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Effective date: March 21, 2026.
By accessing or using DiffHook's website, APIs, dashboards, and related services (collectively, the "Service"), you agree to these Terms of Service ("Terms"). If you are using the Service on behalf of an organization, you represent that you have authority to bind that organization. If you do not agree, do not use the Service.
These Terms form a binding agreement between you (or the organization you represent, collectively "you") and KupaLabs FZCO, a company incorporated under the laws of the Dubai Integrated Economic Zones Authority (DIEZA), with registered address at Building A1, Dubai Digital Park, Dubai Silicon Oasis, Dubai, United Arab Emirates (License No. 52710; Tax Registration No. 104850133000001), and the operator of the DiffHook service ("KupaLabs," "DiffHook," "we," "us").
We may update these Terms from time to time. We will post the revised Terms on this page and update the effective date. For material changes — meaning changes that materially reduce your rights or increase your obligations — we will provide at least 30 days' prior written notice by email to the address associated with your account or via an in-product notice. Your continued use of the Service after the effective date of changes constitutes acceptance of the revised Terms, except where applicable law requires express consent.
DiffHook provides web change monitoring, alerting, APIs, webhooks, integrations, and related features as described on our website and in our documentation. The Service is offered on a subscription or free-tier basis according to the plans and limits published at the time you sign up.
We may modify, suspend, or discontinue parts of the Service (including features, limits, or third-party integrations) for maintenance, security, legal compliance, or product reasons. Where practicable, we will provide reasonable advance notice of material adverse changes. We do not guarantee uninterrupted or error-free operation.
Nothing in our marketing materials, website, or documentation constitutes a warranty or representation that supplements or varies these Terms unless expressly incorporated by a signed written addendum.
You must be at least 18 years of age (or the age of majority in your jurisdiction) and legally capable of entering binding contracts to use the Service. By using the Service you represent that you meet these requirements. The Service is intended for business, developer, and commercial use and is not directed to consumers for personal household purposes.
You must provide accurate registration information and keep it current. You are responsible for maintaining the confidentiality of your credentials, API keys, and tokens, and for all activity that occurs under your account except where caused by our gross negligence or willful misconduct. Promptly notify us at support@diffhook.com if you suspect unauthorized access.
If you use the Service on behalf of an organization, you are responsible for ensuring that all users under your account comply with these Terms.
Auto-renewal. Paid subscriptions renew automatically at the end of each billing period (monthly or annual, as selected) at the then-current plan rate, until cancelled. By purchasing a paid plan, you authorize DiffHook to charge your payment method on a recurring basis without further action by you.
Notice before annual renewal. For annual plans, we will send a renewal reminder email to your registered address at least 30 days before the renewal date.
Cancellation. You may cancel your subscription at any time through your account Billing settings or by contacting support@diffhook.com. Cancellation takes effect at the end of the current billing period; you retain access through that date. Cancellation does not entitle you to a refund for any portion of the current period already paid, except as stated in the Refunds section below or as required by applicable law.
Refunds. If you are dissatisfied with the Service, contact support@diffhook.com within 7 days of a charge and we will evaluate a refund at our reasonable discretion. Prorated credits or refunds are issued when you downgrade mid-period through the in-app flow. Except as expressly stated here or required by applicable law, fees are non-refundable.
EU/UK 14-day withdrawal. If you are an EU or UK consumer and you have not requested or consented to immediate performance of a digital service, you may withdraw from a paid subscription contract within 14 days of purchase without giving any reason, subject to applicable national law. To exercise this right, contact support@diffhook.com before performance begins or before the 14-day period expires. Once you have requested immediate access and performance has begun, you acknowledge your withdrawal right is extinguished for that portion already delivered.
Paid plans are billed at the prices shown at checkout or in your billing settings, inclusive of any applicable taxes. We will provide at least 30 days' prior written notice by email before any price increase takes effect for existing subscribers. During that notice period you may cancel your subscription without penalty. If you do not cancel, the new price applies at your next renewal following expiry of the notice period. DiffHook reserves the right to introduce new pricing tiers, add features to existing tiers, or change the feature composition of any tier at any time with reasonable notice.
You agree not to misuse the Service. Without limitation, you must not:
DiffHook respects robots.txt directives as a matter of policy and configures its crawlers to honor standard exclusion protocols. However, robots.txt has no independent legal force, and compliance with robots.txt does not substitute for your obligation to ensure your configured monitors comply with applicable law and the target site's terms of service.
