The medical disclaimer and the privacy policy are incorporated into these terms by reference. Accepting these accepts all three.

1. Who you are contracting with

Peptide Corpus is a product of Stratum Applications Corporation, a corporation organised under the laws of the District of Columbia, with its registered office at 1629 K Street NW, Suite 300, Washington, DC 20006, United States ("Stratum", "we", "us", "our"). "Peptide Corpus", "the Service" and "the App" mean the websites at peptidecorpus.com and app.peptidecorpus.com and everything served from them.

Where these terms give a right, a protection or a limitation to Stratum, it extends equally to Stratum's parent, subsidiaries, affiliates, officers, directors, employees, contractors, agents and licensors.

2. Acceptance

By creating an account, starting a subscription, or otherwise using the Service, you agree to these terms, to the medical disclaimer and to the privacy policy. If you do not agree, do not create an account. The public reference material remains readable either way.

3. Eligibility

You must be 18 or over, or the age of majority where you live, whichever is greater. You must have the legal capacity to enter a binding contract, and must not be barred from using the Service under any law that applies to you. We may require evidence of age at any time and may suspend an account while that evidence is outstanding.

4. What the Service is

A reference corpus and a set of calculators, together with an optional account in which you may keep your own records: the compound library, the conditions, the glossary, the tools, the vendor and testing-laboratory directory, private records for account holders, Corbin, and a discussion forum.

5. What the Service is not

5.1 Not medical advice. We report what a record says and what it does not say. We do not tell you what to do, and no part of the Service should be read as telling you what to do. See the disclaimer.

5.2 No professional relationship. Using the Service creates no clinical, pharmaceutical, advisory or fiduciary relationship of any kind.

5.3 The calculators do arithmetic. A correct calculation performed on a wrong input produces a wrong answer, confidently.

5.4 Regulatory status varies, and it is your responsibility. Many compounds in the corpus are not approved for human use by any regulator, and their legal status differs by jurisdiction and changes over time. We do not advise you on that status and we do not verify your compliance with it.

5.5 Not an emergency service. Contact your local emergency number.

5.6 No reliance. You agree that you are not relying on any statement, record, grade, score, calculation, ranking or generated answer as a basis for any decision about your health, and that any decision you make is your own.

5.7 Assumption of risk. To the fullest extent the law allows, you assume all risk arising from any decision you make in connection with anything you read, calculate, generate or record in the Service.

6. Your account

You are responsible for the accuracy of your registration details, for the confidentiality of your credentials, and for everything done through your account. Accounts are personal to one individual and may not be shared, resold or transferred. Tell us promptly at [email protected] if you believe your account has been accessed without your authority.

7. Subscriptions, billing and renewal

7.1 Tiers. There is a free tier and there are paid tiers. The reference corpus, the conditions, the glossary, the tools, the vendor directory, bookmarks and a monthly allowance of Corbin messages are free, with no card and no expiry. Paid tiers add the ability to keep records. Current tiers and prices are shown at the point of purchase.

7.2 There is no free trial. The free tier is the trial and it does not expire. Where a discount or promotional code applies, the amount and its duration are shown before you confirm.

7.3 Automatic renewal. Paid subscriptions renew automatically at the end of each billing period and your payment method is charged the then-current price for that tier until you cancel. You authorise that recurring charge when you subscribe.

7.4 Cancelling. Cancel at any time from the billing portal in the App. Cancellation takes effect at the end of the period you have already paid for, and your access continues until that date.

7.5 Refunds. Fees are non-refundable, including for partial periods, unused allowances and periods remaining after cancellation or termination for breach, except where a refund is required by law or granted by us in writing at our sole discretion.

7.6 Price changes. We may change prices. A change to a renewing subscription takes effect at the start of your next billing period, with at least 30 days' notice by email. Continuing after that date is acceptance.

7.7 Taxes. Prices exclude taxes unless stated.

7.8 Failed payments. We may retry a failed payment and may suspend paid features. An account that has never completed a successful payment is not entitled to any paid feature.

