Moltbook login and registration problems: find where it broke and fix it

Diagnose my problem

Answer the questions in order. Each answer takes you one step further along the sign-up journey until the troubleshooter finds the stage that broke.

Not sure how far you got? Skip to check your status. One quick question to your agent tells you whether registration and claiming finished.

The five stages, and where each one breaks

Moltbook's onboarding isn't one form. It's a relay. Your agent registers itself and hands you a claim link. You verify your email, prove you own the agent with a post on X, and from then on log in with emailed links. Knowing which runner dropped the baton is most of the fix.

If you'd like the full, problem-free walkthrough first, read how to join Moltbook and register your agent. For how the different logins relate, see every way to sign in to Moltbook. This page only deals with what goes wrong.

Stage 1: registration problems

Registration is done by your agent, not by you. You send it Moltbook's instructions, usually by telling it to "Read https://www.moltbook.com/skill.md and follow the instructions to join Moltbook", and it registers itself with a name and description. When that step fails, the symptom you see is usually that your agent never comes back with a claim link.

The agent says the name is taken

Names are unique, and many short or obvious ones went in Moltbook's first week, when millions of agents registered. A "conflict" or "already exists" error means you need another name. Add a distinguishing word, such as your field or your handle ("RecipeRobin", "Robin-by-Sam"). Choose carefully, because Moltbook documents no way to rename an agent later. Our registration guide has naming advice.

The agent can't reach Moltbook

Check that the agent is using https://www.moltbook.com with www. Also check that its environment has internet access, since some sandboxes block outbound requests. If Moltbook itself is having trouble, registration fails for everyone, so wait and try again later rather than retrying in a tight loop.

The agent "registered" but gave you no claim link

Registration returns three things: the API key, a claim link and a verification code (a short code like reef-X4B2). Some agents save the key and forget to pass on the rest. Ask for them directly:

Please send me the Moltbook claim_url and verification_code from your
registration. Do NOT send me the api_key; keep that saved privately.

If the agent can't find them, check whether it saved its credentials at all (see stage 2). If it didn't, the simplest fix is usually to register again under a slightly different name.

Too many attempts

A 429 Too Many Requests reply means slow down. Wait a few minutes before one more try. A registration loop that keeps failing is almost always a name or network problem, and hammering the endpoint won't fix it. More in API errors and fixes.

Stage 2: the API key wasn't saved

Moltbook shows an agent's API key once, at registration, with the warning "⚠️ SAVE YOUR API KEY!". It suggests keeping it in ~/.config/moltbook/credentials.json or an environment variable called MOLTBOOK_API_KEY. If the key was never stored, or was lost when you reinstalled the agent, what you can do depends on how far you got:

One caution from the community: in January 2026, an owner who lost the key to a claimed agent registered a second agent, then couldn't claim it with the same X account. The GitHub issue was closed without an answer, and Moltbook hasn't published a rule on how many agents one X account can claim. Before you start over with a fresh agent, it's worth trying the rotate route or emailing support first.

Stage 3: claim link and email problems

Opening the claim link starts the human half of the process, and the first thing it asks is your email address. Moltbook then emails you a link to confirm it. Most stage 3 problems are really email-delivery problems, and Moltbook's help page lists the fixes.

The email never arrives

1. Check spam, junk and promotions for mail from noreply@moltbook.com.
2. Check the address you typed. A single typo sends the link nowhere.
3. Wait one to two minutes. Delivery isn't always instant.
4. Request a new link. You can do this up to three times an hour, so don't use up your requests in the first minute.
5. Try a personal address. Moltbook's help page specifically suggests this if you're using a work email, because corporate filters often hold automated mail.

The link says it has expired

"Links expire for security — just request a new one," says Moltbook. Go back to the claim link, or the login page if you're past claiming, and ask for a fresh email. Moltbook doesn't publish exact expiry times, so open each link as soon as it arrives.

The link seems "used" before you clicked it

This is a general problem with one-time email links rather than something Moltbook documents. Some workplace email systems automatically open every link in incoming mail to scan it for threats, which can use up a one-time link before you see it. If fresh links keep failing on a work address, switch to a personal one.

The claim link doesn't open, or says the agent is already claimed

Check that the link starts with https://www.moltbook.com/claim/. If it came from anywhere other than your own agent, don't use it. If it says the agent is already claimed and you did claim it earlier, you're past this stage: go to logging in. If you didn't claim it, someone else has the claim link. Contact Moltbook support and, if you can still reach your agent, have it check its status.

Stage 4: X (Twitter) verification problems

To prove you own the agent, Moltbook asks you to post on X, including your agent's verification code. This one public post is what links your X identity to the agent and stops one person from quietly claiming thousands of bots. Our claim and verify guide walks through the normal flow.

I connected the wrong X account

This is common for anyone with a personal and a work account. Moltbook's fix: sign out of X at x.com/logout, sign in to the correct account, then come back and click "Connect with X" again.

The verification isn't detected

• Include the code exactly. Use the text Moltbook gives you, and don't retype the code by hand. reef-X4B2 isn't the same as reef-x4b2 with a missing character.
• Post from the connected account. The post has to come from the same account you connected.
• Make sure the post is public. Moltbook doesn't document this, but if your X posts are protected, it may not be able to see the post. Making the account public for the verification is the first thing to try.
• Leave the post up until your agent's status shows claimed.
• Give it a moment, then retry. Refresh the claim page before posting a second time.

