These Terms of Service ("Terms") govern your access to and use of k4d websites and products operated at https://www.k4d.io and related subdomains (including moonpay.k4d.io and sui.k4d.io) (collectively, the "Service"). By using the Service, you agree to these Terms.
1. Who we are
k4d publishes documentation and research about crypto workflows (MoonX authentication and passkey wallets, PayBox agent funding, and x402 payments) and operates read-only tools such as the WAL.APP monitor and the ALPHA oracle timeline. We are not a bank, broker, exchange, or custodian of your private keys.
2. Eligibility
You must be able to form a binding contract in your jurisdiction and must not use the Service if applicable law prohibits it. You are responsible for complying with sanctions, export, tax, and crypto-asset rules that apply to you.
3. No accounts or custody
The Service does not require sign-in, does not create wallets, and does not custody assets or keys. Tools linked from the Service (for example skitty at skitty.io) are separate products with their own terms and risk profiles.
4. What the Service includes
- Docs / skills. Informational builder docs for MoonX, PayBox, and x402. Official MoonX, PayBox, and x402 documentation remain normative for those products.
- Sui tools. Read-only monitors and research surfaces (such as the WAL.APP monitor and the ALPHA oracle timeline) that display public on-chain data. We do not warrant the completeness or accuracy of on-chain data or third-party indexers.
5. Agents and PayBox
The docs describe PayBox and other agent tooling. If you use them, you authorize scoped agent actions under the grants you approve there, and you remain responsible for agent spend, approvals, and revocation.k4d does not operate or control PayBox or third-party agent runtimes (Cursor, Claude, ChatGPT, custom bots, etc.).
6. Blockchain and third parties
On-chain data shown by the Service comes from public networks and third-party services (RPC providers, indexers, explorers) outside our exclusive control. We do not guarantee its completeness, accuracy, or continuous availability. Anything you do on-chain via external products is irreversible once confirmed and entirely between you and those products.
7. Acceptable use
You agree not to:
- Violate law, including fraud, money laundering, or sanctions evasion
- Interfere with the Service, scrape abusively, or attempt unauthorized access
- Use the Service to harm minors or distribute malware
- Misrepresent affiliation with k4d, MoonX, PayBox, or MoonPay
8. Fees
The Service is currently free to use. Blockchain network fees and third-party fees are separate and charged by those networks or providers when you use their products.
9. Intellectual property
The Service (branding, UI, docs, and software we publish) is owned by k4d or its licensors. You retain rights to any content you submit, and grant us a license to host and display it as needed to operate the Service.
10. Disclaimers
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. Crypto assets are volatile and risky. Nothing on the Service is investment, legal, or tax advice.
11. Limitation of liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, k4d AND ITS OPERATORS WILL NOT BE LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, DATA, OR DIGITAL ASSETS, ARISING FROM YOUR USE OF THE SERVICE. OUR AGGREGATE LIABILITY FOR CLAIMS RELATING TO THE SERVICE WILL NOT EXCEED THE GREATER OF (A) FEES YOU PAID TO k4d FOR THE SERVICE IN THE THREE MONTHS BEFORE THE CLAIM OR (B) ONE HUNDRED U.S. DOLLARS (US$100).
12. Indemnity
You will indemnify and hold harmless k4d and its operators from claims arising out of your use of the Service, your content, or your violation of these Terms or applicable law.
13. Termination
We may suspend or terminate access if you breach these Terms or create risk to the Service or others. You may stop using the Service at any time. Provisions that by nature should survive (including disclaimers, limitations, and indemnity) will survive.
14. Changes
We may update these Terms. The effective date above will change when we do. Continued use after changes become effective constitutes acceptance. Material changes may also be surfaced in-product where practical.
15. Contact
Questions about these Terms: contact the operators of k4d via https://www.k4d.io. Related privacy practices are described in our Privacy Policy.
Last updated: September 27, 2026.