We may investigate suspected violations and suspend or terminate access if we reasonably believe a violation has occurred or is ongoing.
Your data. You retain ownership of data you submit (including URLs, monitor configuration, labels, webhook endpoints, and any other content you provide). You grant DiffHook a worldwide, non-exclusive, royalty-free license to host, process, transmit, and display such data solely as necessary to provide, secure, and improve the Service.
Third-party content. Webhook payloads and delivery logs may contain content retrieved from URLs you monitor ("Scraped Content"). Such content is owned by the respective third-party site operators. DiffHook does not claim any ownership in Scraped Content. You are solely responsible for ensuring that your use of Scraped Content complies with applicable copyright law, the terms of service of the target site, and any applicable privacy law. DiffHook's processing of Scraped Content on your behalf does not constitute endorsement, authorization, or warranty of the legality of your use.
Your representations. You represent and warrant that: (a) you have the right to configure monitors for the URLs you designate; (b) your use of the Service and Scraped Content complies with all applicable laws, including copyright, privacy, and computer access laws; and (c) your use of the Service does not violate the rights of any third party, including the operators of monitored URLs.
GDPR — data processing. Where you use the Service to process personal data of individuals in the European Economic Area, United Kingdom, or Switzerland, and DiffHook acts as a data processor on your behalf, our Data Processing Agreement ("DPA") — available at support@diffhook.com or in your account settings — supplements these Terms and governs such processing. By using the Service in that context, you agree to the DPA.
DiffHook respects intellectual property rights. If you believe that content accessible through or stored by our Service infringes your copyright, you may submit a takedown notice to our designated DMCA agent:
DMCA Agent: KupaLabs FZCO (operating as DiffHook) — Attn: Legal / DMCA Email: support@diffhook.com
Your notice must include: (i) an electronic or physical signature of the copyright owner or authorized representative; (ii) identification of the copyrighted work claimed to be infringed; (iii) identification of the material alleged to be infringing, with sufficient detail for us to locate it; (iv) your contact information; (v) a statement of good-faith belief that the use is unauthorized; and (vi) a statement under penalty of perjury that the information is accurate and you are authorized to act.
We will process valid takedown notices in accordance with the DMCA (17 U.S.C. § 512) and will terminate accounts of repeat infringers in appropriate circumstances. Counter-notices may be submitted to the same address in accordance with 17 U.S.C. § 512(g).
Subscription fees are charged in advance for each billing period. Failure to pay may result in suspension or downgrade of paid features. If you dispute a charge, contact us promptly so we can investigate. We reserve the right to use third-party payment processors and collection agencies for overdue amounts. You are responsible for all applicable taxes on your subscription, which may be collected at checkout depending on your location.
DiffHook and its licensors retain all rights, title, and interest in and to the Service, including its software, algorithms, branding, documentation, and aggregated analytics (excluding your Customer data and Scraped Content as defined in Section 7). Except for the limited rights expressly granted in these Terms, no rights are transferred to you.
Feedback you provide about the Service may be used by us for any purpose without obligation or compensation to you. You acknowledge that DiffHook is not obligated to implement or maintain any submitted feedback.
The Service may integrate with or depend on third-party platforms (e.g., Stripe for payments, Slack and Discord for notifications, cloud hosting providers). Those services are governed solely by their own terms and privacy policies. We are not responsible for the availability, accuracy, or compliance of third-party services, and we are not liable for any loss or damage arising from your use of or reliance on third-party services.
Each party may receive non-public information about the other in connection with the Service ("Confidential Information"). Each party agrees to use the other's Confidential Information only as necessary to fulfill obligations or exercise rights under these Terms, and to protect it with at least the same degree of care used to protect its own confidential information (no less than reasonable care). This obligation does not apply to information that is or becomes publicly available through no fault of the receiving party, was independently developed, or is required to be disclosed by law or regulation (provided the receiving party gives reasonable prior notice where permitted).
DiffHook implements industry-standard technical and organizational security measures to protect your data against unauthorized access, disclosure, alteration, or destruction. In the event of a confirmed security breach that affects your personal data or Customer data, DiffHook will:
This notification commitment does not create any additional liability beyond what is stated in Section 17 (Limitation of liability) or expand any indemnity obligation.
