Terms of Service

Last updated: 23 September 2026

These terms govern your use of the AgentProof API and related services (the "Service"), operated by Shanghai Xusheng Dongjun E-Commerce Co., Ltd. (the "Company", "we"). By creating an account or calling the API you agree to them.

1. What the Service is

The Service is a software API. You submit a description of an action taken by a software agent; we return a receipt consisting of an identifier, a cryptographic hash, a timestamp and a verification URL. You may then present or verify that receipt.

The Service is a technical record-keeping tool. It is not a law firm, a notary, an escrow agent, a payment service, or an arbitrator.

2. Accounts and API keys

You must provide accurate account information and keep your API keys confidential. Activity under your keys is your responsibility.
You must be at least 16 years old and, if acting for an organisation, authorised to bind it.
We may suspend an account that we reasonably believe is being used for abuse, unlawful activity, or in breach of these terms.

3. Acceptable use

You agree not to use the Service to:

Submit content you do not have the right to submit, or that infringes another party's rights.
Submit special-category data as defined by applicable data protection law — including health data, biometric identifiers, precise geolocation, government identifiers and financial account numbers in raw form. The Service is not designed for such data and must not be used for it.
Misrepresent a receipt, or present a receipt as proving something it does not prove.
Attempt to deanonymise, reverse, or correlate other users' hashes, or to attack the integrity of the Service.
Break any applicable law, including export control, sanctions and data-transfer rules.

4. What a receipt does and does not prove — please read

A receipt proves one thing only: that a particular set of values existed at a particular time, and that those values have not been altered since.

It does not prove that the values are true, that the action described actually occurred, that a counterparty agreed to anything, or that a receipt is admissible in any court. Admissibility depends on the law and procedure of the relevant jurisdiction, and we make no representation about it. You are responsible for how you use and characterise a receipt.

5. Payment and subscriptions

Paddle is our merchant of record. Purchases and subscriptions are processed by Paddle.com Market Ltd, which acts as the reseller of the Service. Paddle handles payment, invoicing, applicable taxes, refunds and chargebacks. Paddle's terms apply to your purchase in addition to these terms, and Paddle's name may appear on your statement.

Fees are stated on our pricing page and are exclusive of any taxes Paddle is required to collect.
Subscriptions renew automatically until cancelled. You may cancel at any time; access continues to the end of the paid period.
We may change prices with at least 30 days' notice before your next renewal.

6. Availability and changes to the Service

We aim to keep the Service available but do not guarantee uninterrupted operation. We may modify, deprecate or discontinue features. If we discontinue the Service entirely we will give reasonable notice and provide an export of your receipt identifiers.

7. Intellectual property

We retain all rights in the Service, its software and its documentation. You retain all rights in the content you submit and in the underlying records you hold. You grant us only the limited licence needed to operate the Service for you. Receipts, identifiers and verification URLs may be displayed to third parties you choose to share them with.

8. Disclaimer of warranties

The Service is provided "as is" and "as available", without warranties of any kind, express or implied, including any implied warranty of merchantability, fitness for a particular purpose, or non-infringement. We do not warrant that hashes will be accepted as evidence by any court, regulator, insurer or counterparty.

9. Limitation of liability

To the maximum extent permitted by law, we are not liable for indirect, incidental, special, consequential or punitive damages, or for lost profits, lost data, or business interruption, arising out of or relating to the Service. Our total aggregate liability is limited to the amount you paid us in the twelve months preceding the claim.

10. Indemnity

You agree to indemnify us against claims arising from content you submit, your use of a receipt in a dispute, or your breach of these terms.

11. Suspension and termination

You may close your account at any time. We may suspend or terminate access for material breach, unlawful use, or non-payment. On termination your right to use the Service ends; sections 4, 7, 8, 9, 10 and 12 survive.

12. Governing law and disputes

These terms are governed by the laws of the People's Republic of China, without regard to conflict-of-law rules. Disputes shall be submitted to the Shanghai International Arbitration Center. Nothing in this clause deprives you of any mandatory consumer protection rights available in your country of residence.

13. Changes to these terms

We may update these terms. Material changes will be notified by email to account holders or through the Service at least 14 days before they take effect. Continued use after that date constitutes acceptance.

14. Contact

AgentProof — hello@proofofaction.dev