Terms of use

1. Acceptance

By creating an account or using the Service, you agree to these Terms. If you do not agree, do not use the Service. You must be a licensed attorney in good standing to use the Service (Section 4). If you use the Service on behalf of a firm, you represent that you are authorized to accept these Terms for that firm, and "you" includes that firm.

These Terms are a clickwrap agreement. To accept, you must check the box at the end of these Terms confirming you have read and agree to them; we will not process your registration or any submission until you do. We may present an updated version and ask you to accept it again before continued use (Section 16).

2. Definitions

• "Service" — the Kingsfield.ai website, portal, API, Word add-in, browser extension, and the citation-verification engine (the "judge") behind them.
• "Draft" — the de-identified text, file, or set of citations you submit for a ruling.
• "Citation" — an individual item of authority (a case cite, a quotation, or a stated holding) that the Service rules on.
• "Ruling" — the Service's determination for each Citation: Pass (verified), Fail (not verified), or Inconclusive (could not be determined).
• "Audit Capsule" or "Capsule" — the signed, tamper-evident, PII-free record of a submission's Rulings, described in Section 8.
• "PII Tokenizer" / "PII Shield" — the on-device software that replaces client personal identifiers with opaque tokens before a Draft is sent (Section 6).
• "Matter Token" — the opaque identifier that stands in for your real matter; you alone hold the map between a Matter Token and the real matter.
• "Wallet" — your prepaid balance, from which Rulings are billed (Section 9).
• "Your Content" — your Draft and your work product.

3. What Kingsfield is — and is not

Kingsfield is a software tool that verifies legal citations. You submit a de-identified Draft; Kingsfield checks each Citation against its legal corpus and returns a signed Audit Capsule reporting, for each Citation, whether it passed, failed, or was inconclusive.

The Service uses machine-learning components. Like any such tool, its Rulings may contain errors, may be incomplete, and are not guaranteed to be correct. A Pass is a report that the Service verified the Citation at that moment; it is not a guarantee that the Citation is correct, that the authority is good law, or that any document is fit to file.

Kingsfield is not:

• a law firm, a lawyer, or a provider of legal services or legal advice;
• a substitute for your own professional judgment or review; or
• a guarantor that any Citation is correct, that any authority is good law, or that any document is fit to file.

No attorney-client relationship is created by your use of the Service. No legal advice is given. You will not rely solely on any Ruling; you will treat each Ruling as one input to your own review. You remain solely responsible for your work product, including your independent duty under Rule 11 (and any equivalent rule) to verify the law you cite. You make the final decision to accept or reject each Kingsfield result.

4. Eligibility and accounts

The Service is available only to attorneys we have verified as licensed and active with a state bar. We verify your bar status against official bar records at sign-up. You must give accurate registration information, keep your credentials secure, and are responsible for activity under your account. Accounts and credentials are personal to you and may not be shared. We may refuse, suspend, or terminate accounts we cannot verify or that violate these Terms.

5. How the Service works

1. You submit a de-identified Draft (text or a supported file) or individual Citations. You may submit a full Draft, part of a Draft, or a single item.
2. Kingsfield rules on every item of support for the proposition(s) you submit and returns per-Citation Rulings plus a signed Audit Capsule.
3. You may resubmit corrected items as many times as you wish, or correct your work by your own research and not resubmit. Each submission is ruled and recorded separately.

6. Privacy, data handling, and privilege — we do not receive your clients' personal identifiers

The Service is designed so that client personal identifiers are removed on your device before your Draft is sent to Kingsfield. The Kingsfield PII Tokenizer / PII Shield replaces client names, matter captions, and similar identifiers with opaque tokens before your Draft leaves your browser or application.

To rule on your Citations, Kingsfield does receive the de-identified Draft — the legal substance of your submission, with identifiers already replaced by tokens. Kingsfield holds that text in memory only for the purpose of producing the ruling and does not store it. What is retained is a content hash of the submission plus the signed Audit Capsule, which contains only public citation data and your opaque Matter Token — never client identifiers. A fail-closed filter at intake — which detects identifiers independently of the on-device tokenizer, so that each layer catches what the other might miss — rejects and discards anything identifier-shaped that slips past the tokenizer, without logging or re-exposing it.

No training on your submissions. We do not, and we do not permit any third-party provider to, use your Draft, your submitted Citations, or your Rulings to develop, train, fine-tune, or improve any machine-learning or foundation model. We may use only de-identified, aggregated usage data (for example, counts and timing that cannot be traced back to you or your matter) to operate and improve the Service.

Privilege. Using the Service is not intended to, and does not, waive any attorney-client privilege, work-product protection, or other protection that applies to your Draft or work product. Because identifiers are removed on your device and we do not store your Draft, the Service is designed to keep those protections intact.

