Terms of service

These terms are a contract between you and Dewan Efaj Tahamid Rifat ("Neptuv", "we", "us"), an individual, for your use of neptuv.xyz, its API, MCP server, widgets, badges and related services (together, "the Service"). By using the Service, signing in, or paying for a plan you agree to these terms and to the policies they include: the Refund Policy, Disclaimer, Acceptable Use Policy, API Terms, Privacy Policy and Cookie Policy. If you don't agree, don't use the Service.

1. Who can use Neptuv

• You must be at least 18 and able to enter a binding contract. If you use Neptuv for a company, you confirm you may bind it, and "you" includes that company.
• You may not use Neptuv if you are, or act for, a person or entity named on a sanctions list (including those of the United Nations, the United States (OFAC), the European Union or the United Kingdom), or if you are in a country or region subject to comprehensive sanctions. Agents whose owner or wallet appears on a public sanctions list are flagged on the site.
• You are responsible for following the laws that apply to you where you use the Service.

2. What Neptuv is — and isn't

Neptuv calculates trust scores for AI agents, mainly from the public ERC-8004 registries on public blockchains, and offers tools built on them (search, profiles, verification of signed agent requests, allow/deny policies, attestations, alerts and an API). Scores, labels, reasons, reports and attestations are information and opinion produced by a published method. They are not financial, investment, legal, tax, security or professional advice, not an endorsement, and not a guarantee about any agent, its owner or its behaviour. Read the Disclaimer.

3. Neptuv never holds your funds

Neptuv is read-only and non-custodial. We do not hold, receive on your behalf, move, invest, exchange, lend or manage anyone's money or crypto assets, and we never ask for private keys or seed phrases. The only payments involved are the ones you send, from your own wallet, directly to Neptuv's public receiving address to buy a plan (or, if enabled, pay-per-call payments settled by an independent x402 facilitator). If anyone claiming to be Neptuv asks for keys, seed phrases or funds, it is a scam — report it to [email protected].

4. Your account and keys

• You sign in by signing a message with your wallet; no transaction or gas is involved. Whoever controls the wallet controls the account, so keep your wallet secure. We can't recover access to a wallet you lose.
• You are responsible for everything done with your account and your API keys, including by team members you add. Keep keys secret and revoke any key you think has leaked.
• Give accurate information and don't create accounts to get around limits, bans or the referral rules.

5. Plans, prices and payment

• Paid plans are prepaid for 1, 3 or 12 months. They do not renew automatically; nothing is ever charged without you sending a new payment.
• Prices are set in US dollars and paid in the cryptocurrencies offered at checkout. For volatile assets (such as ETH) the invoice fixes the amount for a short time; after it expires you must create a new invoice.
• You pay by sending crypto from your own wallet to the address shown on your invoice. Blockchain transfers are final and can't be reversed by anyone, including us. You are responsible for using the right network, token, address and amount. Transaction (gas) fees are yours.
• A plan starts automatically once the payment is confirmed on-chain, and access begins immediately.
• Prices may change for future purchases; time you have already paid for is honoured at the price you paid.
• You are responsible for any taxes that apply to your purchase where you are.
• All payments are final and non-refundable, as set out in the Refund Policy, which forms part of these terms.

6. Acceptable use and the API

You agree to the Acceptable Use Policy and, when you use the API, MCP server, SDKs, widgets or badges, the API Terms. We may limit, suspend or close access that breaks them.

7. Scores, disputes and reports

• Scores change as new public data arrives and as the method is improved; method changes are published on the methodology and changelog pages.
• Agent owners can dispute a score from the agent's page. We review disputes in good faith and log corrections publicly, but decisions about our method and its results are ours.
• Only report agents you actually dealt with, and only what you honestly believe happened. Reports are reviewed before they have any effect; confirmed findings are published in Neptuv's own words next to the owner's reply. We may dismiss reports and suspend accounts that file false or bad-faith reports.

8. Verification, policies and attestations

Know Your Agent verification confirms that a request was signed by a wallet that an ERC-8004 registry lists for an agent, and that the signature is fresh. It does not guarantee what the agent or its owner will do. Allow/deny answers apply the rules you choose; you remain solely responsible for your own decisions, for who you let into your service and for what happens after. Signed attestations describe a score at a moment in time and expire; anyone (including smart contracts) relying on them must check the agent, the expiry and the attester address.

