Terms of Use

1. Introduction and acceptance

These Terms of Use (the "Terms") form a binding agreement between you ("you", "your", or "Customer") and D_FFERENT ("Decisionproof", "we", "our", or "us"), operator of the Decisionproof service available at decisionproof.io.kr (the "Service").

By creating an account, signing in, purchasing a subscription, or calling the Decisionproof API, you agree to these Terms and to the policies referenced on the Pricing and Security pages. If you do not agree, do not use the Service.

2. Eligibility and intended use

The Service is designed primarily for business and organizational use by developers and technical teams integrating decision-execution workflows with AI systems. It is not marketed as a general-consumer product. If you are an individual consumer in a jurisdiction that grants non-waivable rights to consumer purchasers of digital services, those rights continue to apply to you regardless of the business-use framing of the Service — see Section 7.

• You must be at least 18 years old, or the age of majority in your jurisdiction, whichever is higher.
• You must have the legal authority to enter into these Terms. If you are acting on behalf of an organization, you represent that you have authority to bind that organization, and "you" and "Customer" will mean that organization.
• You must have a valid Google account to sign in, and a valid PayPal account or a card that is eligible for PayPal guest checkout in order to purchase access.
• You must not be prohibited from receiving the Service under applicable export controls, sanctions, or other laws that apply to you.

3. Account and sign-in

Access to the Service requires signing in with a Google account via Google OAuth. We do not store Google account passwords. Your Decisionproof workspace is created on first sign-in.

You are responsible for all activity that occurs under your account. You must keep your Google sign-in credentials and any API keys issued to your workspace secure, and notify us promptly at ghilplip934@gmail.com if you suspect unauthorized use of your account or keys.

4. Sandbox paid private beta status and changeability

The Service is offered as a Sandbox paid private beta. It is not generally available and is provided for evaluation and early production use at the Customer's own risk. We may, on reasonable notice where practicable:

• modify, add, or remove features, API endpoints, rate limits, per-run spend caps, and operational defaults;
• change Sandbox pricing or billing mechanics for future access cycles;
• discontinue the Sandbox paid private beta or transition it to a different offering.

Changes of this kind are a normal part of a beta service. They do not, by themselves, entitle you to a refund outside the refund window described in Section 7.

5. API access and API keys

Access to the Decisionproof API is authenticated with API keys (bearer tokens in the form dp_live_{secret}, issued from your workspace dashboard). During the Sandbox paid private beta, you may hold up to 3 API keys per workspace.

• API keys are long-lived bearer tokens. Treat them as passwords: do not commit them to source control, share them outside your organization, or transmit them over insecure channels.
• You are responsible for all runs, usage, and charges incurred under your API keys, including usage by employees, contractors, agents, automated systems, or anyone else who obtains access to them.
• You must rotate or revoke a key immediately if you believe it has been compromised. Decisionproof may revoke keys that show signs of abuse, compromise, or policy violation.

6. Sandbox pricing, payment, and renewal

The current price of the Sandbox paid private beta is US$29 per 30-day access cycle, subject to the limits published on the Pricing page, including:

• a 30-day Sandbox access window per payment; manual renewal only;
• a per-run spend cap (reservation.max_cost_usd) of US$5.00 — the maximum USD amount reserved for a single run, not an account-level, workspace-level, monthly, or billing-cycle budget;
• a workspace rate limit of 60 requests per minute (sliding window);
• a monthly metered-operation cap of up to 2,000 operations per 30-day access cycle, hard-capped and fail-closed — once the cap is reached, additional requests return HTTP 429 quota-exceeded until the next paid access cycle;
• a per-run execution timeout of 30 seconds;
• per-run input and output token limits of 16,000 and 4,000 tokens respectively;
• up to 3 API keys (format dp_live_{secret}) per workspace;
• no overage billing — requests that would exceed any of the Sandbox limits above are rejected fail-closed with HTTP 429 rather than accepted for additional charges. The US$29 / 30-day fee is the only amount Decisionproof charges for Sandbox access.

Sandbox payments are processed by PayPal, which may permit card payment through PayPal guest checkout for eligible buyers. Decisionproof does not receive or store card numbers or payment credentials; Sandbox invoices are available through your PayPal receipt. Prices are in US dollars and are exclusive of any taxes, duties, or fees that may be imposed by your jurisdiction, which are your responsibility.

B2B Design Partner engagements are not offered through this Sandbox pricing. Design Partner engagements are contracted separately and billed through manual invoice, bank remittance, and applicable tax-invoice workflows under the signed pilot agreement.

There is no auto-renewal. Sandbox access expires 30 days after a successful payment. To continue using the Service, you must manually renew before or after expiry. No action is required to cancel — simply do not renew.

7. Refunds and mandatory consumer rights (Sandbox)

7.1 Commercial refund policy

As a matter of commercial policy for Sandbox purchases, refund requests are reviewed on a case-by-case basis when submitted within 48 hours of the original purchase. Refund decisions take into account factors such as duplicate payment, documented inability to access the Service, and good-faith Sandbox usage. This commercial policy does not, by itself, guarantee a refund.