7.9 Promotional codes. A code is a revocable licence, not a right. It is personal to the person we issued it to, non-transferable, has no cash value, may not be combined with another offer, is limited to one redemption per person and household, and may be withdrawn or expired by us at any time. A code republished, resold, shared beyond its intended recipient, harvested, guessed, or redeemed through more than one account by the same person or household is void, and we may reverse the discount, charge the standard price, cancel the subscription and terminate every account involved, without notice or refund.

7.10 Chargebacks. Disputing a charge with your card issuer without first raising it with us under section 19.1 is a breach. We may suspend or terminate your account and recover the disputed amount, our processor's fee and our reasonable costs.

7.11 One account per person. Creating additional accounts to obtain a benefit twice, extend a free allowance, redeem a code again or evade a suspension is a breach, and we may terminate every account involved without notice or refund.

8. What happens if your subscription ends

This section is a promise and we intend to be held to it.

• Reading, exporting and deleting never expire. Whatever you recorded while subscribed stays readable, exportable and deletable for as long as your account exists. We do not hold your own history hostage to a renewal.
• Editing continues for 14 days after paid access ends. After that, existing records become read-only until you renew.
• Creating new records stops immediately.
• Downgrading behaves the same way — everything already created stays readable, editable, exportable and deletable.

9. Corbin

9.1 It is a language model and it can be wrong. Generated text may be inaccurate, incomplete, outdated or fabricated, including where it appears confident and cites something. It is not reviewed by a human before you see it and it is not medical advice. Verify anything that matters against the underlying record.

9.2 Allowances are contractual limits. Each tier carries a stated monthly message allowance. A separate short-window rate limit applies to every tier; it exists to stop runaway automated use and is not a tier boundary.

9.3 No automated access. Do not access Corbin other than through the interface we provide, and do not use it to build, train, evaluate or benchmark another model, or to extract the corpus in bulk.

10. Your content, our use of it, and advertising

10.1 It is yours. You keep ownership of everything you record.

10.2 The licence you give us. You grant Stratum a worldwide, non-exclusive, royalty-free, sublicensable licence to host, store, copy, transmit, adapt and display your content to the extent necessary to operate, secure, support and improve the Service and to comply with law. For content you post publicly in the forum, that licence also includes the right to display, distribute and archive it publicly, and it survives deletion of your account to the extent the post remains part of a thread others contributed to.

10.3 What we may do with what you record. In addition to 10.2, and subject to the privacy policy, Stratum may de-identify, pseudonymise and aggregate the information you and other users record, and may use, analyse, publish, license, disclose, transfer and sell that de-identified and aggregated information to partners, advertisers, researchers and other third parties, for any purpose. Stratum may also use your information, in identified form, to operate, secure, measure, personalise and improve the Service, including to select and measure advertising shown to you. De-identified and aggregated information is not personal information: we maintain it in that state, do not attempt to re-identify it, and require by contract that recipients do not attempt to re-identify it either.

10.4 Advertising. Stratum may display advertising, sponsorship and promotional content anywhere in the Service, on the public site and inside the App, on any tier, and may sell, resell and reserve advertising space. Nothing in these terms obliges us to keep any part of the Service free of advertising. Where a paid tier is described as excluding advertising, that exclusion applies for as long as it is stated at the point of purchase.

10.5 We may change or withdraw the Service. We may modify, suspend or discontinue the Service or any part of it at any time. Where we discontinue a paid feature entirely and you are paying for it, your sole remedy is a pro-rata refund of the unused portion of the current period, at our election.

10.6 We do not promise to keep your data for you. The Service is not a backup service. We take operational backups for our own resilience and do not guarantee that any particular record can be recovered or produced on request. Export anything you would be sorry to lose.

10.7 Beta and preview features are provided as-is, may change or vanish without notice, and are excluded from any commitment in these terms.

10.8 Feedback. If you send us an idea, suggestion or bug report, you assign it to us outright, with no obligation of confidentiality, attribution or payment.

11. The forum

Posts are public and attributed to a handle you choose. Do not post another person's private information, anything unlawful, anything you do not have the right to post, or medical advice presented as professional guidance. We may edit, hide, move, lock or delete any post and suspend or ban any account, at our discretion and without notice, including where content is lawful but in our judgement harmful. We have no obligation to monitor, and moderating some content does not oblige us to moderate all of it. We are not the author of, and are not responsible for, anything a user posts.

