Terms of Service

Last updated: October 7, 2026

These Terms of Service ("Terms") govern access to and use of the SPO.expert website at spo.expert, the client dashboard, the SPO.expert measurement tag and the related reports and analyst features (together, the "Service"), operated by SPO.expert — Roman Sarychev, Lisbon, Portugal ("SPO.expert," "we," "our," or "us"). By using the Service you agree to these Terms. If you use the Service on behalf of a company or other organization, you confirm that you have the authority to bind it, and "Client" and "you" refer to that organization.

Where SPO.expert and the Client have signed an agreement for the Service (an order form, pilot agreement or master agreement), that agreement prevails over these Terms in case of conflict.

1. The Service

The Service analyzes programmatic supply paths from the impression data the Client sends through the SPO.expert measurement tag. It validates each supply chain against the IAB OpenRTB SupplyChain specification, verifies every hop against the public authorization files published by the parties in the chain (sellers.json, ads.txt and app-ads.txt), and presents the results in a dashboard, in reports and through an AI analyst. Features may change over time; we aim to give reasonable notice of material changes.

2. Accounts

SPO.expert creates dashboard accounts for the people the Client authorizes. The Client is responsible for everyone it authorizes and for all activity under its accounts. Each account holder agrees to:

  • provide accurate and current account information and keep it up to date;
  • keep login credentials confidential and not share them with anyone outside the Client;
  • notify us promptly of any unauthorized use of an account.

We may suspend or close accounts that contain inaccurate information or are used in violation of these Terms.

3. The Measurement Tag and the Client's Data

3.1 What the Client sends. The Client decides what it sends through the tag and is responsible for it. The tag is designed to carry data about the advertising transaction (supply chain, seller identifiers, domains and app bundles, bid identifiers and prices) and nothing about the person who saw the ad.

3.2 Client warranties. The Client represents and warrants that:

  • it has all rights, licenses and permissions needed to send the data to SPO.expert and to have it processed as described in these Terms and the Privacy Policy;
  • sending the data complies with applicable law and with the Client's agreements with its partners;
  • it will not include personal data, device identifiers, user identifiers or any other information about an end user in the tag's parameters;
  • its own ad serving carries whatever notices and permissions the law requires of it; SPO.expert does not provide them on the Client's behalf.

3.3 Ownership and license. The Client retains ownership of the data it sends ("Client Data"). The Client grants SPO.expert a non-exclusive license to host, process and analyze Client Data to provide, secure and improve the Service for the Client, including to keep the Service's checks accurate.

3.4 Aggregated data. SPO.expert may create and use aggregated or de-identified data derived from the operation of the Service — for example, which seller domains publish a valid sellers.json, or how often a given supply-chain error occurs across all clients — to operate and improve the Service and to produce industry insights, including periodic reports and rankings of supply-chain participants, provided such data does not identify the Client, its partners' commercial terms or its revenue.

3.5 Personal data. Where data processed for the Client includes personal data, SPO.expert processes it on the Client's behalf as a processor under our Data Processing Addendum, which forms part of these Terms; a countersigned copy is available on request. Our Privacy Policy describes the data the Service handles, our service providers and our safeguards.

4. Acceptable Use

The Client shall use the Service only for its own lawful business purposes and shall not:

  • violate applicable law or third-party rights in using the Service;
  • attempt to gain unauthorized access to any part of the Service, other accounts, or the systems connected to it;
  • interfere with or disrupt the integrity or performance of the Service or its infrastructure, including by sending synthetic, test or duplicated traffic through the tag without telling us first;
  • transmit malicious code through the Service;
  • use automated means (bots, scrapers, crawlers) to access the dashboard or extract data from it without our written permission;
  • reverse engineer, decompile or disassemble any part of the Service, or attempt to reconstruct its rule set;
  • resell, sublicense, share or redistribute access to the Service or its outputs to third parties without our written consent.

5. Results, Reports and the AI Analyst

5.1 How results are produced. Verdicts are computed by deterministic rules from two sources: the data the Client sends, and the public files published by third parties in the supply chain (sellers.json, ads.txt, app-ads.txt) read against the IAB specifications. Those files are maintained by their publishers, not by SPO.expert; they can be incomplete, outdated or wrong, and they change without notice.

5.2 What a verdict means. A "not verified" or "not validated" result means that, at the time of the check, the path could not be verified against those sources. It is not a finding that any party acted unlawfully or in bad faith, and SPO.expert makes no statement about any third party beyond what those public files and the Client's own data show.

5.3 Money figures. Amounts shown in the Service are sums of the bid prices the Client reported through the tag for the affected impressions. They are not measured losses, recoverable revenue or forecasts.

5.4 The AI analyst. Explanations and answers are generated with a third-party language model from the Client's own data. They can be inaccurate, incomplete or out of date, and they do not constitute legal, financial, tax or other professional advice.

5.5 Decisions are the Client's. The Service provides information to support the Client's own decisions. The Client is solely responsible for any action it takes based on the Service — including changing, pausing or ending commercial relationships — and should verify findings before acting on them. SPO.expert is not liable to the Client or to any third party for such decisions.