The Service is subject to applicable export control laws and economic sanctions, including UAE export regulations and, to the extent applicable to US-origin technology, the U.S. Export Administration Regulations (EAR) and sanctions administered by the U.S. Office of Foreign Assets Control (OFAC). You represent and warrant that:
DiffHook may terminate or suspend your account immediately, without notice or liability, to comply with applicable export control or sanctions obligations.
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE." TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, DIFFHOOK DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT: (A) THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR SECURE; (B) MONITORING RESULTS WILL BE COMPLETE, ACCURATE, OR TIMELY; OR (C) ANY DEFECTS WILL BE CORRECTED.
NOTHING IN THIS SECTION LIMITS WARRANTIES THAT CANNOT BE DISCLAIMED UNDER APPLICABLE MANDATORY CONSUMER PROTECTION LAW IN YOUR JURISDICTION.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT WILL DIFFHOOK, ITS AFFILIATES, OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, OR SUPPLIERS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR LOSS OF PROFITS, REVENUE, DATA, GOODWILL, OR BUSINESS OPPORTUNITY, ARISING FROM OR RELATED TO THESE TERMS OR THE SERVICE, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY (CONTRACT, TORT, STRICT LIABILITY, OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
OUR AGGREGATE LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATED TO THE SERVICE OR THESE TERMS, REGARDLESS OF THE FORM OF ACTION, WILL NOT EXCEED THE GREATER OF: (A) THE TOTAL FEES PAID BY YOU TO DIFFHOOK IN THE TWELVE (12) MONTHS IMMEDIATELY PRECEDING THE EVENT GIVING RISE TO THE CLAIM; OR (B) ONE HUNDRED US DOLLARS (USD $100) IF YOU HAVE NOT PAID ANY FEES.
THE ABOVE LIMITATIONS APPLY REGARDLESS OF WHETHER DIFFHOOK HAS BEEN INFORMED OF THE POSSIBILITY OF SUCH LOSSES AND NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY LIMITED REMEDY. Some jurisdictions do not allow certain exclusions or limitations of liability; in those cases, our liability is limited to the fullest extent permitted by applicable law. Nothing in these Terms limits liability that cannot lawfully be limited (including liability for fraud or fraudulent misrepresentation, or death or personal injury caused by negligence).
By you. You will defend, indemnify, and hold harmless KupaLabs FZCO and its affiliates, officers, directors, employees, contractors, and agents (collectively, "DiffHook Parties") from and against any and all claims, demands, lawsuits, investigations, damages, losses, liabilities, costs, and expenses (including reasonable attorneys' fees) arising from or relating to:
(a) your use of or access to the Service; (b) your Customer data or Scraped Content, including any claim by a third-party site operator that your configured monitors constitute unauthorized access or copyright infringement; (c) any claim under the Computer Fraud and Abuse Act or equivalent law arising from monitors you configured; (d) your violation of these Terms, any applicable law, or any third-party right (including intellectual property rights, privacy rights, and rights under the target site's terms of service); (e) any claim by a third party arising from personal data retrieved by your monitors.
This indemnification obligation applies to each DiffHook Party individually, including individual directors and officers, to the fullest extent permitted by law.
Exceptions. You have no indemnification obligation to the extent the claim arises from DiffHook's own gross negligence, willful misconduct, or material breach of these Terms.
Process. DiffHook will: (i) promptly notify you in writing of any claim for which it seeks indemnification; (ii) give you reasonable control of the defense and settlement, provided you may not settle any claim that imposes any obligation or admission on DiffHook without our prior written consent; and (iii) provide reasonable cooperation at your expense.
These Terms remain in effect until terminated. You may stop using the Service or cancel your subscription at any time as described in Section 4.
We may suspend or terminate your access immediately if: (a) you breach any provision of these Terms and fail to cure within 10 days of written notice (or immediately for breaches that cannot be cured or that create legal or security risk); (b) you fail to pay applicable fees; (c) we are required to do so by law, regulation, or order; or (d) continued provision would expose DiffHook to legal liability.
Effect of termination. Upon termination, your right to use the Service ceases immediately. You will have 30 days from the date of termination to export your data using the Service's export tools or by contacting support@diffhook.com. After that 30-day period, DiffHook will delete or anonymize your Customer data within a further 60 days, except where longer retention is required for legal, tax, accounting, dispute resolution, or security purposes.