Copyright complaints. Send a notice under the Digital Millennium Copyright Act to our designated agent — Copyright Agent, Stratum Applications Corporation, 1629 K Street NW, Suite 300, Washington, DC 20006, United States, telephone +1 (202) 643-6467, [email protected] — identifying the work, the material complained of and its location, your contact details, a statement of good-faith belief, a statement that the notice is accurate, and your signature. We remove or disable material as required and terminate the accounts of repeat infringers. To contest a removal, send a counter-notice to the same address.

12. The vendor directory, rankings and affiliate relationships

12.1 Not an endorsement. The directory and any ranking, score or cart describe published information about third-party sellers. They are not an endorsement, a recommendation to buy, a verification of any seller's identity, legality, licensing, product identity, purity or potency, or a warranty of anything a seller says or ships.

12.2 We may be paid. Some links to third-party sellers may earn Stratum a commission or fee. Where that is so it does not change a score, a rank or a record — the rubric is published and applied the same way regardless.

12.3 Your transaction is with them. Anything you buy from a third party is a contract between you and that party, on their terms.

13. Acceptable use

You will not: use the Service unlawfully; scrape, crawl or systematically extract the corpus, the rubric, the directory or the rankings; reverse engineer or attempt to derive the ranking engine or any non-public component; resell or redistribute the Service or its content as a competing product; circumvent any limit, gate, allowance or paywall; probe or test the security of the Service without our prior written consent; upload malware; impersonate anyone; or use the Service to give medical advice to others.

14. Intellectual property

The underlying scientific facts are not ours. Everything else is: the curation, the taxonomy, the evidence ladder, the rubric, the grading, the gap ledger, the scoring dimensions, the ranking engine, the software, the design system, the copy, and the compilation as a whole. You get a limited, revocable, non-exclusive, non-transferable licence to use the Service for your own personal, non-commercial purposes. You may quote and cite records with attribution and a link.

15. Suspension and termination

15.1 By you. Delete your account at any time. Deletion permanently destroys your records; export first if you want them.

15.2 By us. We may suspend or terminate your access immediately, with or without notice, where we reasonably believe you have breached these terms, where we are required to by law, where continuing would expose us or another user to liability or harm, or where an account has been used to circumvent a limit, gate or promotional code.

15.3 Effect. On termination for breach your right to use the Service ends and fees already paid are not refunded. Sections 5, 7.5, 7.9, 7.10, 10.2, 10.3, 10.6, 10.8, 12, 14, 15.3, 16, 17, 18, 19 and 20 survive.

16. Disclaimer of warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE", WITH ALL FAULTS AND WITHOUT WARRANTY OF ANY KIND. TO THE FULLEST EXTENT PERMITTED BY LAW, STRATUM DISCLAIMS ALL WARRANTIES, EXPRESS, IMPLIED AND STATUTORY, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT AND ACCURACY.

We do not warrant that the corpus is complete, current or free of error; that a grade, tier or score is correct; that a calculation is appropriate for your circumstances; that Corbin's output is accurate; that a vendor is legitimate; or that the Service will be uninterrupted, secure or error-free. The literature changes and records go stale. Where we find an error we correct it and say that we did — that is a practice, not a warranty.

17. Limitation of liability

17.1 TO THE FULLEST EXTENT PERMITTED BY LAW, STRATUM WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA, GOODWILL OR ANTICIPATED SAVINGS.

17.2 TO THE FULLEST EXTENT PERMITTED BY LAW, STRATUM'S TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS WILL NOT EXCEED THE GREATER OF (a) THE AMOUNT YOU ACTUALLY PAID STRATUM IN THE 12 MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM, AND (b) ONE HUNDRED US DOLLARS ($100).

17.3 IN PARTICULAR, STRATUM IS NOT LIABLE FOR ANY HEALTH OUTCOME, INJURY, ILLNESS OR DEATH ARISING FROM A DECISION MADE IN CONNECTION WITH THE SERVICE, FOR ANYTHING SUPPLIED BY A THIRD-PARTY VENDOR, OR FOR ANY ACT OR OMISSION OF ANOTHER USER.

