diff --git a/src/WAConnection/5.User.ts b/src/WAConnection/5.User.ts
index f3412ff..fc47951 100644
--- a/src/WAConnection/5.User.ts
+++ b/src/WAConnection/5.User.ts
@@ -22,8 +22,8 @@ export class WAConnection extends Base {
         if (this.state !== 'open') {
             return this.isOnWhatsAppNoConn(str)
         }
-        const { status, jid } = await this.query({json: ['query', 'exist', str], requiresPhoneConnection: false})
-        if (status === 200) return { exists: true, jid: whatsappID(jid) }
+        const { status, jid, biz } = await this.query({json: ['query', 'exist', str], requiresPhoneConnection: false})
+        if (status === 200) return { exists: true, jid: whatsappID(jid), isBusiness: biz as boolean}
     }
     /** 
      * Query whether a given number is registered on WhatsApp, without needing to open a WS connection
@@ -211,4 +211,30 @@ export class WAConnection extends Base {
 
         return result
     }
+    /**
+     * Query Business Profile (Useful for VCards)
+     * @param jid Business Jid
+     * @returns profile object or undefined if not business account
+     */
+    async getBusinessProfile(jid: string) {
+        jid = whatsappID(jid)
+        const {
+            profiles: [{
+                profile,
+                wid 
+            }]
+        } = await this.query({
+            json: ["query", "businessProfile", [
+                {
+                    "wid": jid.replace('@s.whatsapp.net', '@c.us')
+                }
+            ], 84],
+            expect200: true,
+            requiresPhoneConnection: false,
+        })
+        return {
+            profile,
+            jid: whatsappID(wid),
+        }
+    }
 }
diff --git a/src/WAConnection/8.Groups.ts b/src/WAConnection/8.Groups.ts
index aced983..61cd065 100644
--- a/src/WAConnection/8.Groups.ts
+++ b/src/WAConnection/8.Groups.ts
@@ -171,20 +171,33 @@ export class WAConnection extends Base {
         const node: WANode = [ setting, {value: onlyAdmins ? 'true' : 'false'}, null ]
         return this.groupQuery('prop', jid, null, null, [node]) as Promise<{status: number}>
     }
-    /** Get the invite link of the given group */
+    /**
+     * Get the invite link of the given group
+     * @param jid the ID of the group
+     * @returns invite code
+     */
     async groupInviteCode(jid: string) {
         const json = ['query', 'inviteCode', jid]
         const response = await this.query({json, expect200: true, requiresPhoneConnection: false})
         return response.code as string
     }
-    /** Join group via invite code */
-    async acceptInvite(jid) {
-        const response = await this.query({ json: ['action', 'invite', jid], expect200: true })
+    /**
+     * Join group via invite code
+     * @param code the invite code
+     * @returns Object containing gid
+     */
+    async acceptInvite(code: string) {
+        const json = ['action', 'invite', code]
+        const response = await this.query({json, expect200: true})
         return response
     }
-    /** Revokes the current invite link for a group chat */
-    async revokeInvite(jid) {
-        const response = await this.query({ json: ['action', 'inviteReset', jid], expect200: true })
+    /**
+     * Revokes the current invite link for a group chat
+     * @param jid the ID of the group
+     */
+    async revokeInvite(jid: string) {
+        const json = ['action', 'inviteReset', jid]
+        const response = await this.query({json, expect200: true})
         return response
     }
 }