Analyse the security of your HTTP response headers

Terms of Service

Last updated: February 7, 2026

1. Acceptance of Terms

By accessing or using Security Headers (securityheaders.ai), including its website, API, and all related services (collectively, the "Service"), you agree to be bound by these Terms of Service. If you do not agree to these terms, do not use the Service.

2. Description of Service

Security Headers provides a tool that analyses HTTP response headers of websites and assigns a security grade based on the presence or absence of recommended security headers. The Service is available via a web interface and a programmatic API.

3. Acceptable Use

You agree to use the Service only for lawful purposes. You shall not:

  • Use the Service to scan websites you do not own or have authorization to test, in jurisdictions where such scanning is prohibited.
  • Attempt to overload, disrupt, or interfere with the Service through excessive automated requests, denial-of-service attacks, or similar activity.
  • Use the Service to identify vulnerabilities for the purpose of exploiting them maliciously.
  • Redistribute, resell, or sublicense access to the Service or its API without prior written consent.
  • Reverse engineer, decompile, or attempt to extract the source code of the Service.

4. API Usage

Access to the API requires a valid API key. By using the API, you agree to the following:

  • You are responsible for keeping your API key confidential. Do not share or publish your key.
  • We reserve the right to revoke API keys at any time for any reason, including suspected abuse.
  • Rate limits may be imposed at our discretion. Excessive usage that degrades the Service for others may result in temporary or permanent suspension.
  • API responses are provided "as is" and should not be used as the sole basis for security decisions.

5. Scan Results & Data

  • Scan results are generated automatically and may not be fully accurate or complete. They reflect the state of HTTP headers at the time of the scan.
  • Scanned URLs and their results may be stored for the purpose of displaying recent scan history. We do not guarantee the retention or deletion of any scan data.
  • The grades and scores assigned are based on our own methodology and may differ from other security assessment tools.
  • We do not access, store, or analyse the content of scanned websites — only publicly available HTTP response headers.

6. Intellectual Property

All content, design, code, and functionality of the Service are the property of Security Headers and are protected by applicable intellectual property laws. Scan results generated for URLs you submit are provided for your use but do not transfer any ownership of the Service or its underlying technology.

7. Disclaimer of Warranties

The Service is provided on an "as is" and "as available" basis without warranties of any kind, either express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the Service will be uninterrupted, error-free, or secure, or that scan results will be accurate or complete.

8. Limitation of Liability

To the fullest extent permitted by law, Security Headers and its operators shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to loss of profits, data, or goodwill, arising out of or in connection with your use of the Service, even if advised of the possibility of such damages. Our total liability for any claim shall not exceed the amount you paid to use the Service in the twelve months preceding the claim.

9. Indemnification

You agree to indemnify and hold harmless Security Headers and its operators from any claims, damages, losses, or expenses (including reasonable legal fees) arising from your use of the Service or your violation of these Terms.

10. Modifications

We reserve the right to modify these Terms at any time. Changes will be effective upon posting to this page with an updated "Last updated" date. Your continued use of the Service after changes are posted constitutes acceptance of the revised Terms.

11. Termination

We may suspend or terminate your access to the Service at any time, with or without cause, and with or without notice. Upon termination, all provisions of these Terms that by their nature should survive will survive, including intellectual property provisions, disclaimers, and limitations of liability.

12. Governing Law

These Terms shall be governed by and construed in accordance with applicable law, without regard to conflict of law principles. Any disputes arising under these Terms shall be resolved in the courts of competent jurisdiction.

13. Contact

If you have questions about these Terms, please contact us at our contact page.