Terms

Keystone Context Systems, Inc., trading as Keystone Computer (“Keystone”, “we”, “us”), makes Alexandria, the software that gives a person or an organization a private brain of their own, and licenses it. “You” means the person or organization that installs, licenses, or uses it.

Keystone Context Systems, Inc. is the contracting party on every license and invoice, and is the entity these terms are made with. Keystone Computer is the name the business trades under.

Where you and Keystone have signed a separate license agreement, order form, or statement of work, that document governs and these terms fill the gaps. Where a term conflicts, the signed document wins.

Alexandria is downloaded from this site and installed on a Mac you control. Nothing is ordered, shipped, or commissioned: the download is the product, and the install happens in a conversation on your own machine.

Where we issue you a licence file, a Keystone key for metered model access, or run a hosted Library for you, the fees for those are the ones we agree with you in writing. A price shown on this site or quoted in conversation is indicative until confirmed in writing, and a quotation is an invitation to order, not an offer we are bound to accept.

Prices exclude taxes, which are yours to pay where they apply.

The Alexandria software is licensed, not sold. Subject to these terms and to payment of any fees due, we grant you a non-exclusive, non-transferable license to run the software on machines you control, for your own personal or internal business purposes, for as long as your license is in effect.

The full terms of that license are set out in the Alexandria Software License Agreement, published at keystone.computer/license: what a Keystone license file entitles you to, how metered model use works, and what the software’s output is. This section summarizes it; that agreement governs the software itself.

You agree not to:

• sublicense, resell, rent, or provide the software to third parties as a service, except to your own affiliates and contractors acting for you and bound to these terms;
• reverse engineer, decompile, or disassemble the software, except to the extent that applicable law expressly permits despite this restriction;
• remove, obscure, or alter any proprietary notice, license file, or brand mark;
• circumvent licensing, metering, or entitlement controls, or share license credentials outside your organization;
• use the software to develop a competing product.

We retain all intellectual property rights in the software and our documentation. Nothing here transfers ownership of any of it to you.

You own everything your organization puts into Alexandria and everything its agents produce: the vault, its files, its history, and the work product. We claim no ownership of it and no license to it.

Alexandria is built so that we do not need access to it. The vault lives on your own Mac, or, for a hosted Library, on a host we run for you and do not read in the ordinary course. We do not receive a copy of it in the ordinary course of running the product, and we do not use your content to train models. How the narrow exceptions work is set out in the Privacy notice: support sessions you invite us into, and the metadata created when work is routed through our gateway.

Alexandria runs on the AI you already use, through your own Claude or ChatGPT subscription and under that provider’s terms. Where the Library’s own scripts call a model, they do so with your own key or, where we issued you one, through the Keystone gateway. The choice is yours, per Library.

When you route through the gateway, your requests are relayed to third-party model providers. Their acceptable-use policies apply to that traffic in addition to these terms, and their availability is not something we control. Keystone sells product functionality; it does not resell raw access to any provider’s models.

Gateway access is metered and subject to the budgets and rate limits attached to your keys. We may suspend a key without notice where it is being used abusively, where it appears compromised, or where an account is materially overdue, and we will tell you when we do.

You agree not to use Alexandria or the gateway to:

• break the law, or infringe anyone’s intellectual property or privacy rights;
• generate or distribute material that sexually exploits children, incites violence, or harasses people;
• develop weapons, or conduct surveillance that violates applicable law;
• attack, probe, or degrade the gateway, another tenant, or any third-party system;
• misrepresent AI-generated output as human-authored where doing so would deceive someone to their detriment.

You are responsible for what your users and your agents do with the system, and for the instructions and data you put into it.

Language models are probabilistic. Alexandria can produce output that is wrong, incomplete, out of date, or confidently mistaken, and it can misread the material it is given. This is a property of the technology, not a defect we can engineer away.

Output is not legal, financial, medical, tax, or other professional advice. Keep a human in the loop for consequential decisions, and review output before you rely on it, publish it, or act on it. You remain responsible for decisions your organization makes, whether or not an agent contributed to them.

The Library runs on your own Mac, so it does not depend on us to keep working. The gateway, the relay, and a hosted Library do, and we do not commit to an uptime figure for them unless a signed agreement says otherwise. The status page is published for information and is not a service-level commitment.

Support, response targets and update entitlements are as described in any written agreement we have with you; otherwise, updates are released through this site and picked up by the Library’s own update check. We may change, improve, or discontinue features over time; where a change would materially reduce functionality you rely on, we will give reasonable notice.

We warrant that the software will perform substantially as documented for any warranty period stated in a written agreement with you. The free download carries no such period: it is provided as it is, and a release is tested before it is published.

This warranty does not cover problems caused by misuse, unauthorized modification, use outside the documented conditions, or hardware or software we did not supply. Your remedy is a fix, a replacement, or a refund of what you paid for it, at our option.

Except as stated in this section, and to the fullest extent the law allows, the software and services are provided “as is” and we disclaim all other warranties, express or implied, including merchantability, fitness for a particular purpose, and non-infringement.

To the fullest extent permitted by law, neither party is liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits, lost revenue, lost business, or lost or corrupted data, even if advised that they were possible.

Each party’s total liability arising out of or relating to these terms is capped at the amounts you paid to Keystone under the relevant agreement in the twelve months before the event giving rise to the claim.

Nothing in these terms limits liability for fraud, fraudulent misrepresentation, death or personal injury caused by negligence, or anything else that cannot lawfully be limited. Because some jurisdictions do not allow certain exclusions, parts of this section may not apply to you.

Each party may learn confidential information about the other. Each agrees to protect it with at least reasonable care, to use it only to perform under these terms, and not to disclose it except to people who need it and are bound to equivalent obligations. This does not cover information that is public through no fault of the recipient, was already known, or is independently developed, and it does not prevent disclosure required by law.

Either party may terminate for material breach that is not cured within thirty days of written notice. On termination of a license, you stop using the software; your vault remains yours, as plain files on your own machine. Sections that by their nature should survive do so: ownership, confidentiality, disclaimers, liability, governing law.

You agree to comply with applicable export control and sanctions laws, and confirm you are not located in, or acting for anyone in, an embargoed jurisdiction or on a restricted-party list.

We may update these terms. The current version is always at this address, with the date it was last updated. Material changes take effect for existing licensees at the start of the next renewal, or thirty days after we give notice where there is no renewal. Continuing to use the software after a change takes effect means you accept it.

These terms are governed by the laws of the State of New York, without regard to its conflict-of-laws rules. The parties submit to the exclusive jurisdiction of the state and federal courts sitting in New York County, New York. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

If a provision is held unenforceable, the rest stays in force. A failure to enforce a provision is not a waiver of it. You may not assign these terms without our consent; we may assign them to an affiliate or in connection with a merger or sale of assets.

Questions about these terms, and formal notices, go to hello@keystone.computer, or by post to Keystone Context Systems, Inc., 250 W 55th St, New York, NY 10019, United States.