Crux Terms of Use

Version 1.0, effective September 16, 2026. These terms are between you and Jonathan Cooper, the individual who operates Crux (cruxcall.com) while a company is being formed. Contact: jon@cruxcall.com. If you do not agree to these terms, do not use Crux.

1. Who Crux is for

• Professors and instructors ("professors") who set up interviews for their own courses, review the results, and assign grades.
• Students who take an interview using a link their professor sent.

You must be at least 18 years old to use Crux at this time. Current use is limited to pilots arranged directly with a professor.

2. What Crux does, and what it does not

Crux conducts a spoken interview about a student's own work using an AI interviewer, records and transcribes the answers, checks stated numbers, and gives the professor an evidence map, a suggested band, and written feedback for the student.

Crux does not assign grades. The professor is solely responsible for every grade, and for deciding how, if at all, Crux's output informs it. Crux's suggested band is an aid to the professor's judgment, not a determination. Students may ask their professor to review any evaluation.

Crux is not a cheating detector and does not claim to identify who is speaking, detect other people in the room, or measure honesty. It records what was said and shows it to the professor.

3. Professors' responsibilities

• Use Crux only for courses you teach or support, and only with students who have been told how it works. The Student Notice and Consent screen in Crux does that; do not bypass it.
• Provide only material you have the right to use. Do not upload licensed cases or copyrighted readings you are not permitted to distribute to students through Crux.
• Keep your passcode private. You are responsible for activity under it.
• Follow your institution's policies on third-party tools, student data and assessment. If your institution requires a review or agreement before Crux is used with students, obtain it.
• Do not use Crux as the sole basis for a grade, and do not tell students that Crux grades them.

4. Students' responsibilities

• Answer in your own words and voice. Do not have someone else take the interview for you or feed you answers during it.
• Do not record, share or publish the interviewer's questions, your professor's case materials, or other students' interviews.
• Do not attempt to disrupt, reverse engineer, scrape, or overload the service.

5. Your content and ours

• Students own their work. By uploading written work and taking an interview, you give Crux the permission needed to store, transcribe, analyze and show that material to your professor for the course, and nothing more. We do not use it to train AI models or for any purpose outside the course.
• Professors own their materials. Cases, rubrics, answer keys and personas you create remain yours. You give Crux permission to use them to run and evaluate interviews for your course.
• Crux owns the software, its design, its interview and evaluation methods, and its documentation. You may not copy, resell or build a competing service from them.
• AI-generated questions, evaluations and feedback are provided for your use in the course; they may contain errors and must not be presented as human-authored assessments.

6. Privacy

The Privacy Notice explains what Crux collects and how it is handled. It is part of these terms.

7. Availability and changes

Crux is a prototype offered without charge. We try to keep it available and reliable, and we may change, suspend or stop it. Professors with active assignments will get at least 14 days' notice of material changes and a way to export their data.

8. Disclaimers

Crux is provided as is. We do not warrant that it is error-free, uninterrupted, or fit for a particular purpose. AI-generated questions, transcriptions, number checks, bands and feedback can be wrong, including in ways that matter, and are meant to be reviewed by a professor. Transcription accuracy varies by microphone, environment and speech; the audio clip is the record of what was said.

9. Limitation of liability

To the extent the law allows, the operator is not liable for indirect, incidental, special or consequential damages, or for loss of data or profits, arising from use of Crux. Total liability for any claim is limited to the greater of the amount you paid for Crux in the twelve months before the claim (currently zero) and one hundred US dollars. Nothing in these terms limits liability that cannot be limited by law, or the operator's obligations under the Privacy Notice in the event of a data breach caused by the operator's negligence.

10. Disputes

These terms are governed by the laws of the Commonwealth of Kentucky and the United States. Disputes will be heard in the state or federal courts located in Kentucky. There is no arbitration clause and no class-action waiver. Students did not choose this tool and keep their ordinary rights.

11. Changes to these terms

We will post the new version here with a new date and tell professors with active assignments by email at least 14 days before a significant change. Continued use after that date means you accept the new terms.

12. Contact

Jonathan Cooper, operator of Crux, jon@cruxcall.com.