9. Third-party data and services

Neptuv reads data from blockchains, RPC providers, IPFS gateways, agents' own registration files and endpoints, and works with services such as Telegram and x402 facilitators. We don't control them, and their data may be missing, delayed, wrong or manipulated. We aren't responsible for third-party agents, services, smart contracts or websites, including any linked from Neptuv.

10. Intellectual property

• The Service, its software, design, text, method write-ups, scores as compiled by Neptuv and the Neptuv name and logo belong to us or our licensors. We give you a limited, revocable, non-exclusive, non-transferable right to use the Service under these terms.
• Public blockchain data belongs to no one; our right is in how we collect, organise and score it.
• You keep ownership of what you submit (reports, replies, disputes, policy names). You give us a worldwide, royalty-free licence to store, process and display it as needed to run the Service, including publishing replies and confirmed findings as described above.
• If you send us feedback or ideas, we may use them freely without paying you.

11. Disclaimer of warranties

The Service is provided "as is" and "as available". To the fullest extent the law allows, we disclaim all warranties, express or implied, including merchantability, fitness for a particular purpose, accuracy, non-infringement and uninterrupted or error-free operation. We do not warrant that any score, label, report, verification or attestation is correct, complete or current.

12. Limitation of liability

To the fullest extent the law allows:

• We are not liable for any indirect, incidental, special, consequential, exemplary or punitive damages, or for lost profits, revenue, data, goodwill, or crypto assets, however caused.
• We are not liable for losses arising from: decisions you or anyone makes based on the Service; the actions of any AI agent, its owner or any third party; blockchain, wallet, network, RPC or smart-contract failures; payments sent to the wrong address, network or token; or unauthorised use of your wallet or keys.
• Our total liability for all claims relating to the Service is limited to the greater of (a) the amount you paid us in the 12 months before the event giving rise to the claim, or (b) US $50.

Some laws don't allow some of these limits; where that is so, they apply only as far as the law permits. Nothing in these terms limits liability that cannot be limited by law, such as for fraud.

13. Indemnity

You agree to defend, indemnify and hold harmless Neptuv and its operator from claims, losses and costs (including reasonable legal fees) arising from your use of the Service, your content, your breach of these terms, or your violation of any law or third-party right.

14. Suspension and termination

You can stop using Neptuv at any time. We may suspend or end your access, with or without notice, if you break these terms or the policies they include, if required by law, or to protect the Service or others. If we end access because you broke the rules, prepaid time is forfeited. If we close the Service entirely for other reasons, we will give at least 30 days' notice where we reasonably can. Sections that by their nature should survive (including 3, 5, 10–13 and 15–17) survive termination.

15. Changes

We may change the Service and these terms. For material changes to the terms we'll post the new version with a new date at least 14 days before it takes effect, except where a change is needed sooner for legal or security reasons. Continuing to use the Service after a change takes effect means you accept it.

16. Governing law and disputes

• These terms are governed by the laws of Bangladesh, without regard to conflict-of-law rules.
• Before starting any formal claim, contact us at [email protected] and give us 30 days to try to resolve it informally.
• Any dispute that isn't resolved informally will be decided exclusively by the courts of Bangladesh, and you and we consent to their jurisdiction. To the extent the law allows, claims may be brought only individually and not as a class or representative action.
• If you are a consumer, you also keep any rights the mandatory law of your country gives you.

17. General

• Transfer. We may transfer these terms and your account to a company formed or acquired to operate Neptuv, or to a successor, without your consent; your rights under these terms will continue against them. You may not transfer your account without our written consent.
• Force majeure. We aren't responsible for delays or failures caused by events beyond our reasonable control, including blockchain or network outages, attacks, and acts of government.
• Entire agreement. These terms and the policies they include are the whole agreement between us about the Service. If any part is unenforceable, the rest stays in force. Not enforcing a right isn't a waiver of it. The English version controls.

18. Contact

Dewan Efaj Tahamid Rifat · Bangladesh · [email protected]