This Sandbox refund policy does not apply to B2B Design Partner engagements, which are governed by the signed pilot agreement, separate commercial terms, and applicable tax-invoice workflows.

Outside that 48-hour window, Decisionproof does not offer refunds as a matter of commercial policy, except to the extent required by mandatory applicable law or separately agreed in writing.

7.2 Mandatory consumer-protection rights

Nothing in Section 7.1 is intended to limit, waive, or override any non-waivable right you may have as an individual consumer under mandatory applicable law — including, where they apply to you, rights under the Republic of Korea's Act on Consumer Protection in Electronic Commerce and the Framework Act on Consumers, or equivalent consumer-protection or e-commerce law in your place of residence. If you have a non-waivable right to withdraw from a digital service purchase or to obtain a refund under such law, that right continues to apply.

Please note that providing the Service typically begins immediately upon successful payment and account activation, and applicable law may treat this as commencement of a digital service. That may affect how a cooling-off or withdrawal right operates in your jurisdiction; we will process qualifying requests in accordance with the law that governs your consumer relationship with us.

7.3 How to submit a request

To submit any refund or consumer-rights request, contact ghilplip934@gmail.com or use the contact form, including your PayPal order reference, a brief description of the issue, and, where relevant, a reference to the consumer-protection right you are invoking.

7A. Retention and data lifecycle (Sandbox)

Decisionproof applies a tiered retention model. Customer-facing retention consists of:

• Hot: online operational/audit data available for immediate export.
• Cold Archive: archived audit records retrievable after the Hot window, available only where included in the customer's plan or contract (up to 1 year).
• Deep Archive: long-term retention available only as a paid add-on or contract-specific option.

For the Sandbox paid private beta, Hot online access is 30 days by default. Sandbox data does not automatically move to Cold Archive. After the Hot window, Sandbox records and result artifacts are not guaranteed to remain online or retrievable and may be queued for deletion or purge under the applicable data handling policy, unless a separate plan, contract, legal hold, or security/audit obligation requires otherwise.

Audit evidence is designed to be append-only and tamper-evident for the records it covers. Lifecycle retention, personal-data deletion requests, legal holds, and security/audit obligations are handled separately under the applicable data handling policy and any applicable contract; the append-only design of audit evidence does not override those lifecycle controls or any mandatory legal right you hold under applicable law (see Section 7.2).

The technical mechanism by which Decisionproof honours a lawful deletion request in the presence of append-only audit records is cryptographic erasure of per-tenant data encryption keys: run inputs and result artifacts are encrypted per-tenant; on a qualifying deletion request the tenant key is scheduled for destruction via AWS KMS with a pending window, after which the corresponding cleartext is mathematically unrecoverable. Audit evidence (which does not contain raw inputs or results, only identifiers, hashes, timestamps, and settlement amounts) continues to be retained for statutory minima (e.g. commercial / tax / anti-fraud records). End-to-end completion is bounded at approximately fifty-one days from ticket acceptance. Deletion requests should be sent to ghilplip934@gmail.com with the phrase "Deletion request" in the subject line.

8. Acceptable use

You agree not to use the Service, and not to permit anyone else to use the Service, to:

• violate any applicable law, regulation, or third-party right;
• submit content you do not have the right to submit, including content that infringes intellectual property, violates privacy, or contains material you are not authorized to process;
• produce, distribute, or facilitate content that is illegal, defamatory, fraudulent, or designed to deceive or harm others;
• generate content intended to harass, threaten, or exploit minors or any other person;
• attempt to identify, re-identify, or profile individuals in ways prohibited by law;
• circumvent, disable, or interfere with spend caps, rate limits, security features, or authentication mechanisms of the Service;
• probe, scan, stress-test, or otherwise attempt to exploit vulnerabilities in the Service, except under a written agreement or a published responsible-disclosure process;
• reverse-engineer, decompile, or attempt to extract source code or model internals from the Service, except to the extent that applicable law expressly permits such activity notwithstanding this restriction;
• resell, rent, sublicense, or operate the Service as a hosted service for third parties without a separate written agreement;
• use the Service to train, fine-tune, or benchmark a competing product, model, or service.

9. Suspension and termination

We may suspend or terminate your access to the Service, in whole or in part, with or without advance notice, if:

• we reasonably believe you have violated these Terms, including Section 8 (Acceptable use);
• your payment is not received, is reversed, or is subject to a chargeback;
• we are required to do so by law or by a binding order;
• your use materially threatens the security, integrity, or availability of the Service; or
• the beta is discontinued or materially changed.

You may stop using the Service at any time by not renewing your subscription. Upon termination, your right to access the Service ends. Sections that by their nature should survive termination (including ownership, disclaimers, limitation of liability, acceptable-use violations, and governing law) will survive.

10. Intellectual property and limited license

10.1 Decisionproof IP

Decisionproof, including its software, APIs, documentation, user interface, design, and any derived materials, is owned by D_FFERENT or its licensors and is protected by applicable law. We grant you a limited, non-exclusive, non-transferable, revocable right to access and use the Service during an active paid access cycle, solely for your internal business or personal use and subject to these Terms.

