Terms of service

1. The service

Kill Switch screens messages going into and out of your AI systems, applies the thresholds and rules you configure, records what happened in an insert-only log, and lets you halt your AI deployments on demand.

We may change how the product works over time. If we remove something you rely on, we will give you at least 30 days notice by email.

2. What Kill Switch is not

This is important, so it is stated plainly. Kill Switch is a safety control, not a guarantee of safety. It scores messages with a language model, and language models are wrong some of the time. It will sometimes allow a harmful message through, and it will sometimes stop a harmless one.

You remain responsible for the behavior of your AI systems, for deciding what your thresholds and rules should be, and for meeting whatever obligations apply to you under the EU AI Act or any other law. Kill Switch gives you a tamper-evident record and a human override, which are two of the things those regimes ask for. It does not make you compliant on its own, and nothing here is legal advice.

Two behaviors deserve particular attention. In monitor-only mode, nothing is ever blocked. In fail-open mode, a message goes through unscreened when the scorer is unavailable, and is logged as unscored. Both are your choices to make, and you own the outcome of making them.

3. Your account

You are responsible for everything done with your API keys, so keep them secret. Admin keys can halt every deployment you run, so treat them accordingly. Tell us promptly if you think a key has leaked, and rotate it in Settings.

You must be at least 18 and able to enter a contract on behalf of your organization.

4. Acceptable use

Do not use the service to break the law, to infringe someone else's rights, or to attack the service itself or the systems it runs on.

Do not send us data you have no right to send, and do not send special categories of personal data unless you have a lawful basis for doing so.

5. Fees

Paid plans are billed monthly in advance, and usage above the included volume is billed monthly in arrears. Fees are exclusive of tax.

If an invoice goes unpaid for 30 days we may suspend the account. We will not delete your log during a suspension for non-payment without telling you first.

You can cancel at any time and it takes effect at the end of the current billing period. We do not refund partial months.

6. Your data

You keep all rights in the content you send us. You grant us only the licence we need to run the service for you.

How we handle that data is set out in the privacy policy, which forms part of these terms. Where we process personal data on your behalf, our data processing addendum applies and is available on request.

7. Availability

We aim for 99.9 percent monthly availability of the screening endpoint on paid plans. Where a service level agreement applies, service credits are your sole remedy for missing it.

Free and trial usage is provided as is, with no availability commitment at all.

8. Warranties and liability

Except as expressly stated, the service is provided without warranty of any kind, including any implied warranty of merchantability, fitness for a particular purpose, or non-infringement.

Neither party is liable for indirect, incidental, special or consequential damages, or for lost profits or lost data. Our total liability arising out of these terms is limited to the fees you paid us in the 12 months before the event giving rise to the claim.

Nothing in these terms limits liability for fraud, for death or personal injury caused by negligence, or for anything else that cannot be limited by law.

9. Indemnity

You will defend and indemnify Fermi against third-party claims arising from your use of the service in breach of these terms, or from content you sent us that you had no right to send.

10. Term and termination

These terms run until the account is closed. Either party may terminate for material breach that is not fixed within 30 days of written notice.

On termination we delete your data in line with the privacy policy. Export your audit records before you close the account if you need to keep them.

11. Governing law

These terms are governed by the laws of the State of Delaware, without regard to its conflict of laws rules. The state and federal courts located in Delaware have exclusive jurisdiction, and both parties consent to venue there.

12. Changes

We may update these terms. If a change materially affects you, we will give at least 30 days notice by email and in the product. Continuing to use the service after that means you accept the new version.