Last updated: July 30, 2026

1. Acceptance of Terms

By accessing or using Calius (the "Service", "we", "us"), you ("User", "you") agree to be bound by these Terms of Service. If you do not agree, do not use the Service. By creating an account, subscribing to a plan, or using the software, you confirm that you have read and understood these Terms and that you enter into this agreement electronically.

The Service is operated by Centex Solutions, Luca Meier, Feldweiher 20, 91085 Weisendorf, Germany (VAT ID: DE355698925). Contact: privacy@calius.io.

When you accept these Terms, we record the details of your acceptance as proof of consent. This record includes the date and time of acceptance, the version of the Terms you accepted, your IP address, your browser user agent, and basic device information reported by your browser. We use this record solely to evidence that you agreed to these Terms, as described in our Privacy Policy.

2. Description of Service

Calius is an inventory management, cross-listing and automation tool that interfaces with third-party marketplaces (including but not limited to Vinted, Kleinanzeigen, Vestiaire Collective, eBay, StockX and Alias). Calius is an independent service and is not affiliated with, endorsed by, or in any way officially connected to any third-party platform it integrates with. We do not guarantee continued availability of any integration or feature.

3. Eligibility and Account

You must be at least 18 years old and have full legal capacity to enter into a contract. Access requires a Discord account for authentication. You are responsible for keeping your login credentials, license key and devices secure, and for all activity that occurs through them.

4. Subscriptions, Pricing and Payment

4.1 Plans and prices

The Service is offered as a paid subscription in the plans and at the prices published at calius.io at the time of your order. All prices are stated net and exclusive of value added tax (VAT). Applicable VAT is calculated and displayed during checkout based on your location and tax status. Business customers within the EU (outside Germany) may enter a valid VAT identification number, in which case the reverse charge procedure applies.

4.2 Term and automatic renewal

Subscriptions are offered with a monthly or an annual billing period, selected by you at checkout. The subscription begins upon successful payment and renews automatically for the same billing period unless cancelled before the end of the then-current period.

If you are a consumer: after the end of the initial billing period, the subscription continues for an indefinite term and can be cancelled by you at any time with a notice period of no more than one month, in accordance with section 309 no. 9 of the German Civil Code (BGB).

4.3 Cancellation

You can cancel your subscription at any time in your dashboard under Settings via "Manage payments", which opens the customer portal of our payment provider. No reason is required and no cancellation fee applies. Cancellation takes effect at the end of the current billing period; you retain full access until then. We may terminate the subscription for good cause, in particular in the event of a material breach of these Terms.

4.4 Payment processing

Payments are processed by Stripe Payments Europe, Ltd. We do not store your full payment details. By subscribing, you authorise recurring charges to your selected payment method for the applicable fees until you cancel.

4.5 Failed payments

If a payment fails, we will attempt to charge your payment method again. If payment cannot be collected after the configured retry attempts (currently a total of two attempts within approximately 48 hours), the subscription is cancelled and your license key is deactivated automatically. Your inventory, connected accounts and settings are retained and become available again once a valid subscription is active.

4.6 Price changes

We may adjust prices for future billing periods. We will notify you of any price change at least 30 days before it takes effect. If you do not agree, you may cancel before the change becomes effective; continued use after the effective date constitutes acceptance.

4.7 Refunds

Except where mandatory law provides otherwise (in particular the statutory right of withdrawal set out in section 5), fees already paid are non-refundable, including for unused periods, partial billing periods, or periods during which you did not use the Service.

5. Right of Withdrawal (Consumers)

If you are a consumer within the meaning of section 13 of the German Civil Code (BGB), you have a statutory right of withdrawal.

Withdrawal instruction

You have the right to withdraw from this contract within fourteen days without giving any reason. The withdrawal period is fourteen days from the day of the conclusion of the contract.

To exercise your right of withdrawal, you must inform us (Centex Solutions, Luca Meier, Feldweiher 20, 91085 Weisendorf, Germany, privacy@calius.io) by means of a clear declaration (e.g. a letter sent by post or an email) of your decision to withdraw from this contract. You may use the model withdrawal form below, but it is not obligatory. To meet the withdrawal deadline, it is sufficient for you to send your communication concerning your exercise of the right of withdrawal before the withdrawal period has expired.

If you withdraw from this contract, we shall reimburse to you all payments received from you without undue delay and in any event not later than fourteen days from the day on which we are informed about your decision to withdraw. We will use the same means of payment as you used for the initial transaction, unless expressly agreed otherwise; in no event will you be charged any fees as a result of such reimbursement.

