Terms of Service

Last updated August 30, 2026.

1. Introduction and acceptance

These Terms of Service (the “Terms”) are a binding agreement between you and DeepInquiry and govern your access to and use of the DeepInquiry website at deepinquiry.ai, the DeepInquiry API at api.deepinquiry.ai, the embeddable widget, and any related documentation, tools, or content we make available (together, the “Service”).

By creating an account, generating an API key, embedding the widget, or otherwise using the Service, you accept these Terms. If you do not accept them, do not use the Service. If you are using the Service on behalf of an organization, you represent that you have authority to bind that organization, and “you” refers to that organization.

2. Definitions

  • “Account” means the record we create for you when you sign up, including any API keys issued under it.
  • “API Key” means a credential we issue that authenticates requests to the Service.
  • “Content” means the facts, confidence scores, source citations, methodology text, and other output made available through the Service.
  • “Documentation” means the API reference, methodology page, and other technical materials we publish at deepinquiry.ai.
  • “Fees” means the subscription and usage-based amounts payable for your Plan.
  • “Plan” means the subscription tier you select from our pricing page (Free, Starter, Pro, Scale, or Enterprise).

3. Eligibility and Accounts

3.1 Age

You must be at least 13 years old to use the Service (or 16 in the European Union and United Kingdom). If you are under the age of majority where you live, a parent or legal guardian must accept these Terms on your behalf.

3.2 Account information

You must provide accurate registration information and keep it current. You are responsible for all activity under your Account, including any activity performed with an API Key issued to that Account.

3.3 Credential security

API Keys are secrets. Do not embed them in client-side code, in public repositories, or in any other location where they can be read by third parties. If a key is exposed, rotate it immediately from the dashboard. You are responsible for all usage charges incurred under your Account, including usage resulting from a leaked key.

4. License to use the Service

4.1 Grant

Subject to your compliance with these Terms and payment of any applicable Fees, we grant you a limited, non-exclusive, non-transferable, non-sublicensable, revocable license, during the term of your Plan, to (a) access the Service through the Documentation-described endpoints, (b) use and display Content returned to you in your own products and services, and (c) embed the widget on your properties.

4.2 Attribution and citations

You may present DeepInquiry Content alongside your own material. You must not remove, alter, or obscure the citations that we attach to each fact, and you must not misrepresent the source or verification status of any fact.

4.3 Restrictions

You will not, and will not permit any third party to:

  • Use the Service or the Content to build, train, fine-tune, or evaluate a competing fact-verification database, model, or API.
  • Bulk-export, harvest, or otherwise systematically retrieve the Content in a manner that circumvents the documented endpoints or rate limits, or that has the effect of creating a standalone copy of our corpus.
  • Reverse engineer, decompile, or attempt to derive the source code, models, or ranking signals of the Service, except to the extent this restriction is prohibited by applicable law.
  • Interfere with, disrupt, or attempt to circumvent authentication, quotas, rate limits, or other technical controls of the Service.
  • Probe, scan, or test the vulnerability of the Service, or breach or circumvent any security or authentication measure.
  • Use the Service to send unsolicited communications, run denial-of-service traffic, or otherwise interfere with any other user’s access.
  • Use the Service in a manner that violates any law, regulation, or third-party right, including privacy, intellectual property, and export-control laws.
  • Use the Service to make life-safety, medical, legal, financial, employment, insurance, credit, housing, or similar high-stakes decisions as the sole source of truth. The Service is a research and content tool, not a professional advisor. See Section 11.

5. API-specific terms

5.1 Rate limits and quotas

Each Plan has a monthly request quota and a per-minute rate limit published on the pricing page and enforced by the Service. We may throttle, degrade, or reject requests that exceed those limits.

5.2 Quality tier

Each Plan grants access to a minimum verification tier (“quality floor”) as described on the pricing and methodology pages. You may pass a stricter tier at request time, but not a looser one; the Service will clamp requests to your Plan’s permitted floor.

5.3 Automated traffic

The Service is designed for automated use through the documented API endpoints under a valid API Key. Automated collection or extraction of Content from the public website (outside the API) without our written permission is prohibited.

5.4 Beta features

Endpoints, parameters, or features labeled “beta”, “preview”, “experimental”, or similar are provided as-is with no availability commitment and may be modified or removed at any time without notice.

6. Fees, billing, and cancellation

6.1 Fees

The Free Plan is provided at no charge. Paid Plans are billed monthly in advance, in U.S. dollars, at the price posted on our pricing page when you subscribed. All Fees are exclusive of taxes; you are responsible for any sales, use, VAT, GST, or similar taxes we are required to collect.

6.2 Payment processor

Payments are processed by Stripe. By providing a payment method, you authorize us and Stripe to charge that method for all Fees due, including on automatic renewal.

6.3 Automatic renewal

Subscriptions renew automatically at the end of each billing period at then-current rates unless you cancel before renewal. You can cancel at any time from your dashboard. On cancellation, your paid Plan remains active through the end of the current billing period and then reverts to the Free Plan.