17.4 Nothing here excludes liability that cannot lawfully be excluded, including for fraud or for death or personal injury caused by our negligence where the applicable law does not permit that exclusion. Some jurisdictions do not allow certain exclusions, so parts of sections 16 and 17 may not apply to you.

17.5 These limitations are a fundamental basis of the bargain and apply even if a limited remedy fails of its essential purpose.

18. Indemnification

You will defend, indemnify and hold harmless Stratum and the parties named in section 1 against any claim, loss, liability, damage, penalty, cost and expense (including reasonable legal fees) arising out of your use of the Service, your content, your breach of these terms or of any law, or any decision you or anyone else makes in connection with the Service. We may assume the exclusive defence and control of any matter subject to indemnification by you, at your expense. This does not apply to the extent a claim arises from our own fraud or wilful misconduct.

19. Dispute resolution — arbitration and class waiver

Read this section carefully. It affects how disputes are resolved and limits your rights.

19.1 Informal resolution first. Before starting a proceeding, send a written description of the dispute to [email protected] and spend 30 days trying to resolve it informally. This is a condition precedent.

19.2 Binding arbitration. Any dispute not resolved informally will be settled by final and binding individual arbitration administered by the American Arbitration Association under its Consumer Arbitration Rules, seated in Washington, DC, rather than in court. Judgment on the award may be entered in any court of competent jurisdiction.

19.3 Class action waiver. YOU AND STRATUM AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN AN INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, COLLECTIVE, CONSOLIDATED OR REPRESENTATIVE PROCEEDING.

19.4 Jury trial waiver. To the extent any dispute proceeds in court, YOU AND STRATUM EACH WAIVE ANY RIGHT TO A TRIAL BY JURY.

19.5 Exceptions. Either party may bring an individual claim in small-claims court, and either may seek injunctive relief in court to protect intellectual property or to stop unauthorised access.

19.6 Time limit. Any claim must be brought within one year after it arises, or it is permanently barred, except where a longer period is required by law.

19.7 Opt-out. You may reject sections 19.2 to 19.4 by writing to [email protected] within 30 days of first accepting these terms, quoting your account email. Opting out affects nothing else.

20. General

20.1 Governing law. These terms are governed by the laws of the District of Columbia, without regard to conflict-of-laws rules. Where arbitration does not apply, the Superior Court of the District of Columbia and the United States District Court for the District of Columbia have exclusive jurisdiction.

20.2 Changes. For material changes we will give at least 30 days' notice by email or in the App. Continuing to use the Service after the effective date is acceptance.

20.3 Severability. An unenforceable provision is modified to the minimum extent necessary, or severed if it cannot be, and the rest remains in full force.

20.4 No waiver. Failing to enforce a provision is not a waiver of it.

20.5 Assignment. You may not assign these terms. We may, including to an affiliate or in connection with a merger, acquisition or sale of assets.

20.6 Entire agreement. These terms, the disclaimer and the privacy policy are the entire agreement and supersede anything earlier.

20.7 Force majeure. We are not liable for any failure or delay caused by something beyond our reasonable control.

20.8 Notices. We may give notice by email to your account address or by posting in the App. Notices to us go to [email protected].

20.9 Electronic communications. You consent to receive all notices and disclosures electronically, and agree that this satisfies any requirement that a communication be in writing.

20.10 No third-party beneficiaries, except for the parties named in section 1.

20.11 Where the Service is available. The Service is operated from the United States and is not directed at any particular country. We may restrict or refuse access from any jurisdiction at any time. You are responsible for compliance with local law where you are.

20.12 Set-off. We may set off any amount you owe us against any amount we owe you.

20.13 Export and sanctions. You may not use the Service where barred by export control or sanctions law, and you represent that you are not on any restricted-party list.

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These three documents are one agreement, effective 19 August 2026: the medical disclaimer, the terms of service and the privacy policy. The disclaimer and the privacy policy are incorporated into the terms, so accepting one accepts all three.