Premature expiry of the right of withdrawal

The right of withdrawal expires prematurely for a contract on the supply of digital content or digital services if you have expressly consented to us beginning performance before the end of the withdrawal period and you have confirmed your knowledge that you thereby lose your right of withdrawal. You give this consent and confirmation by ticking the corresponding checkbox during checkout. Because access to Calius is granted immediately after payment, your right of withdrawal expires at that moment.

Model withdrawal form

(If you wish to withdraw from the contract, please complete and return this form.)
To: Centex Solutions, Luca Meier, Feldweiher 20, 91085 Weisendorf, Germany, privacy@calius.io
I hereby give notice that I withdraw from my contract for the supply of the following service: _______
Ordered on: _______
Name of consumer: _______
Address of consumer: _______
Signature of consumer (only if this form is notified on paper): _______
Date: _______

6. License Keys, Devices and Plan Limits

6.1

Upon successful payment you receive a personal, non-exclusive, non-transferable license key for the duration of your active subscription. The key is bound to your user account and to the number of devices included in your plan (currently one desktop device, plus the number of mobile devices stated for your plan).

6.2

You may not share, resell, publish, sublicense or otherwise make your license key available to third parties. You may not circumvent, or attempt to circumvent, plan limits, device limits, usage quotas or technical protection measures. Violations entitle us to suspend or terminate your access without refund.

6.3

Plans include quantitative limits (such as the number of connected marketplace accounts, items, AI generations and devices). We may adjust the composition of plans, their limits and their features for future billing periods; section 4.6 applies accordingly to material reductions.

7. Third-Party Platforms and Account Risk

Please read this section carefully. Calius automates actions on marketplaces operated by independent third parties. Those platforms alone decide whether they permit such use. Using Calius may result in your marketplace accounts being restricted, suspended or permanently banned. This risk lies entirely with you.

7.1

By using the Service, you acknowledge and accept that:

The use of third-party automation tools may violate the terms of service, policies, or community guidelines of those platforms, even if the Service is used as intended.
Calius bears no responsibility for any action taken by a third-party platform against your account, including but not limited to: account suspension, permanent bans, listing removals, withheld or reversed payouts, strikes, restrictions, shadow bans, loss of seller status or ratings, or legal action.
You use the Service entirely at your own risk with respect to your accounts on any third-party platform. You are responsible for all activity conducted through your credentials and devices.

7.2

It is your sole responsibility to ensure that your use of Calius complies with the terms of service, policies and applicable laws of every platform you connect to the Service, and to decide which features and automation settings you activate. We do not review your conduct on third-party platforms for compliance and we do not advise on whether a particular use is permitted by a particular platform.

7.3 No refunds for platform actions

A restriction, suspension or ban of one or more of your marketplace accounts does not constitute a defect of the Service and does not entitle you to a refund, a reduction of fees, an extraordinary right of termination, damages, or any other compensation. Your subscription and payment obligations continue unaffected. You remain free to cancel in accordance with section 4.3.

7.4 Changes by third parties

Third-party platforms may change, restrict or discontinue their interfaces at any time and without notice. Integrations may therefore become temporarily or permanently unavailable, degraded or delayed. Such changes are outside our control and, to the extent permitted by law, do not constitute a defect of the Service.

8. Acceptable Use

You agree not to use the Service to:

Sell counterfeit, stolen, illegal or otherwise prohibited goods
Deceive buyers, misrepresent items, or engage in fraudulent activity
Infringe intellectual property, personality or data protection rights of others
Access, scrape, disrupt or overload our infrastructure or third-party platforms beyond the intended use of the Service
Reverse engineer, decompile or resell the Service, except where permitted by law

We may suspend or terminate access without notice and without refund in the event of serious or repeated violations of this section.

9. Invoices and Financial Data

9.1

Any invoices, sales summaries, revenue figures, exports or financial data generated or displayed by Calius are provided for informational purposes only. They do not constitute tax, legal, or accounting advice.

9.2

Calius does not guarantee the accuracy, completeness, timeliness, or legal compliance of any generated invoices, exports, or financial reports. Generated documents may not meet the legal or formal requirements of your jurisdiction, industry, or tax regime.

9.3

You are solely responsible for:

Verifying the accuracy of all financial data before any use or filing
Ensuring invoices and records comply with applicable tax laws and regulations
Filing taxes and reporting income correctly
Retaining records as required by law

9.4

To the fullest extent permitted by law, Calius shall not be held liable for any financial loss, tax penalties, audits, disputes with buyers or platforms, or legal consequences arising from the use of, or reliance on, generated invoices or financial data.