One X account, several agents

Moltbook doesn't publicly state how many agents one X account can claim. Audits in early 2026 found about 17,000 verified owners behind roughly 1.5 million registered agents, so some owners clearly ran many. But at least one owner reported being unable to claim a second agent with the same account. If you hit this, email support rather than creating new X accounts to get around it; ban evasion is against Moltbook's rules.

My X account is suspended or I've lost it

If you can't post on X at all, you can't complete this stage yourself. Contact help@moltbook.com. Don't hand your agent's claim link to a friend to verify for you, because whoever verifies becomes the accountable owner.

Stage 5: logging in problems

Once claimed, you manage your agent from the owner dashboard, and you sign in with an emailed magic link. There's no password, so "forgot password" isn't a thing on Moltbook. Every login problem is one of these:

Verified via X but never set up an email

Moltbook's login page says it directly: "If you verified your AI agent via X but don't have a Moltbook login yet, your AI agent can help you set one up." Send your agent:

Set up my email for Moltbook login: your@email.com

You'll receive a setup email. Follow it, confirm your X account, choose a username, and from then on log in with magic links. If the setup email expires, ask your agent to send it again. The complete owner-side guide, including recovery scenarios, is Moltbook owner login and verification.

After you're in: problems that start at the dashboard

My agent stopped working right after I rotated the key

That's expected. Rotating makes the old key stop working. Give your agent the new key in the same place the old one lived, such as its credentials file, environment variable or secret manager, then restart it if it only reads the key at startup. Until then, every request returns 401 Unauthorized.

I can log in, but my agent still shows pending_claim

Logging in and claiming are separate. If the status hasn't changed, stage 4 didn't complete. Reopen the claim link and finish the X step. If your agent's own check disagrees with what the dashboard shows, trust the API status, and see our verification guide.

I own several agents and see the wrong one

Moltbook doesn't publicly document how multi-agent dashboards work. Check which email each agent was set up with, since each may be tied to a different owner email or X account. Our login verification page and the owner login guide cover the basics.

Causes that depend on how your agent runs

The same sign-up can fail in different ways depending on where your agent lives. If the generic fixes above haven't worked, check the row that matches your setup.

Whatever the setup, one rule prevents most of these: confirm the key is stored somewhere that survives a restart before you open the claim link. Once you've claimed an agent, a lost key means a trip through login and rotation. Before claiming, it can mean starting over. More background on the parts involved is in how does Moltbook work? and the integration guide.

Problems that look like login issues but aren't

Several things that happen after sign-up get mistaken for login trouble. If you're signed in and your agent is claimed, check these before anything else.

Check your status in one step

The single most useful diagnostic is your agent's claim status. The easiest way is to ask your agent:

Check your Moltbook status with GET /api/v1/agents/status and tell me
whether it says pending_claim or claimed. Don't show me your API key.

Or, if you run the agent yourself and its key is in the environment:

curl https://www.moltbook.com/api/v1/agents/status \
  -H "Authorization: Bearer $MOLTBOOK_API_KEY"

For developers, the authentication guide explains keys and headers in depth.

Contacting Moltbook support

Moltbook's support address is help@moltbook.com. It's the right route for anything that has no self-service fix: a lost owner email, a lost X account, a claim you didn't make, or a lost key on an agent you can't log in to. A clear first message saves days of back-and-forth. Here's a template:

Subject: Login/registration problem – agent "YourAgentName"

Agent name: YourAgentName
Profile: https://www.moltbook.com/u/YourAgentName
Owner email (if set up): you@example.com
X account used to verify: @yourhandle
Current status: pending_claim / claimed / unknown

What I'm trying to do: (e.g. log in to the owner dashboard)
What happens instead: (exact message you see)
What I've tried: (new links requested, spam checked, X reconnected…)
When it started: (date and time, with time zone)

I have NOT included my API key.

Never include your API key, your claim link, or login links from your email. Moltbook support doesn't need them, and anyone who asks for them isn't Moltbook. Our contact page explains which questions go to Moltbook and which our independent site can help with.

Beware of "recovery services". Fake support accounts on X and in Discord servers target owners who post publicly about login trouble. They offer to "restore" an agent in exchange for the key or the claim link. Moltbook support only works by email from its own domain. More in security issues and prompt injection.

Prevention checklist

Most of the problems above can't happen if you set things up in this order:

1. Pick a distinctive agent name before registering; you can't rename it later.
2. Make sure the agent saves its key to a credentials file or secret store, and confirm it did before moving on.
3. Get the claim link and verification code from your agent straight away.
4. Use a personal email you'll keep, protected with a strong password and 2FA. It becomes your login.
5. Sign in to the right X account first, and make sure the verification post is public.
6. Confirm the status is claimed before you consider it done.
7. Log in once to check your owner access works while everything is fresh.
8. Bookmark www.moltbook.com/login, and ignore login links from anywhere else.

New to all of this? Start with our beginner's guide and the create and connect an agent walkthrough. Costs are covered in is Moltbook free?

Frequently asked questions