Terms of Service
Last updated 30 October 2026
Nucle.OS is in early access. There is a free trial, and paid plans after it. These terms describe what you can expect from us and what we expect from you. They are deliberately short and we have tried to avoid language designed to be skimmed past.
The agreement
By creating a workspace you agree to these terms. They are between you (or the organisation you are acting for) and SP Business and Investment Group Ltd. Nucle.OS is one of that business’s products.
SP Business and Investment Group Ltd is a company registered in England and Wales under number 14790177, with its registered office at 86–90 Paul Street, London, EC2A 4NE.
If you are agreeing on behalf of a company, you confirm you are allowed to bind that company.
Nucle.OS is sold for business use only. By agreeing, you confirm you are using it for your trade, business or profession, and not as a consumer.
Early access - what that means
Nucle.OS is not a finished product. Right now that means:
- Your first workspace starts with a 14-day free trial. No card is asked for to begin, and nothing is held back during it. Further workspaces you own start on a paid plan.
- After 14 days, a workspace without a subscription is paused. Nothing is deleted while it is paused: your core records can be exported from Settings → Export, and subscribing restores everything. A workspace left paused for 12 months is deleted, and we email its owners and admins 30 days before.
- Features may change, and some advertised on the marketing site are still being built. Where something does not exist yet we say so.
- There is no uptime guarantee or service level agreement. We work to keep it up; we do not promise a number we cannot yet stand behind.
- We may contact you about how you are using it. That is the point of early access.
Your first workspace starts with a fourteen-day trial and no card. After that it needs a subscription to keep editing. We will not convert a workspace into a paid one without you actively choosing a plan and entering payment details yourself.
If a trial ends and you do not subscribe, the workspace is paused: its pages are replaced by a prompt to subscribe, and you can still export your core records (clients, contacts, deals, projects, tasks, lists, leads and a document index) from Settings → Export. Subscribing brings everything back as it was. A workspace that stays paused for 12 months is permanently deleted, with its files; we email its owners and admins at least 30 days before, so there is time to subscribe or export.
What you pay
Plans are billed per workspace or per seat, monthly or yearly, in advance:
- Solo - £24 ($29) a month for one person, with up to 2 more people at £12 ($15) a month each.
- Studio - £35 ($45) per seat, per month, minimum three seats.
- Agency - £55 ($69) per seat, per month, minimum eight seats.
Prices exclude VAT. Any tax that applies is added at checkout, based on where your business is. Enter your VAT number there and, where the law allows, VAT isn't charged.
Each plan includes connected mailboxes: 3 on Solo, and 2 per seat on Studio and Agency, shared across the workspace. Extra mailboxes are £5 ($6) a month each. Add-ons are billed with your plan, monthly or yearly, and changes are prorated. A sending domain of your own is included on any paid plan, one per workspace, and is removed when the subscription ends.
A seat is a person who can sign in to the workspace. Adding someone mid-month is charged pro rata for the rest of that period; removing someone credits the remainder. Changing to a larger plan takes effect immediately and is prorated. Changing to a smaller one takes effect at the end of the period you have already paid for, so you keep what you bought.
A subscription renews automatically at the end of each monthly or yearly period until you cancel it. You can cancel at any time from Settings → Billing. Cancelling stops the next renewal - it does not cut the period short, and we do not refund the remainder of a period you have already started. When the period ends, the workspace is paused in the same way as an ended trial. If you believe you have been charged in error, write to us and we will look at it properly.
We may change our prices. We will email the account owner at least 30 days before a new price applies, and it applies from your next renewal after that, never to a period you have already paid for.
If a payment fails, we will tell you and retry it. If it still has not been paid after the retries, the workspace may be paused until it is.
Subscriptions and request packs are sold to you through an affiliate of Stripe acting as merchant of record, shown at checkout and on your receipts as Onelink. It takes the payment, issues the receipt or invoice, and adds any tax due. Its own refund policy applies alongside these terms, and nothing here takes away a refund it grants.