Survival. The following provisions survive termination of these Terms for any reason: Sections 7 (Customer data representations and DMCA agent), 8 (DMCA), 10 (Intellectual property), 12 (Confidentiality), 15 (Disclaimer of warranties), 16 (Limitation of liability), 17 (Indemnification), 19 (Governing law and disputes), and 20 (General).
Governing law. These Terms are governed by the laws of the United Arab Emirates and, to the extent applicable, the rules and regulations of the Dubai Integrated Economic Zones Authority (DIEZA). The United Nations Convention on Contracts for the International Sale of Goods does not apply.
Informal resolution. Before initiating any formal dispute process, each party agrees to try in good faith to resolve the dispute by contacting support@diffhook.com (for claims against DiffHook) or notifying you at your registered account email (for claims against you). The parties will attempt to negotiate a resolution for 30 days from the date of written notice. This informal process is a condition precedent to formal proceedings.
Disputes. Except as set out below, all disputes, claims, or controversies arising out of or relating to these Terms or the Service that are not resolved informally will be subject to the exclusive jurisdiction of the courts of Dubai, UAE (or, by mutual agreement, resolved through arbitration conducted in English in Dubai under the rules of the Dubai International Arbitration Centre ("DIAC")). Each party will bear its own costs unless the tribunal determines that the claim was frivolous or asserted in bad faith.
Class action waiver. TO THE MAXIMUM EXTENT PERMITTED BY LAW, YOU AND DIFFHOOK AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN AN INDIVIDUAL CAPACITY AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, CONSOLIDATED, OR REPRESENTATIVE ACTION OR PROCEEDING. If this waiver is found unenforceable in a particular proceeding, that proceeding may not proceed as a class action.
EU/UK consumers. If you are a consumer in the European Union or United Kingdom, mandatory local consumer protection law may require that disputes be resolved by national courts or an approved alternative dispute resolution (ADR) body. Nothing in this Section limits rights you have under applicable mandatory EU or UK consumer protection law, including access to the EU Online Dispute Resolution platform (https://ec.europa.eu/consumers/odr).
Severability. If any provision of these Terms is held invalid, illegal, or unenforceable by a court of competent jurisdiction, that provision will be modified to the minimum extent necessary to make it enforceable, or severed if modification is not possible, and the remaining provisions will continue in full force and effect.
Waiver. No failure or delay by either party in exercising any right or remedy under these Terms will constitute a waiver of that right or remedy. A waiver of any particular breach does not waive any subsequent breach.
Entire agreement. These Terms (together with the Privacy Policy, any applicable DPA, and any signed order form) constitute the entire agreement between you and DiffHook regarding the Service and supersede all prior and contemporaneous representations, understandings, negotiations, and agreements, whether written or oral, relating to their subject matter.
Assignment. DiffHook may assign or transfer these Terms, in whole or in part, to any affiliate or to a successor entity in connection with a merger, acquisition, corporate reorganization, or sale of substantially all of DiffHook's assets, without your consent, provided the assignee agrees to be bound by these Terms. You may not assign or transfer these Terms or any rights or obligations hereunder without DiffHook's prior written consent. Any attempted assignment in violation of this Section is void.
Force majeure. Neither party will be liable for any failure or delay in performance under these Terms to the extent caused by circumstances beyond that party's reasonable control, including acts of God, natural disasters, pandemic or epidemic, war, terrorism, civil unrest, government actions, internet or telecommunications infrastructure failures not caused by that party's negligence, or cyberattacks on third-party infrastructure. The party affected must: (i) promptly notify the other party; (ii) use reasonable efforts to mitigate the impact; and (iii) resume performance as soon as reasonably practicable. If the force majeure event continues for more than 30 days, either party may terminate the affected services upon written notice without further liability.
Notices. Legal notices to DiffHook must be sent to support@diffhook.com with a copy to KupaLabs FZCO, Attn: Legal, Building A1, Dubai Digital Park, Dubai Silicon Oasis, Dubai, United Arab Emirates. We will send notices to the email address associated with your account. Notices are effective upon confirmed delivery.
Relationship. The parties are independent contractors. Nothing in these Terms creates a partnership, joint venture, agency, or employment relationship.
No third-party beneficiaries. These Terms do not confer any rights on any third party except that DiffHook Parties (as defined in Section 17) may enforce the indemnification obligations in Section 17 as intended third-party beneficiaries.
For questions about these Terms or to request a DPA, email support@diffhook.com or visit Support.