6.4 No refunds

Except where required by law, Fees are non-refundable and we do not prorate partial-period usage. If you believe you have a billing issue, email api@deepinquiry.ai and we will review it in good faith.

6.5 Failed payment

If a payment fails, we will notify you by email and may downgrade your Account to the Free Plan or suspend it until billing is restored.

6.6 Price changes

We may change our prices. For active paid subscribers, price changes take effect no earlier than 30 days after we email you notice. You may cancel before the new price takes effect.

7. Intellectual property

7.1 DeepInquiry IP

The Service, the Content, the Documentation, and all associated intellectual property rights are owned by us. Except for the license in Section 4.1, no rights are granted to you by implication, estoppel, or otherwise.

7.2 Your material

You retain all rights in material you send to the Service that you own before you send it. You grant us a worldwide, royalty-free license to use, host, cache, and transmit that material solely as needed to operate the Service for you.

7.3 Feedback

If you send us suggestions, ideas, bug reports, or other feedback about the Service (“Feedback”), you grant us a perpetual, irrevocable, worldwide, royalty-free license to use the Feedback for any purpose without obligation or attribution to you. Do not send us anything under Feedback that you consider confidential.

7.4 Trademarks

“DeepInquiry” and our logo are our trademarks. You may reference “verified by DeepInquiry” in your product in a truthful, non-endorsing way. You may not use our marks in a way that suggests sponsorship, partnership, or endorsement without our written permission.

8. Third-party service providers

To operate the Service we use third-party service providers for hosting, payments, email delivery, error monitoring, DNS, and related infrastructure. By using the Service you accept that data required to operate your Account (as further described in our Privacy Policy) may be shared with those providers for those purposes. The current, dated list is maintained at /subprocessors.

9. Corrections and takedown of individual facts

We take the accuracy of the Content seriously. If you believe a specific fact returned by the Service is inaccurate, out of date, or unfairly presented, email api@deepinquiry.ai with the fact’s ID and a short description of the issue. We will review the fact against our methodology and either correct it, retire it, adjust its confidence tier, or explain to you why we are leaving it in place.

Nothing in this section obligates us to remove a fact that is well-supported by the sources cited alongside it. This section does not modify your rights under Section 15 (DMCA) or under data-protection law (see the Privacy Policy).

10. Availability and Service changes

10.1 Service level

We operate the Service with reasonable care but do not commit to a formal service level under Free, Starter, Pro, or Scale Plans. If you require contractual uptime, response time, or data-residency commitments, contact us about an Enterprise agreement.

10.2 Changes to the Service

We may modify, add, or remove features of the Service. For material reductions in functionality on paid Plans, we will provide reasonable advance notice by email or in-product, unless the change is required for security, legal compliance, or to address a threat to the Service. The Content itself changes continuously by design; that is the product.

10.3 Discontinuation

If we decide to discontinue the Service or a material portion of it, we will provide at least 30 days’ advance notice to active paid subscribers and, where practical, a reasonable way to export your Account data.

11. Disclaimers

THE SERVICE AND THE CONTENT ARE PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT.

WE DO NOT WARRANT THAT (A) ANY FACT IN THE CONTENT IS COMPLETE, CURRENT, OR FREE FROM ERROR, (B) THE SERVICE WILL BE UNINTERRUPTED, TIMELY, SECURE, OR ERROR-FREE, OR (C) THE RESULTS OBTAINED FROM USING THE SERVICE WILL BE ACCURATE OR RELIABLE. EVERY FACT IS GRADED ON OUR BEST AVAILABLE EVIDENCE AT THE TIME OF PUBLICATION AND MAY BE CORRECTED, RETIRED, OR RE-TIERED AS EVIDENCE CHANGES.

DO NOT USE THE SERVICE AS THE SOLE BASIS FOR MEDICAL, LEGAL, FINANCIAL, INSURANCE, EMPLOYMENT, HOUSING, SAFETY, OR OTHER HIGH-STAKES DECISIONS. The Service is a research and content tool. Apply human judgment before publishing anything user-facing based on the Content.

12. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, DEEPINQUIRY AND ITS AFFILIATES, OWNERS, OFFICERS, EMPLOYEES, AGENTS, AND SUBPROCESSORS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES; LOST PROFITS OR REVENUES; BUSINESS INTERRUPTION; LOSS OF DATA, GOODWILL, OR REPUTATION; OR THE COST OF SUBSTITUTE SERVICES, ARISING OUT OF OR RELATING TO THE SERVICE OR THESE TERMS, EVEN IF ADVISED OF THE POSSIBILITY.

OUR TOTAL AGGREGATE LIABILITY FOR ANY CLAIM ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE IS CAPPED AT THE GREATER OF (A) THE AMOUNT YOU PAID US IN THE TWELVE MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR (B) ONE HUNDRED U.S. DOLLARS (US$100). THESE LIMITATIONS APPLY REGARDLESS OF THE LEGAL THEORY (CONTRACT, TORT, STATUTE, OR OTHERWISE) AND ARE A MATERIAL BASIS OF THE BARGAIN BETWEEN THE PARTIES.