Usage and allowances
Each plan includes a monthly allowance for the things that cost us money to run: AI assistant requests, call recording (including the transcription of recorded meetings) and outbound email. Settings → Billing shows what a workspace has used against its allowance, updated as you go.
The AI assistant is included. Each plan includes a monthly allowance of assistant requests that run on our own AI provider account: 150 per billable seat on Studio and Agency, pooled across the workspace, and 200 on Solo. Trials receive the same allowance; a read-only workspace (a trial that has ended, or a cancelled subscription) receives none, though requests it bought in a pack remain usable. A request is one answer from the assistant, one web research run, one meeting summary, or one draft or summary made with an AI button inside a page. When the allowance for a calendar month is used up, the assistant stops on our account until the next month begins. There is no metered AI overage: we do not charge for AI use beyond the allowance.
Your own API key is optional. You may add an API key of your own for Anthropic, OpenAI or Google. Requests made on your own API key do not count against the allowance and are not limited by us, other than by any spending limit set in Settings → AI; your provider bills you directly under your own agreement with them, and we never add a charge of our own on top. Voice conversations run on an OpenAI key you supply, and contact enrichment on your own Apollo or Hunter account; we never charge for either.
Request packs. You may buy prepaid packs of additional assistant requests (500 per pack). A pack is a single payment taken when you buy it, is used only after the month’s allowance has run out, and does not expire. Unused requests are not refunded except where the law requires.
Going over an allowance. Going over does not switch anything off. Two allowances are charged for when a workspace goes over them, at the end of the month, on the next invoice:
- Call recording, at 2p (3¢) a minute beyond the plan’s minutes: 300 a month on Solo, and 500 on Studio and 750 on Agency per billable seat, pooled across the workspace.
- Outbound email, at 1p (1¢) per 10 emails beyond the plan’s sends: 1,000 a month on Solo, 10,000 on Studio and 50,000 on Agency.
Overage never applies to the AI assistant or to anything run on your own API key or account. If we change an overage rate, or start charging for another allowance, we will email the account owner at least 30 days before it applies.
The AI assistant and other AI features
AI features (the assistant, meeting summaries, drafts and suggestions) can be wrong. Check what they produce before you rely on it or send it to anyone. Anything the assistant would send or delete is shown to you for approval first.
You are responsible for what you ask the assistant to do and for how you use what it produces. Prompts and the records the assistant reads go to the AI provider that answers the request, as our Privacy Policy describes. We never use them to train models. For the assistant use included in your plan they go to Anthropic under our account, and Anthropic does not train its models on them. If your workspace connects its own AI provider key, they go to that provider under your workspace’s account, and your terms with that provider decide whether it may use them for training.
What the AI features produce is a draft for you to check. It is not legal, financial, tax or other professional advice, even where it is written into an agreement, a proposal, an invoice or a contract. You decide what to keep, and you are responsible for anything you send, publish or sign, and for anything your clients agree to, whether or not the AI helped write it. A draft made with an AI button inside a page is kept only when you choose to keep it, and goes to no one unless you send it yourself.
Connecting your own AI apps
You can connect your own AI app, such as Claude or ChatGPT, to a workspace through our connector. A connected app acts as you: it sees what you can see, can make the changes described in Settings → Connected apps, and anything it does counts as done by you. You are responsible for which apps you connect and for what you ask them to do.
Your use of the app is governed by your agreement with its provider. We are not responsible for the app, or for what it or its provider does with what it reads. Connections are limited to 60 actions a minute each and 5,000 a day per workspace. We may change those limits, and may suspend a connection that is misused or puts the service at risk. A workspace’s owner or an admin can switch connected apps off.
Your own accounts with other services
Some features work through accounts you hold with other companies: your Google account for email and calendar, your own Stripe account for taking payments from your clients, and any API keys you add. Your use of those is also governed by your agreement with that company.
If you connect LinkedIn or WhatsApp, Nucle.OS reaches that account through Unipile, a messaging service, not through LinkedIn’s or WhatsApp’s official APIs. The account stays yours and under their terms, and LinkedIn or WhatsApp can still restrict or suspend it; we can’t prevent that. How long the messages are kept is in our Privacy Policy.
