Terms of service

Version 1.0 · Effective 13 November 2026

These terms govern your use of the Eureka Search API and the Eureka Search console (together, the "Service"). The Service is provided by LOGICANCE S.L., NIF B93934537, Calle Jesús 81, Esc. A, 2º, Pta. 6, 46007 Valencia, Spain ("we", "us"). Questions: api@eurekasearch.eu.

1. What the Service is

1.1 Eureka Search is a European web search index that we build with our own crawler. The API answers search requests with ranked results and passages from public web pages and official sources. The console is where you manage your account, API keys, usage and billing.

1.2 Each result names its source, its date and, where known, its licence and the attribution it requires.

1.3 We change and improve the Service over time. We tell you by email at least 30 days before a change that removes a feature you use or breaks the API's request or response format, unless a change is needed sooner for security or by law.

2. Your account

2.1 You need an account to use the API. You may open one as a business (a company, public body or a person acting for their trade or profession) or as an individual. Individual accounts are open to residents of the EU and the EEA only. You must be at least 18.

2.2 The details you give us must be true and kept up to date. One account belongs to one customer; its owner is the person who signed up.

2.3 You are responsible for everything done with your account and your API keys. Keep keys secret: store them in a secret manager or environment variable, never in public code or in a browser. If a key may have leaked, revoke it in the console at once. We show each key only once and store only a fingerprint of it, so we cannot recover a lost key.

2.4 We recommend two-step sign-in. We may require it for accounts with high limits.

3. The beta

3.1 While the beta runs, accounts are opened by invitation and use is free within the limits shown in the console.

3.2 The beta has no service level commitment. We may change limits, pause the Service for maintenance or end the beta. We will email you at least 30 days before paid use starts; nothing is charged until you add credit yourself.

4. Prices and payment

4.1 Units. Each answered request uses units: a search, document or find request uses 1 unit; a context request uses 2 units. Only requests we answer with HTTP status 200 use units. Errors, timeouts, refusals and requests over a limit use none. An answer with no results still uses units.

4.2 Price. €2 per 1,000 units, excluding VAT, unless the console or a written agreement shows another price. The first 1,000 units each calendar month (UTC) are free. Unused free units do not carry over.

4.3 Prepaid credit. You pay in advance by buying credit in the console. Each answered request is charged against your credit after the free units are used. When your credit reaches zero, your keys answer with status 402 until you add credit. Usage is recorded within about a minute, so the balance may go slightly below zero; the difference is taken from your next purchase.

4.4 Automatic top-up. If you turn it on, we charge your saved card the amount you chose when your balance falls below the threshold you chose, up to the monthly limit you set. You can turn it off at any time.

4.5 VAT and invoices. Prices exclude VAT. We add VAT as the law requires: Spanish VAT for customers in Spain; reverse charge for businesses in another EU country with a VAT number valid in the EU VIES register; VAT of the customer's country for individuals in the EU; no Spanish VAT for businesses outside the EU. Every purchase gets an invoice, available in the console.

4.6 Validity. Purchased credit can be used for 12 months from the date of purchase. Credit unused after 12 months expires.

4.7 Refunds. Credit is not refundable, except (a) as section 5 provides for individuals, (b) where we charged in error, and (c) where we end the Service or your account without cause under section 9.3, in which case we refund unused purchased credit.

4.8 Price changes. We give at least 30 days' notice by email of a price increase. Credit bought before the change is used at the old price.

4.9 Payments are processed by our payment provider. We never see or store your full card number.

5. Right of withdrawal for individuals in the EU

If you are an individual (a consumer), you may withdraw from a credit purchase within 14 days of buying it by writing to api@eurekasearch.eu or using the console. We refund the unused part of that purchase within 14 days, to the card you paid with. Credit you have already used is not refunded. This does not apply to business accounts.

6. How you may use the Service

6.1 You may use the API and its results in your own products and services, including AI applications that show answers to your users, provided you follow these terms and each result's licence and attribution.

6.2 You must not:

• share your keys with another customer, or resell or sublicense access to the API as such;
• use the API to build, train or improve a competing web search index or search API, or to copy our index in bulk;
• store results to build a database or dataset of our index. You may keep results inside the answers, chats and documents you make for your users. A separate cache of raw results may keep each result for up to 24 hours, unless the result's own licence allows longer;
• remove or hide the source, licence or attribution a result carries when you show it to people;
• try to get around rate limits, use many accounts to raise your limits, or send traffic that harms the Service or other customers;
• probe, scan or test the security of the Service without our written permission;
• use the Service for anything unlawful, including to infringe rights in content, to process personal data without a lawful basis, or to profile people;
• send queries that contain special categories of personal data (GDPR Article 9) or data about criminal convictions, unless the law allows it and you are responsible for it.

6.3 Rate limits and the number of keys are shown in the console. We may lower them for an account that harms the Service.

7. Content in the results

7.1 Results contain text and links from third-party pages and official sources. We do not own that content and give no licence to it beyond what its owner gives. You are responsible for how you use it.

7.2 Results may be incomplete, out of date or wrong. Ranking is automatic. Check anything you or your users rely on.

7.3 Site owners can ask us to remove their content. When we remove a page from the index, stop serving it from any cache of raw results within the period in section 6.2.

8. Your data

8.1 Queries. We use the queries and parameters you send only to answer them. The API does not log or store query text, and we never use queries to train models or to improve ranking. We keep counts with no query content (requests, units and errors per key and hour) for billing, limits and service quality.

8.2 Account and billing data. How we handle it is in our privacy notice.

8.3 Data processing agreement. For business accounts, the Data Processing Agreement at console.eurekasearch.eu/legal/dpa forms part of these terms and applies to personal data in your queries.

9. Suspension and termination

9.1 You can close your account at any time in the console. Your keys stop at once.

9.2 We may suspend your keys at once if (a) you break section 6, (b) a payment is disputed or reversed, (c) your account is used in a way that threatens the security or stability of the Service, or (d) the law requires it. We tell you why, unless the law forbids it, and restore access when the cause is fixed.

9.3 We may end the Service or your account with 30 days' notice by email for any reason. Section 4.7(c) then applies.

9.4 Sections 4.3 (amounts owed), 6, 7, 10 and 12 survive the end of these terms.

10. Liability

10.1 The Service is provided as it is, without any warranty of availability, accuracy or fitness for a purpose, to the extent the law allows.

10.2 For business accounts, our total liability arising from the Service in any 12 months is limited to the amount you paid us in those 12 months, and we are not liable for indirect loss, loss of profit, revenue or data.

10.3 Nothing in these terms limits liability for death or personal injury caused by negligence, for fraud or wilful misconduct, or any liability that cannot be limited by law. For individuals, the statutory rights of consumers under Spanish and EU law apply in full.

11. Changes to these terms

We may change these terms. We email the account owner at least 30 days before a change takes effect. If you do not agree, you can close your account before that date and section 4.7(c) applies to your unused purchased credit.

12. Law and courts

These terms are governed by Spanish law. Disputes go to the courts of Valencia, Spain, except where consumer law gives an individual the right to use the courts of their own domicile.