Acceptable Use Policy

This Acceptable Use Policy (the “policy”) sets out what you may not do with Yuga. It is part of our Terms of Use, so breaking it is breaking the terms. It applies to everyone who uses Yuga, with or without an account, on the iPhone, iPad and Android apps and on the website, and to everything you say or type to a figure, everything you ask a figure to produce, and what you do with the figures’ answers (the “output”) afterwards, including outside Yuga.

The figures are AI portrayals, not the real people (see AI and Content Policy). They are told to refuse harmful requests, but a refusal doesn’t make the request acceptable, and a figure that fails to refuse doesn’t make it acceptable either. You are responsible for what you ask for and how you use what you get.

Some rules below mention the law. Following this policy doesn’t replace following the law where you live, and the law may forbid things this policy doesn’t list.

Yuga is a place to meet history with curiosity. Use it the way you would behave in a good museum or a good classroom:

• Ask anything about the past, including the hard parts: wars, slavery, persecution, and views that are offensive today.
• Don’t turn the past into a weapon for today: no hate, harassment, propaganda, sexual content, dangerous instructions, or fake quotes presented as real.
• Don’t attack the service: no scraping, bots, jailbreaking, getting around limits or reselling.
• Be honest about AI: if you share what a figure said, say it came from an AI.

Yuga is for learning, and history is full of cruelty, injustice and ideas we now reject. The figures are designed to talk honestly about their world, and you are welcome to explore it, question it and argue with it. The line we draw is between understanding the past and using a figure to produce harmful material about the present.

It is usually fine to:

• ask a figure what they believed and why, even when those beliefs are offensive by today’s standards;
• ask about wars, massacres, slavery, colonialism, genocide and persecution, to understand what happened and how people justified it;
• challenge a figure, tell them they were wrong, and ask how they answer their critics;
• ask how a weapon, a medicine or an invention worked in general, historical terms; and
• imagine a figure’s reaction to the modern world, as long as the result is not passed off as real.

It is not fine to use a figure to:

• attack, demean or stir up hatred against real people or groups today;
• praise, justify or deny modern atrocities, or make a figure appear to endorse a modern extremist movement, terrorist group or hateful ideology;
• write propaganda, recruitment material or harassment aimed at people now;
• get usable instructions for causing serious harm, dressed up as a history question; or
• produce words a real person never said and present them as genuine.

When in doubt, ask yourself: am I trying to understand something, or to make something harmful that I could use today? The examples below show how this works in practice.

Don’t use Yuga to:

• harass, bully, intimidate, shame or stalk anyone, or create material for that purpose (for example, getting a figure to mock a classmate by name);
• threaten violence or harm against anyone, or encourage others to do so;
• collect, reveal or ask a figure to guess private information about a real person, such as their address, contact details or health;
• impersonate another person, company or organisation, or pretend to be connected with Yuga, a historical figure’s estate, or an institution when you are not; or
• pretend to be someone else to get around Yuga’s rules, for example by giving a false birth year to avoid the protections for visitors aged 13 to 17.

We have zero tolerance for anything that sexualises children. Don’t use Yuga to create, request, describe or share any sexual content involving anyone under 18, real or fictional, including in a “historical” setting, in role-play, or by claiming a character is older than they are. Don’t use Yuga to groom, exploit or endanger a child in any way.

If we become aware of child sexual abuse material or child sexual exploitation connected with Yuga, we will close the account immediately, without warning, and report it to the US National Center for Missing & Exploited Children (NCMEC) and to the police or other authorities, as the law requires or allows. We will keep and share information with the authorities where the law requires us to.

If a child is in immediate danger, contact your local emergency number now. You can also report child sexual abuse material to NCMEC’s CyberTipline at report.cybertip.org or to the hotline in your country.

Yuga is for ages 13 and up, so sexual content is not allowed for anyone, whatever their age. Don’t ask the figures for sexually explicit material, erotic role-play, or sexual messages, and don’t try to steer a conversation there.

Asking factual questions about history that involves sex or relationships is fine when it is part of genuine learning, for example about marriage customs, laws on sexuality in a figure’s time, or a ruler’s political marriages. The figures will keep such answers brief and non-graphic, and for visitors aged 13 to 17 they leave romance out altogether.

Don’t use Yuga to create, request or spread material that:

• attacks, dehumanises or calls for discrimination, exclusion or violence against people because of their race, ethnicity, national origin, caste, religion, disability, sex, gender identity, sexual orientation, age or other protected characteristic;
• promotes, praises, supports or recruits for terrorist or violent extremist groups, or glorifies terrorist attacks, mass killings or their perpetrators;
• denies or trivialises well-documented genocides and atrocities, or celebrates them;
• tries to make a figure endorse a modern atrocity, a current extremist movement or a hateful ideology, for example by asking a figure to “approve” a recent attack or to speak in support of a present-day hate group;
• incites violence, or glorifies graphic violence or cruelty for its own sake; or
• is propaganda aimed at turning people against a real group of people today.