10.2 Customer Content

You retain all rights in the inputs, data, and outputs associated with your runs (collectively, "Customer Content"). You grant Decisionproof a limited license to host, process, and transmit Customer Content solely to operate the Service for you, maintain required audit records, enforce these Terms, comply with law, and improve operational reliability (for example, by debugging a failure you report).

10.3 Feedback

If you voluntarily submit feedback, suggestions, or bug reports, you grant Decisionproof a perpetual, irrevocable, worldwide, royalty-free license to use that feedback to improve the Service, without obligation to you.

10.4 Open-source components

The Decisionproof repository at github.com/ghilp934/Decisionproof is published under the Apache License 2.0. That open-source licence governs use of the source code itself, but does not grant any right to the hosted Service, the trademark, or the paid private beta access described in these Terms.

11. Disclaimers

The Service is provided "as is" and "as available" during the Sandbox paid private beta, subject to any warranty that cannot be excluded under mandatory applicable law. To the maximum extent permitted by law, Decisionproof disclaims all other warranties, whether express, implied, statutory, or otherwise, including any implied warranties of merchantability, fitness for a particular purpose, non-infringement, and any warranty arising out of course of dealing or course of performance.

• No uptime SLA is offered during the Sandbox paid private beta.
• Decisionproof does not guarantee that outputs from AI-driven runs will be accurate, complete, unbiased, or fit for any particular decision. You are responsible for reviewing outputs before relying on them. Decisionproof is an execution governance / settlement integrity control layer and is not an agent framework, prompt orchestration layer, model router, or model-quality evaluator.
• Decisionproof does not claim third-party compliance certifications during the Sandbox paid private beta and does not represent that the Service is certified or audited for any regulated industry. If your use case requires a named certification, the Service may not be the right fit at this time.
• Architectural controls described on the Security page are design-level measures, not legal or regulatory guarantees.

12. Limitation of liability

Subject to Section 12.3 below, and to the maximum extent permitted by applicable law:

12.1 Excluded categories of damages

Decisionproof will not be liable for any indirect, incidental, special, consequential, or exemplary damages, or for lost profits, lost revenue, lost data, loss of goodwill, or business interruption, in each case arising out of or related to the Service, whether based on contract, tort, statute, or any other legal theory, and whether or not Decisionproof has been advised of the possibility of such damages.

12.2 Aggregate cap

Decisionproof's total aggregate liability arising out of or related to the Service and these Terms will not exceed the greater of (a) US$100 or (b) the fees you actually paid to Decisionproof in the 12 months immediately preceding the event giving rise to the claim.

12.3 Mandatory-law carve-out

Nothing in these Terms excludes or limits any liability that cannot be excluded or limited under mandatory applicable law. This includes, where applicable, liability for death or personal injury caused by negligence, fraud or fraudulent misrepresentation, and any other liability that under the law governing your relationship with us may not be limited by contract. Mandatory consumer rights described in Section 7.2 are preserved in full.

If any part of Sections 12.1 or 12.2 is held unenforceable in your jurisdiction, that part will be reduced to the minimum extent necessary so that the remainder of these Terms continues to apply.

13. Indemnification

You agree to defend, indemnify, and hold harmless D_FFERENT and its directors, officers, employees, and contractors from and against any claims, damages, losses, liabilities, and expenses (including reasonable legal fees) arising out of or related to: (a) your use of the Service in violation of these Terms; (b) Customer Content you submit; or (c) your violation of any law or third-party right.

14. Governing law and disputes

These Terms are governed by the laws of the Republic of Korea, subject to any mandatory applicable law of your place of residence or establishment that cannot be displaced by contract.

The parties agree to attempt to resolve any dispute in good faith by informal discussion first. If informal resolution fails, any dispute arising out of or relating to these Terms or the Service may be brought in the courts located in Seoul, Republic of Korea, which the parties agree is a proper and convenient venue.

Nothing in this Section prevents an individual consumer from bringing a claim in the courts of their country of residence where mandatory consumer-protection law so provides. Either party may also seek injunctive or equitable relief in any court of competent jurisdiction to protect intellectual-property rights or confidential information.

15. Changes to these Terms

We may update these Terms from time to time to reflect changes in the Service, our operations, or applicable law. Material changes will be communicated by updating the "Last updated" date at the top of this page, and, where reasonably practicable, by notice on the home page or to the email associated with your Google account. Your continued use of the Service after an update constitutes acceptance of the revised Terms.

16. Support and contact

Sandbox support is email-based and best effort during ordinary business hours, with a target first response within 1 business day. There is no 24/7 on-call, no phone support, and no uptime SLA for Sandbox. Decisionproof does not provide support for AI model output quality, prompt correctness, or third-party provider outages; support focuses on settlement, state, export, and control-plane behaviour within the published API surface.

Design Partner support is governed separately by the signed pilot agreement and support playbook, which define severity-based response targets (Sev1–Sev4). Those Design Partner severity targets do not apply to Sandbox.

Contact: ghilplip934@gmail.com or the contact form.

Operator: D_FFERENT · Service: decisionproof.io.kr · Repository: github.com/ghilp934/Decisionproof