Because personal identifiers are removed before submission, Kingsfield does not receive or process your clients' personal identifiers, and we do not offer a separate Data Processing Agreement.

You remain responsible for your clients' confidentiality. You must install and run the PII Tokenizer / PII Shield as directed. Before anything leaves your device, the PII Shield verifies on your device that your submission is de-identified, shows you the tokenized submission, and will not release a submission in which it detects identifier residue (it fails closed). You are responsible for reviewing that tokenized submission before you send it. If you disable or bypass the tokenizer and send us identifying information, you do so in breach of these Terms and at your own risk.

You hold the private map between your Matter Tokens and your real matters locally; we never see it.

7. Confidentiality

Each party may receive information the other treats as confidential. Each party will use the other's confidential information only to perform under these Terms, will protect it with at least reasonable care, and will not disclose it to third parties except to its personnel and contractors who need it and are bound to comparable obligations. This does not apply to information that is public through no fault of the recipient, was already known to the recipient without a duty of confidence, is independently developed, or is rightfully received from a third party. A party may disclose the other's confidential information if legally compelled, after giving reasonable notice where lawful. Your Draft and Your Content are your confidential information; the Service's non-public corpus, engine, and methods are ours.

8. The Audit Capsule

The Audit Capsule is a signed, tamper-evident record of what Kingsfield ruled at the time of a submission — the Citations checked and the pass/fail/inconclusive result for each. It is a point-in-time record. It:

• authenticates that Kingsfield ran and what it concluded;
• does not warrant that any Citation is correct or that any authority is good law now or later; and
• is not amended or reissued after the fact — a later law change or a later submission does not alter an earlier Capsule.

You own your work product. We grant you a perpetual right to keep, use, and present your Audit Capsules, including in court, as a record of your verification process.

9. Fees and billing

The Service is pay-as-you-go. There is no subscription and no minimum commitment. You prepay into a Wallet (card payments processed by Stripe); Rulings draw down the Wallet balance.

• We bill only on Citations that PASS. Failed and inconclusive Citations need correction.
• The price of a submission is the published band for the number of Citations that pass, subject to a $10 minimum per submission (so an all-fail submission still costs the minimum).
• A Citation that already passed in an earlier submission of the same matter is not billed again.
• Before we rule, we require an available balance covering the maximum possible charge (as if every submitted Citation passes). You are then charged only for the Citations that actually pass.

Fees are exclusive of taxes. You are responsible for any sales, use, VAT, or similar taxes on your use of the Service, other than taxes on our net income.

Fees are non-refundable except that, at our discretion and as a courtesy, we may refund the fee for a specific Ruling if we confirm that a PASS result was wrong when issued because of a defect on our side (this does not apply to a correct result that a later change in law affects). Current prices are shown in the Service and may change prospectively.

10. Your responsibilities and acceptable use

You agree to:

• verify submissions are de-identified before sending them;
• exercise your own independent professional judgment, and treat Kingsfield Rulings as an input to your review, never a replacement for it;
• retain your Rule 11 and professional-responsibility obligations; and
• use the Service only for your own lawful legal practice.

You will not:

• attempt to reverse-engineer, decompile, or discover the corpus, the judge, or any underlying model, or use the Service or any Ruling to train or build a competing model or product;
• scrape, bulk-extract, or systematically download from the Service, or exceed documented rate limits;
• submit another person's confidential information without authority, or submit content you are not entitled to submit;
• disable, bypass, or tamper with the PII Tokenizer / PII Shield or the intake filter;
• use the Service in violation of any law, court rule, or bar rule;
• share, resell, or sublicense your account or access; or
• interfere with the security or integrity of the Service.

11. Disclaimer of warranties

We guarantee only that we will produce a Ruling on the Citations you submit, whatever the result. Except for that, the Service and the Audit Capsule are provided "as is" and "as available," without warranties of any kind, express or implied, including any warranty of merchantability, fitness for a particular purpose, accuracy, completeness, good-law status, or non-infringement. Because the Service uses machine-learning components, Rulings are probabilistic and may be incorrect or incomplete. We do not warrant that the Service will be uninterrupted or error-free, or that any result is correct. You are responsible for independently confirming every authority you rely on.

Some jurisdictions do not allow the exclusion of certain implied warranties, so parts of the exclusion above may not apply to you; in that case those warranties are limited to the shortest period and narrowest scope allowed by law.

12. Limitation of liability

To the fullest extent permitted by law, and regardless of the theory of liability:

• Kingsfield will not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost profits, lost data, sanctions, adverse rulings, malpractice exposure, or reputational harm, arising from or related to the Service or any result; and
• Kingsfield's total aggregate liability for any and all claims arising from or related to the Service will not exceed the greater of (a) the total fees you paid to Kingsfield in the 6 months before the event giving rise to the claim, or (b) $500.

