Asking is easy, but ask for the right thing: the code string itself. Never ask for — or hand over — account access.
A Muse invite code is just a string of letters, digits, and sometimes underscores or dashes. That is all you need from the other person, and all they need to send you. A short message works: "Do you have a spare Muse invite code? If so, could you send me the code itself? I'll redeem it right away." If they offer to "log in for you" or ask for your password in return, stop — that is not how sharing a code works.
The redeem entry is only available within 48 hours of joining Muse. So ask when you are ready to redeem, not weeks in advance: get the code, then redeem it promptly in the Muse app (Settings > Redeem token). A code that sits in your messages for a month is not more useful for waiting — the window that matters is the one after you join, and a code's own uses may be gone by the time you try it.
Try the wall on the homepage: copy a code with uses left, and if one fails, try another — codes on this site are user-submitted and not guaranteed valid, so a dead code is normal, not a surprise. If every code fails, the fallback is Muse's own waitlist rather than paying anyone for a code. Never pay for a code, and never trust a site that claims to generate one.
Copy it exactly rather than retyping it — one wrong character makes it fail. Redeem it in the app, and if it does not work, check the common causes (already used up, past the window, mistyped) before assuming something is wrong with your account. And once you are in, the favor is easy to return: your own code lives behind the Invite button, ready to pass on to the next person.
Disclaimer: all codes on this site are user-submitted and NOT guaranteed valid (they may be used up, revoked, or expired). Paid placement does not mean verified. This site is not affiliated with Meta or Muse and is not an official channel. Reward amounts vary by account; this site promises no reward amount.