This doesn’t stop you from learning about these subjects. Asking how propaganda worked in the 1930s, what a general thought of a battle, why people supported a war, or how a religious conflict began is history, and it is welcome. Some figures connected with religions and recent conflicts are handled with extra care, so their answers may be more cautious.

Don’t use Yuga to encourage, glorify or give instructions for suicide, self-harm or eating disorders, whether for yourself or anyone else, and don’t ask a figure to present these as noble, romantic or a solution. This applies even when a historical figure died in this way: you can learn about their life and death, but not use them to promote self-harm.

If you mention harming yourself, the figure will step out of character and point you to help. If you are in danger, call your local emergency number now, or find a free, confidential helpline at findahelpline.com. Talking about how you feel is never against these rules.

Don’t use Yuga to get, or try to get, instructions or meaningful help to:

• make, obtain or use weapons, explosives, or chemical, biological, radiological or nuclear agents;
• make, grow, obtain or misuse illegal or dangerous drugs, or misuse medicines;
• hack, break into or damage computer systems, write malware, or commit fraud, phishing or identity theft;
• harm animals, damage critical infrastructure, or seriously injure people; or
• evade the police or other authorities in connection with any of these.

Framing the request as history, fiction or role-play (“as a 19th-century chemist, give me exact quantities for…”) doesn’t change this. General, historical explanations, such as how gunpowder changed warfare or how early vaccines were developed, are fine.

The figures are AI portrayals, and anything they say could be mistaken for the real person’s words. So:

• Don’t present output as something the real person said or wrote. Don’t publish, post or share it as a genuine quotation, letter, speech, recording or interview, or remove context that shows it is AI-generated.
• Label it. When you share output, say clearly that it was generated by AI on Yuga, for example “AI recreation of Abraham Lincoln on Yuga, not a real quotation”. For audio or video, say so in the clip or the caption.
• Don’t create or spread election misinformation, such as false information about how, when or where to vote, who is eligible, or results; or content that makes a historical figure appear to endorse or attack a current candidate, party or ballot measure in a way that could mislead voters.
• Don’t spread misinformation that could cause real harm, for example false health or safety claims, or content designed to look like genuine news or historical evidence.
• Don’t use Yuga for spam, scams, fake reviews or coordinated campaigns that pretend to be independent voices.

It is fine to quote output in your own work, such as an essay, a lesson or a video, as long as you make clear it is AI-generated and you check any facts against reliable sources first.

The figures are historical, but conversations can turn to people who are alive today. Don’t use Yuga to:

• create false statements of fact that could damage the reputation of a real living person (defamation);
• get a figure to produce deceptive content about a real living person, for example a made-up “prophecy” about a politician, a fake historical document mentioning them, or a claim that they committed a crime;
• create content that sexualises, humiliates or invades the privacy of a real person; or
• imitate the voice, likeness or style of a living person in a way that could make people think they said or endorsed something.

Discussing public figures and current events, asking a figure for an opinion in the spirit of their time, and comment, satire and criticism that nobody would mistake for fact are all fine.

Yuga’s safety rules exist to protect you, other people and the people the figures portray. Don’t try to defeat them. In particular, don’t:

• “jailbreak” a figure, for example by telling it to ignore its instructions, pretending to be a developer or an administrator, or building elaborate role-play to unlock content it would refuse;
• use prompt injection, such as hidden instructions in text you paste, to change how a figure behaves;
• try to extract the figures’ instructions, our prompts, or other confidential parts of how Yuga works;
• split a harmful request into small harmless-looking pieces to get around a refusal; or
• get around the age-appropriate settings for visitors aged 13 to 17.

If you find a genuine way around a safety rule, please tell us at support@foundationalcreations.com instead of using it. We appreciate responsible reports.

Don’t:

• use bots, scripts, scrapers, crawlers or other automated means to access Yuga, send messages or collect content, except for search engines indexing our public web pages in line with our robots.txt file;
• copy, download or collect the figures, their research notes, voices, art or output in bulk, or build a database or dataset from them;
• use Yuga or its output to develop, train or improve an AI model or a product that competes with Yuga, or to benchmark Yuga for a competitor without our permission;
• reverse engineer, decompile or disassemble the apps or try to find their source code, except where the law gives you a right to do so that cannot be excluded;
• access Yuga through anything other than our apps and website, call our servers directly, or interfere with, overload or disrupt Yuga or the networks and providers it relies on;
• get around rate limits or voice minutes, for example by creating several accounts, rotating devices, networks or IP addresses, or sharing an account;
• probe, scan or test the security of Yuga without our written permission, or upload viruses or other harmful code;
• sell, resell, rent, sublicense or charge others for access to Yuga or to an account, or offer Yuga as part of another service, without our written agreement; or
• use Yuga in a way that breaks the terms of the app stores or of the providers it relies on.