13. Indemnification

You will defend, indemnify, and hold harmless DeepInquiry and its affiliates, owners, officers, employees, and agents from and against any third-party claim, demand, loss, liability, damage, or expense (including reasonable attorneys’ fees) arising out of or relating to (a) your use of the Service; (b) your violation of these Terms or applicable law; (c) content you publish that combines DeepInquiry Content with your own additions, edits, or context; or (d) your infringement of any third-party right, including intellectual property or privacy rights. We will notify you of any such claim, allow you to control the defense (with counsel reasonably acceptable to us), and reasonably cooperate at your expense. You may not settle any claim in a manner that imposes obligations on us without our prior written consent.

14. Term, suspension, and termination

14.1 Term

These Terms begin when you first use the Service and continue until terminated as described here.

14.2 Termination by you

You may stop using the Service at any time and cancel your subscription from the dashboard.

14.3 Suspension or termination by us

We may suspend or terminate your access, in whole or in part, if (a) you materially breach these Terms and do not cure the breach within 14 days after we email you notice, (b) the breach cannot reasonably be cured (for example, an attack on the Service, publication of unlawful content, or violation of Section 4.3), (c) we are required to do so by law, or (d) you have not paid Fees due after reasonable notice. We may also terminate Free-Plan Accounts that have been inactive for more than twelve consecutive months, with at least 30 days’ notice.

14.4 Effect of termination

On termination, your license under Section 4.1 ends and we may disable your API Keys. Sections 4.3, 7, 9 (with respect to previously requested corrections), 11, 12, 13, 15, 16, and 17 survive.

15. Copyright infringement (DMCA)

We respect the intellectual property rights of others and comply with the Digital Millennium Copyright Act (17 U.S.C. § 512). Full notice and counter-notice procedures, our designated agent contact, and our repeat-infringer policy are set out on our DMCA Policy page. Send notices and counter-notices to legal@deepinquiry.ai.

16. Export controls and sanctions

You represent that you are not located in a country subject to a U.S. government embargo, or that has been designated by the U.S. government as a “terrorist-supporting” country, and that you are not listed on any U.S. government list of prohibited or restricted parties. You will comply with all applicable U.S. export-control and sanctions laws in your use of the Service.

17. Governing law, venue, and disputes

17.1 Governing law

These Terms are governed by the laws of the State of Delaware, without regard to its conflict-of-laws principles. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

17.2 Venue

Any action or proceeding arising out of or relating to these Terms or the Service will be brought exclusively in the state or federal courts located in Miami-Dade County, Florida, and each party consents to personal jurisdiction and venue there.

17.3 Jury and class waiver

Each party waives any right to a jury trial. Claims must be brought individually and not as a plaintiff or class member in any purported class, collective, or representative action.

17.4 Time limit

Any claim arising out of or relating to these Terms or the Service must be filed within one year after the cause of action accrues, or be forever barred, except where a longer period is required by applicable law.

18. General

18.1 Changes to these Terms

We may update these Terms. Non-material updates (typographical fixes, clarifications, new subprocessors that do not receive new categories of personal data) take effect on publication. Material updates take effect no earlier than 14 days after we email registered users and post the revised Terms here. Continued use of the Service after the effective date is your acceptance of the update.

18.2 Notices

Notices to you will be sent to the email on your Account or posted in-product. Notices to us must be sent to api@deepinquiry.ai and are effective on our confirmation of receipt.

18.3 Publicity

For paid Plans, you agree that we may identify you as a customer and display your name and logo on our website and in marketing materials in a factual, non-endorsing way. Email us at any time to opt out.

18.4 Assignment

You may not assign or transfer these Terms or your Account without our prior written consent. We may assign these Terms without restriction in connection with a merger, acquisition, reorganization, or sale of assets. Any purported assignment in violation of this section is void.

18.5 Force majeure

Neither party will be liable for any failure or delay in performance to the extent caused by events beyond its reasonable control, including acts of God, natural disasters, war, terrorism, civil unrest, government action, labor disruption, internet or utility failures, or third-party service outages.

18.6 U.S. government end users

The Service is a “commercial item,” “commercial computer software,” and “commercial computer software documentation” as those terms are used in FAR 12.212 and DFARS 227.7202. U.S. government end users acquire the Service with only those rights set forth in these Terms.

18.7 Severability, waiver, entire agreement

If any provision of these Terms is held unenforceable, the rest remain in effect. Our failure to enforce a right on one occasion is not a waiver of the right on another. These Terms, together with the Privacy Policy and any order form we sign with you, are the entire agreement between us on this subject and supersede any prior agreements.

18.8 Relationship of the parties

The parties are independent contractors. Nothing in these Terms creates a partnership, joint venture, agency, or employment relationship.

Contact

Questions about these Terms: api@deepinquiry.ai.

DeepInquiry is operated by Epic Sky, LLC, a Delaware limited liability company.