Terms of service

The agreement between you and us. Written to be read once and understood, which mostly means saying what happens rather than reserving the right to do anything.

Last updated 29 July 2026.

1. Who this is between

These terms are between ThirteenTabs LTD (“we”, “us”), a company registered in England & Wales under number 17326399, and you — the person or organisation using Skiplink. If you are agreeing on behalf of a company, you are confirming you may bind it.

Using the service, including the free scanner without an account, means these terms apply.

2. What the service is

Skiplink runs the open-source axe-core engine against web pages and returns structured findings, with tooling to fail a build on findings you have not already accepted. That is the whole of it.

3. What we do not warrant, stated plainly

We do not warrant that using Skiplink makes anything accessible, conformant or legally compliant. Automated testing detects a subset of WCAG success criteria. A clean result means no automatically detectable violations were found on the pages scanned, at the time they were scanned. It is not a statement of conformance with WCAG, the European Accessibility Act, the Equality Act, the ADA, Section 508, EN 301 549 or anything else.

Our own reference lists which criteria automation can and cannot detect: 32 of the 55 Level A and AA criteria cannot be checked by any scanner. We publish that because a vendor's claims are the actual liability here — for you as much as for us. If you need a conformance statement, you need a qualified human audit, and we will say so every time you ask.

Beyond that: the service is provided as-is. We do not warrant that it will be uninterrupted, that every finding is correct, or that it will find every finding.

4. Only scan what you are authorised to scan

This is the obligation that matters most, so it is not buried in an appendix.

When you submit a URL, our infrastructure loads that page in a browser. You must have the right to do that: the site is yours, or you have the operator's permission, or it is genuinely public and you are scanning it in a way that does not burden it. You must not use Skiplink against a site to probe it, to enumerate it, to load it repeatedly at volume, or as any part of an attack.

The acceptable use policy sets out the specifics and forms part of these terms. Breaking it is the one thing we will suspend an account for without notice.

5. Your account

Keep your API keys and password to yourself; anything done with your key is treated as done by you. Tell us promptly if a key leaks and we will help you rotate it. You are responsible for what the people you invite do with the account.

6. This is a business service

Skiplink is sold to businesses — companies, partnerships, sole traders and other organisations acting in the course of a business — and the terms below are written on that basis.

If you are in the UK or the EEA and you are a consumer rather than a business, you have statutory rights that no contract can remove, including a 14-day right to cancel a distance contract. Nothing here affects them. In particular, the “no refunds for part-months” below does not apply to you: tell us within 14 days and we will refund you, minus the value of any scans you have already used, which is what the regulations allow us to charge for a service you asked us to start immediately.

7. Plans, payment and quotas

Plans and prices are on the pricing page and form part of these terms. Paid plans are monthly, in advance, with no minimum term — cancel and it stops at the end of the period you have paid for. We do not refund part-months, and we do not send an invoice you have to chase; the receipt arrives by email.

Each plan includes a number of scans a month. Going over is charged at the published overage rate if your plan allows overage, and refused with a 429 if it does not. Refused is the default: we would rather stop than bill you a surprise.

We may change prices with 30 days' notice by email. A price change never applies to a period you have already paid for.

Prices exclude VAT and any other tax, which is added where applicable.

8. Your data

Your scan results are yours. We hold them to provide the service, we do not sell them, we do not use them for advertising, and we do not use them to train machine-learning models. What we store and for how long is in the privacy notice; where we act as your processor, the data processing addendum applies and is incorporated into these terms without you having to sign it separately.

You can export your data or delete your account at any time. Deleting means deleted, apart from the usage records we must keep for accounting, reduced to counts.

9. Our software, and axe-core

The service, this site and our client libraries are ours or our licensors'. The client libraries — the CLI, the adapters and the MCP server — are published under the MIT licence and you may do as that licence permits.

Skiplink uses axe-core, unmodified, distributed by Deque Systems under MPL-2.0. AXE and AXE-CORE are trademarks of Deque Systems, Inc. Our use of axe-core does not imply endorsement by or affiliation with Deque. The full attribution list is on the third-party licences page.

10. Availability

We aim for high availability and have no contractual uptime commitment. If that is not good enough for what you are building, say so before you rely on it, and be sceptical of anyone offering a number they cannot show you the maths for.

Scans are asynchronous by design. A scan that could not run returns a distinct error rather than a pass, and the CLI exits with a code that distinguishes “this page has a new violation” from “we could not find out”, so your pipeline can treat them differently.

11. Liability

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

Subject to that: neither of us is liable to the other for indirect or consequential loss, lost profits, lost revenue, or lost or corrupted data. Our total liability arising out of or in connection with these terms is limited to the greater of the fees you paid us in the 12 months before the claim, or £100.

Specifically, and following from section 3: we are not liable for any claim, proceeding or penalty arising from the accessibility of your website, whether or not a Skiplink scan reported it. We provide detection. The state of your site is yours.

12. Suspension and termination

You can stop at any time from the dashboard or by emailing us.

We may suspend or terminate an account if it breaches the acceptable use policy, if payment fails and stays unpaid after we have told you, or if we are legally required to. Except for acceptable-use breaches — where the harm is to someone else and waiting makes it worse — we will tell you first and give you a chance to fix it.

If we discontinue the service, we will give at least 90 days' notice, refund any unused prepaid time, and keep exports working throughout. A tool that holds a baseline your builds depend on should not disappear on a Friday.

13. Changes to these terms

We will email account holders at least 30 days before a change that materially affects them. Continuing to use the service after that means the new terms apply; if you would rather not, cancel and we will refund unused prepaid time.

14. Law

These terms are governed by the law of England & Wales, and its courts have exclusive jurisdiction. If any part of these terms is unenforceable, the rest stands.

These terms, the acceptable use policy, the data processing addendum, the privacy notice and the pricing page are the whole agreement between us on this subject.

15. Contact

[email protected]. A person reads it.