6. Confidentiality

Each party will keep the other party's non-public information confidential, use it only for the purposes of the Service, and protect it with at least reasonable care. For the Client this covers SPO.expert's methods, rule set, pricing and non-public product information; for SPO.expert it covers Client Data, the Client's reports and its commercial relationships. The obligation does not apply to information that is public through no fault of the receiving party, was already lawfully known to it, or must be disclosed by law (with notice to the other party where permitted). It survives for three years after the Service ends; for Client Data, for as long as we hold it.

7. Intellectual Property

The Service — including its software, rule set, design, text, graphics, logos, report formats and all other content — is owned by SPO.expert and protected by copyright, trademark and other intellectual property laws. During the term, the Client receives a non-exclusive, non-transferable right to use the Service and its outputs for the Client's internal business purposes. No other rights are granted. If the Client gives us feedback or suggestions, we may use them without restriction or obligation.

8. Third-Party Services

The Service relies on third-party providers (listed in the Privacy Policy) and may link to third-party websites or services. We do not control them and are not responsible for their content, practices or availability.

9. Fees

Unless a signed agreement states otherwise, the Service is provided free of charge during an evaluation. Where fees apply, they are set out in the signed agreement, and:

  • fees are as stated at the time of agreement and may change with at least 30 days' notice before the start of a new billing period;
  • payments are non-refundable unless otherwise agreed or required by law;
  • the Client is responsible for providing accurate billing information;
  • we may suspend access for non-payment after reasonable notice.

10. Availability, Changes and Suspension

We work to keep the Service available but do not guarantee uninterrupted or error-free access. We may modify or discontinue parts of the Service with reasonable notice of material changes. We may suspend access immediately where necessary to protect the Service, its users or third parties — for example in case of abusive or excessive traffic, a security incident or a legal requirement — and will inform the Client as soon as practicable.

11. Disclaimer of Warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE." TO THE FULLEST EXTENT PERMITTED BY LAW, WE DISCLAIM ALL WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICE WILL MEET THE CLIENT'S REQUIREMENTS, THAT RESULTS WILL BE ACCURATE, COMPLETE OR CURRENT (SEE SECTION 5), OR THAT ERRORS WILL BE CORRECTED.

12. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, SPO.EXPERT AND ITS OWNERS, EMPLOYEES AND CONTRACTORS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA, USE OR GOODWILL, ARISING FROM OR RELATED TO THE SERVICE OR THESE TERMS, HOWEVER CAUSED.

Our total aggregate liability for all claims arising from or related to the Service or these Terms shall not exceed the fees the Client paid us in the twelve (12) months preceding the claim or, if no fees were paid, EUR 1,000.

Nothing in these Terms limits or excludes liability that cannot be limited or excluded by law, including liability for wilful misconduct.

13. Indemnification

The Client will indemnify, defend and hold harmless SPO.expert and its owners, employees and contractors from and against all claims, damages, losses, liabilities, costs and expenses (including reasonable legal fees) arising from or related to the Client's use of the Service, the data the Client sent through the tag, the Client's breach of these Terms, or decisions the Client took based on the Service — including claims brought by the Client's partners or end users.

14. Term and Termination

The term, termination conditions and notice periods are governed by the signed agreement between the parties. In the absence of a signed agreement, either party may end the Service on 30 days' written notice, and we may end it immediately for a material breach of these Terms that is not cured within 10 days of notice.

When the Service ends:

  • the Client's access to the dashboard ceases as specified in the signed agreement (or at the end of the notice period);
  • we delete the Client's accounts and Client Data after the retention period defined in the signed agreement, or within 90 days if none is specified, unless we are legally required to keep it; residual copies in encrypted backups are overwritten in the ordinary backup cycle;
  • sections 3.4, 5, 6, 7, 11, 12, 13, 15 and 17 survive.

15. Governing Law and Disputes

These Terms are governed by the laws of Portugal, without regard to its conflict-of-law rules. The parties will first try to resolve any dispute in good faith within 30 days of written notice. Failing that, the courts of Lisbon, Portugal, have exclusive jurisdiction. Mandatory provisions of the law of the Client's country that cannot be contracted out of are not affected. These Terms are drafted in English; the English version governs any translation.

16. Changes to These Terms

We may update these Terms from time to time. Material changes are announced by posting the updated Terms on this page and updating the "Last updated" date, and, for Clients with active accounts, by email. Continued use of the Service after the change constitutes acceptance; a Client that does not agree must stop using the Service.

17. General

  • Entire agreement. These Terms, the Privacy Policy, the Data Processing Addendum and any signed agreement form the entire agreement between the Client and SPO.expert regarding the Service and supersede prior agreements and communications on the same subject.
  • Severability. If a provision is found unenforceable, it is limited to the minimum extent necessary and the rest remains in force.
  • Assignment. The Client may not assign these Terms without our written consent. We may assign them to a successor of our business with notice.
  • Notices. Notices to SPO.expert go to [email protected]; notices to the Client go to the email address of its account holders or the address in the signed agreement.
  • No waiver. A party's failure to enforce a provision is not a waiver of it.
  • Force majeure. Neither party is liable for delays or failures caused by events beyond its reasonable control.
  • Independent parties. The parties are independent contractors; these Terms create no partnership, agency or employment relationship.

18. Contact