The cap and the exclusion of damages above do not apply to: (i) your obligation to pay fees; (ii) your indemnification obligations (Section 13); (iii) either party's breach of the Confidentiality section (Section 7); (iv) a party's fraud, gross negligence, or willful misconduct; or (v) liability that cannot be limited or excluded by applicable law.

You acknowledge that the fees reflect this allocation of risk and that Kingsfield would not provide the Service without these limits.

13. Indemnification

You will indemnify, defend, and hold Kingsfield harmless from any third-party claim, and any resulting loss, arising out of your use of the Service in breach of these Terms, including your submission of identifying information in breach of Section 6, your submission of content you were not entitled to submit, or your use of a Ruling in violation of your professional obligations. Kingsfield has no obligation to you for any claim to the extent it arises from a Draft or input you provided that you knew or reasonably should have known was likely to produce an infringing or improper result.

We will give you prompt notice of any claim, let you control the defense (with counsel reasonably acceptable to us), and reasonably cooperate; you will not settle a claim in a way that imposes any obligation on us without our consent.

14. Intellectual property and feedback

The Service, the legal corpus, the judge, and all related software are wholly owned by WalkerNash Development LLC and licensed to you, not sold. We grant you a limited, non-exclusive, non-transferable right to use the Service and to keep and use the Audit Capsules you receive.

Your Draft and Your Content remain yours; we claim no ownership of them and, as described in Section 6, do not receive your clients' personal identifiers. You own your Audit Capsules, except that the underlying public citation data, case information, and any Kingsfield-supplied content reflected in a Capsule are not yours to own and remain the property of WalkerNash Development LLC or its sources; your ownership is of the Capsule as your verification record, not of the underlying public materials.

Feedback. If you send us suggestions, ideas, or other feedback about the Service, we may use it without restriction and without obligation to you, provided we do not identify you, your firm, Your Content, or your confidential information.

15. Suspension and termination

You may stop using the Service at any time. We may suspend or terminate access for breach of these Terms, inability to verify your bar status, non-payment, or misuse. For a material breach that can be cured, we will give you 30 days' notice and an opportunity to cure where practical. Prepaid-wallet balances are refundable on termination. Sections that by their nature should survive (including Definitions, fees owed, Confidentiality, disclaimers, limitation of liability, indemnification, IP, and governing law) survive termination.

16. Changes to these Terms and the Service

We may change these Terms prospectively by posting an updated version with a new effective date; material changes take effect 7 days after posting, and your continued use after that constitutes acceptance. We may change or discontinue features. Prices change prospectively only.

17. Governing law and dispute resolution

These Terms are governed by the laws of Wyoming, without regard to conflict-of-laws rules.

Any dispute arising out of or relating to these Terms or the Service will be resolved by binding individual arbitration administered by the American Arbitration Association (AAA) under its rules, seated in Sheridan County, Wyoming. You and Kingsfield waive any right to a jury trial and to participate in a class, collective, or representative action. Either party may bring an individual claim in small-claims court, and either party may seek injunctive relief for intellectual-property or confidentiality violations in a court of competent jurisdiction.

18. Export controls and sanctions

You represent that you are not located in, and will not use the Service in or on behalf of, any country or party subject to U.S. embargo or sanctions, and that you are not on any U.S. government restricted-party list. You will comply with all applicable export-control and sanctions laws in your use of the Service.

19. Force majeure

Neither party is liable for a delay or failure to perform (other than a payment obligation) caused by events beyond its reasonable control, including acts of God, natural disasters, war, terrorism, civil unrest, labor disputes, utility or network failures, and acts of government.

20. General

• Assignment. You may not assign these Terms without our consent; we may assign them to an affiliate or successor (for example, in a merger or sale of assets).
• Severability. If any provision is unenforceable, the rest remains in effect and the provision is enforced to the maximum extent permitted.
• No waiver. Our failure to enforce a provision is not a waiver of it.
• No third-party beneficiaries. These Terms do not create any rights in anyone other than you and Kingsfield, except that our affiliates and licensors may enforce provisions that protect them.
• Third-party sources. The Service checks Citations against public legal sources and may link to third-party sites (for example, court-record databases). We do not control and are not responsible for the accuracy, availability, or content of those sources or sites.
• Electronic communications. You consent to receive notices and disclosures from us electronically, including by email and through the Service.
• Entire agreement; non-reliance. These Terms are the entire agreement between you and Kingsfield regarding the Service and supersede prior understandings. You have not relied on any statement, benchmark, accuracy figure, or promise outside these Terms in deciding to use the Service.
• Notices. We may give you notice by email or in the Service. You may give us notice at the address in Section 21; legal notices are effective when received.

21. Contact

Questions about these Terms, and legal notices, may be submitted to WalkerNash Development LLC: [email protected].