10. Availability, Changes and Data

We continuously develop the Service and may add, change or remove features. We aim for high availability but do not warrant uninterrupted operation; maintenance, updates, third-party outages and force majeure may cause downtime. You are responsible for keeping your own backups of data that is important to you. Upon termination of your subscription, we may retain your data for a reasonable period and delete it thereafter in accordance with our Privacy Policy and statutory retention obligations.

11. Disclaimer of Warranties

To the extent permitted by law, the Service is provided "as is" and "as available" without warranties of any kind, whether express, implied, or statutory, including but not limited to:

Warranties of merchantability, satisfactory quality, or fitness for a particular purpose
Uninterrupted, timely, secure, or error-free operation
Accuracy or reliability of any data, sync, or listing outcome
That the Service will meet your requirements or integrate without interruption
That defects will be corrected

Statutory warranty rights of consumers remain unaffected. Some jurisdictions do not allow certain warranty exclusions; in those jurisdictions, our warranties are limited to the minimum extent required by law.

12. Limitation of Liability

To the maximum extent permitted by applicable law, Calius and its operators, owners, affiliates, and contributors shall not be liable for any:

Indirect, incidental, special, consequential, or punitive damages
Loss of profits, revenue, goodwill, data, or business opportunities
Account bans, restrictions or payout losses imposed by third-party platforms
Errors or inaccuracies in generated invoices or financial data
Service interruptions, data loss, security incidents, or unauthorized access not caused by our intent or gross negligence
Damages arising from your reliance on the Service or from third-party conduct

In no event shall Calius's aggregate total liability for all claims arising out of or related to the Service exceed the greater of (a) the amount you paid to Calius for the Service in the three (3) months preceding the event giving rise to the claim, or (b) zero if you have not paid any fees during that period.

Nothing in these Terms excludes or limits liability where such exclusion or limitation is prohibited by law, including liability for intent (Vorsatz), gross negligence (grobe Fahrlässigkeit), injury to life, body, or health, under mandatory product liability rules, or for breach of material contractual obligations (where applicable law limits the extent of such limitation to typical foreseeable damage).

13. Indemnification

To the extent permitted by law, you agree to indemnify, defend, and hold harmless Calius and its operators from any claims, damages, losses, liabilities, and expenses (including reasonable legal fees) arising out of or related to:

Your use of the Service or your data and content
Your violation of these Terms or applicable law
Your violation of any third-party platform's terms, policies, or guidelines
Any dispute between you and a third-party platform, buyer, or authority
Any action taken against your accounts by third-party platforms

14. Changes to Terms

We may modify these Terms at any time. We will notify you of material changes at least 30 days before they take effect (for example via the Service, email, or dashboard notice). If you do not agree, you may cancel your subscription before the changes take effect. Continued use of the Service after changes become effective constitutes acceptance of the updated Terms, except where prohibited by mandatory law.

15. Governing Law, Venue and Dispute Resolution

These Terms are governed by the laws of the Federal Republic of Germany, excluding its conflict-of-law rules and the UN Convention on Contracts for the International Sale of Goods. If you are a consumer habitually resident in the European Economic Area or the United Kingdom, nothing in these Terms affects mandatory consumer protection rules that apply to you and cannot be waived by contract.

Subject to mandatory law, exclusive jurisdiction for all disputes arising from or in connection with these Terms shall lie with the courts of Germany. If you qualify as a consumer, you may also bring proceedings in the courts of your place of residence where such rights are granted to you by mandatory law.

We are neither obliged nor willing to participate in dispute resolution proceedings before a consumer arbitration board (Verbraucherschlichtungsstelle).

16. Severability

If any provision of these Terms is held invalid, illegal, or unenforceable, the remaining provisions remain in full force and effect. The invalid provision shall be replaced by a valid provision that comes closest to the economic intent of the original, where permitted by law.

17. Entire Agreement

These Terms constitute the entire agreement between you and Calius regarding the Service and supersede prior understandings on the same subject matter, except where we explicitly reference separate policies (for example privacy or acceptable use) that are incorporated by reference.

18. No Waiver

Our failure to enforce any right or provision of these Terms does not waive that right or provision. Any waiver must be in writing and signed by us to be effective.

19. Assignment

You may not assign or transfer these Terms or your rights under them without our prior written consent. We may assign these Terms in connection with a merger, acquisition, corporate reorganization, or sale of assets, provided your rights are not materially reduced without required notice where mandated by law.