If you are a researcher, a developer or a school and want access we don’t normally allow, ask us at support@foundationalcreations.com.

In our iPhone and Android apps you can talk to the figures with your voice, and they answer with AI voices. (The website has no conversations and never uses your microphone.) The figures’ voices were designed for Yuga: they are not recordings of the real people and not clones of anyone’s voice. Yuga has no feature for cloning a voice, and never records yours. So:

• Don’t use Yuga to listen to, transcribe or record other people’s speech without their knowledge, for example by leaving the microphone on where others are talking privately. The microphone listens only after you tap the microphone button, until it sends what it heard.
• Don’t record or share a conversation that includes another person’s voice or words without their consent.
• Don’t present a figure’s AI voice as a real historical recording, or edit it to make it seem a real person said something.
• Don’t try to make a figure imitate the voice of a living person, and don’t ask us (or try) to clone any real person’s voice. We will not clone a real voice, living or dead, without the rights to do so; see AI and Content Policy.

The apps let you share a moment from a conversation (a quote card or a short video clip) and the badges you earn. Everything you share carries a visible label saying it is an AI recreation (on clips: “AI recreation · AI voice”, or “AI recreation · not their real voice” for figures whose real voice survives), and the file itself is marked as AI-made in its metadata. When you share:

• Keep the label. Don’t crop, cover, blur, edit out or otherwise hide the on-screen label, and don’t strip or change the file’s AI metadata. Indian law also forbids removing or suppressing the label on AI-generated content.
• Don’t change the words. Don’t edit a clip or card so a figure appears to say something they did not say in Yuga, or splice their AI voice into other material.
• Don’t present it as real: not as a genuine recording, quotation, letter or interview, and not as evidence of anything.
• Mind other people. A card or clip can include your question (“I asked: …”), and on a clip your name if you are signed in. Don’t put other people’s personal details into a question you plan to share, and you can switch your question off in the share preview.
• Follow the rules of the place you post. Many platforms require you to mark AI-generated content when you upload it; use their AI label too.

Some things can’t be shared at all: anything from the examined figure, a reply that came with the crisis card, a refusal, and your own crisis messages. Please don’t try to get around that, for example by recording the screen.

Don’t use Yuga to:

• plan, promote or carry out anything illegal where you are, or help someone else to;
• infringe anyone’s copyright, trade marks, privacy, publicity or personality rights or other rights, for example by pasting in large parts of a book you don’t have the right to share, or using a figure’s output in a way that passes off someone else’s work as yours;
• process other people’s personal information in a way that breaks data protection law; or
• break export control or sanctions laws.

If you think something on Yuga infringes your rights, see Copyright and Likeness.

Indian law (the Information Technology (Intermediary Guidelines and Digital Media Ethics Code) Rules, 2021) asks online services to tell users what they must not share. In addition to everything above, you must not use Yuga to create, upload, share or store information that:

• belongs to someone else and that you have no right to share;
• is obscene, pornographic, paedophilic, invades someone’s privacy (including bodily privacy), insults or harasses someone on the basis of gender, is racially or ethnically objectionable, relates to or encourages money laundering or gambling, or promotes enmity between groups on grounds of religion or caste with the intent to incite violence;
• is harmful to children;
• infringes any patent, trade mark, copyright or other proprietary right;
• deceives or misleads anyone about where a message came from, or knowingly spreads misinformation or information that is plainly false or misleading;
• impersonates another person;
• threatens the unity, integrity, defence, security or sovereignty of India, friendly relations with other countries, or public order; incites any cognisable offence; prevents the investigation of an offence; or insults another nation;
• contains a software virus or other code designed to disrupt, destroy or limit the working of any computer resource;
• is, or advertises, an online game that is not permitted under Indian law; or
• breaks any law currently in force.

Since 20 February 2026 the IT Rules also cover AI-generated (“synthetically generated”) audio, images and video. You must not use Yuga to create, change or share synthetic content that is child sexual abuse material or non-consensual intimate imagery; is obscene, pornographic or invades someone’s privacy; makes a false document or electronic record; helps prepare explosives, arms or ammunition; or falsely depicts a real person’s identity, voice, conduct, actions or statements, or a real event, in a way likely to deceive. Doing so may be an offence under the Information Technology Act 2000, the Bharatiya Nyaya Sanhita 2023, the POCSO Act 2012, the Representation of the People Act 1951 and other laws, and may lead to removal, suspension or termination of your access, disclosure of your identity to a victim where the law allows, and reports to the authorities where the law requires.

