParse<T = unknown>(
 	}
 }
 
-export function betterJSON<T = unknown>(
+export function parseJSON<T = unknown>(
 	value: unknown,
 	options: ParseOptions = { strict: true },
 ): T {
 	return betterJSONParse<T>(value, options);
 }
 
-export default betterJSON;
+export default parseJSON;

packages/better-auth/src/plugins/organization/adapter.ts

@@ -11,6 +11,7 @@ import type {
 } from "./schema";
 import { BetterAuthError } from "../../error";
 import type { AuthContext } from "../../types";
+import parseJSON from "../../client/parser";
 
 export const getOrgAdapter = (
 	context: AuthContext,
@@ -239,7 +240,10 @@ export const getOrgAdapter = (
 				],
 				update: {
 					...data,
-					metadata: data.metadata ? JSON.stringify(data.metadata) : undefined,
+					metadata:
+						typeof data.metadata === "object"
+							? JSON.stringify(data.metadata)
+							: data.metadata,
 				},
 			});
 			if (!organization) {
@@ -248,7 +252,7 @@ export const getOrgAdapter = (
 			return {
 				...organization,
 				metadata: organization.metadata
-					? JSON.parse(organization.metadata)
+					? parseJSON(organization.metadata)
 					: undefined,
 			};
 		},