When your clients pay you through Nucle.OS, the payment goes to your own Stripe account under your agreement with Stripe. We are not a party to it, we never hold your money, and we take no fee from it. You are responsible for your own invoices, refunds and disputes with your clients.
Your account
You are responsible for what happens under your account, including keeping your sign-in details secure and managing who you invite into your workspace.
You must be at least 16 and must give us accurate details. If you invite colleagues, you are responsible for their use of the service.
Your data stays yours
You own everything you put into Nucle.OS. We claim no rights over it beyond what we need to run the service for you - storing it, backing it up, showing it to the people you have given access.
We will not sell it, and we will not use it to train machine learning models.
You can export the main record types at any time from Settings → Export. If you need something the export does not cover, ask us.
Where you put other people’s personal data into the product - your clients and their contacts - our Data Processing Agreement applies and forms part of these terms.
Our software
We own Nucle.OS and everything we build into it. While your subscription or trial is active, you and the people you invite may use it for your business. You may not copy, resell or reverse-engineer it.
If you send us feedback or suggestions, we may use them without any obligation to you.
What you may not do
Do not use Nucle.OS to:
- Send unsolicited bulk email. Sequences and campaigns are for people who have a relationship with you or a lawful basis for contact. In the UK, that means business email to people at companies, with a clear opt-out in every email, and nothing to sole traders or other individuals who haven’t agreed to hear from you. You decide who is on your lists and confirm it before a campaign launches. Spam damages the sending reputation every customer shares.
- Break the law, or infringe someone else’s rights.
- Upload malware, or attempt to access a workspace that is not yours.
- Probe, scan or load-test the service without asking us first. Ask - we will usually say yes.
- Resell the service without a written agreement.
If you do any of these we may suspend the workspace. Where the situation allows it we will contact you first.
Availability and support
We aim to keep Nucle.OS running and to fix problems quickly, but during early access we do not offer a guaranteed uptime figure or a formal response time.
Support is by email at hello@getnucleos.com and through the in-app support form. It reaches the people who build the product.
Ending it
You can stop using Nucle.OS at any time and delete your workspace from Settings → Danger zone. Deletion is immediate and permanent, including your files - export first if you want a copy.
We may end this agreement if you materially breach these terms, or if we discontinue the service. If we discontinue it we will give you reasonable notice and time to export your data.
Liability
Nucle.OS is provided as it is. To the extent the law allows, we do not give warranties that it will be uninterrupted or error-free, and we are not liable for indirect or consequential loss, lost profits, or lost data beyond what we can restore.
Our total liability to you is limited to whatever you have paid us in the twelve months before the claim, or £100 if that is greater - so a workspace still inside its free trial is covered by the £100 figure.
Nothing here limits liability for death or personal injury caused by negligence, for fraud, or for anything else that cannot lawfully be limited. The limit above does not apply to fees you owe us.
If someone brings a claim against us because of content you put into Nucle.OS or because you used it unlawfully (for example to send unsolicited email or to process personal data without a lawful basis), you will cover our reasonable costs of dealing with it.
Confidentiality
We treat everything in your workspace as confidential. We access it only to provide the service, to give support you ask for, to keep the service secure, or where the law requires it.
Changes to these terms
We may update these terms. For material changes we will email account owners at least 30 days before they apply and update the date at the top. If you continue using the service after they apply, that is acceptance. If you would rather leave, cancel before then, export your data and delete your workspace.
Law
These terms are governed by the laws of England and Wales, and the courts of England and Wales have exclusive jurisdiction.
General
- These terms, the Data Processing Agreement and the Privacy Policy are the whole agreement between us about Nucle.OS.
- Neither of us is responsible for a failure caused by something outside reasonable control, such as an outage at a provider we depend on.
- If a court finds part of these terms unenforceable, the rest still applies.
- You may not transfer this agreement without our agreement. We may transfer it to a business that takes over Nucle.OS, and will tell you if we do.
- Nobody other than you and us has rights under these terms.
- We send notices to the account owner’s email address. You can send yours to hello@getnucleos.com.
Questions about this document? hello@getnucleos.com