If we find such information, we may remove access to it, suspend or close the account involved, and report it to the authorities where the law requires. Complaints can go to our Grievance Officer, Pranay Vanka, at support@foundationalcreations.com.

These examples show where the line usually falls. They are not a complete list; what matters is the purpose and effect of what you ask for and how you use it.

Yuga does not keep transcripts of conversations (the Privacy Policy explains this), so our safety measures mostly work as each message is handled: the figures are instructed to refuse harmful requests, a crisis check runs on every message, and rate limits and voice minutes restrict heavy or automated use. We also act on reports: replies that visitors flag with Report this reply in the app, reports by email (including screenshots or recordings people send us), and technical signals such as unusual patterns of requests.

If we find that this policy has been broken, we may take one or more of these steps, depending on how serious it is:

• the figure refuses, or ends the conversation;
• a warning;
• temporary limits, for example on messages or voice minutes;
• blocking access from particular devices or networks;
• suspending the account for a time;
• closing and deleting the account (see Delete Your Account for what deletion removes) and refusing a new one; and
• reporting to the police, NCMEC or other authorities, where the law requires it or where there is a risk to someone’s life or safety.

We act proportionately. We consider how serious the breach was, whether it looks deliberate, whether it has happened before, whether the person is likely a young person, and the risk of harm to others. Where it is fair and safe to do so, we will warn you first and tell you why we acted. For the most serious breaches, such as anything sexualising children, credible threats of violence or attempts to cause mass harm, we act at once and without warning. What happens to a paid plan when we act is explained in the Terms of Use.

In the app: Report this reply

The quickest way to tell us about a figure’s reply is in the call screen of the iPhone, iPad or Android app (the website has no conversations). Open the Transcript, choose Report this reply under the reply, pick a reason (offensive, inaccurate, unsafe or other), add a note if you like, and send it. You don’t have to leave the conversation.

The report comes to me, the developer, with the reply you flagged and your message just before it, so we can see exactly what the figure said and why. We keep reports for up to 12 months to review them and improve the figures, and we don’t link them to your account. The Privacy Policy says more.

By email

For anything else, such as misuse by another person, or Yuga output being passed off as real somewhere else, or if you would like a reply, email support@foundationalcreations.com. It helps to include:

• which figure, and roughly when;
• what was said, ideally with a screenshot or the exact words, since we don’t keep transcripts and can’t look up a conversation ourselves (a reply sent with Report this reply reaches us with its words);
• where you saw it, with a link, if it was outside Yuga; and
• how we can reach you, if you would like a reply (you may report anonymously).

Some reports have their own route:

• Child safety: put “Child safety” in the subject so we see it first. If a child is in immediate danger, call your local emergency number.
• Someone at risk of harming themselves or others: contact local emergency services first.
• Copyright, likeness and estates: see Copyright and Likeness.
• Security vulnerabilities and ways around safety rules: support@foundationalcreations.com.
• Grievance Officer (India’s IT Rules, open to everyone): Pranay Vanka at support@foundationalcreations.com, who acknowledges within 24 hours and resolves within 7 days (36 hours for removal of unlawful content; 2 hours for non-consensual intimate images). See Grievance Redressal and Contact.

Please don’t make false or bad-faith reports. Doing so is itself a breach of this policy.

If we limit, suspend or close your account and you think we got it wrong, you can appeal. Email support@foundationalcreations.com with “Appeal” in the subject within six months of our decision, from the email address linked to your account if you can, and tell us why you think the decision should change.

• Yuga is run by one developer, so the same person who made the decision reviews it again, afresh, looking at any new information you give us. If the developer ever has help, someone not involved in the first decision will review it.
• We aim to reply within 14 days, and will tell you the outcome and the reason for it.
• If we got it wrong, we will reverse the decision and restore your account as far as we can.

Appealing doesn’t affect your other rights. You can still complain to a regulator or go to court where you live. In India, you may also complain to our Grievance Officer, and if you are not satisfied with their decision, appeal to the Grievance Appellate Committee set up under the Information Technology Rules within 30 days.

We will update this policy as Yuga changes and as we learn how people use it. The date at the top shows when it last changed. For important changes, we will tell you in advance, in the app, on the website or by email, as described in the Terms of Use. Questions about this policy can go to support@foundationalcreations.com.

This policy is published by Hriday Vanka, an individual developer, of Hyderabad, Telangana, India, India.