Last updated: 19 May 2026 · Effective: 19 May 2026
These Terms of Service (the "Terms") form a binding agreement between Chatzisavva Ltd, a company registered in England and Wales under company number 15589694, trading as Medusa ("Medusa", "we", "us", "our"), and you, the person or organisation registering for or using the Service ("Customer", "you", "your").
By creating an account, starting a trial, subscribing to a paid plan, ticking an acceptance box at sign-up, or otherwise accessing or using the Service, you confirm that you have read, understood and agreed to be bound by these Terms. If you do not agree, you must not access or use the Service.
You may only use the Service if you are at least 18 years old and have the legal capacity to enter into binding contracts. If you register on behalf of a company, agency or other entity, you confirm that you have authority to bind that entity to these Terms, and references to "you" include that entity. We may refuse, suspend or terminate any Account at our discretion where eligibility is in doubt or where these Terms are breached.
Medusa is an AI-driven media planning workspace. The Service includes brief parsing, AI-generated audience personas, channel recommendations, budget allocation suggestions, flighting and tactics, live pacing against plan, cross-channel analytics, ML-driven recommendations, and integrations with Connected Platforms. Available features depend on your Subscription tier and may change in line with section 15.
You must provide accurate, current and complete information when registering and keep your Account details up to date. You are responsible for all activity that occurs under your Account and for safeguarding your credentials, including using multi-factor authentication where offered. You must notify us promptly of any suspected unauthorised access. Each free trial is limited to one per organisation, and we may close additional or duplicate trial Accounts.
5.1 Plans and fees.
Subscription fees, included features and seat limits are set out on our pricing page at the time you subscribe. Prices are in US dollars and exclusive of any applicable VAT, GST, sales tax or similar indirect taxes, which will be added where required by law.
5.2 Free trial.
Where a free trial is offered, it is limited to seven (7) days for the Starter plan and requires a valid payment method at sign-up. Unless you cancel before the trial ends, your Subscription will automatically convert to a paid plan and you will be charged the then-current fee.
5.3 Payment processor.
All payments are processed by Stripe. By providing payment details, you authorise us, acting through Stripe, to charge the applicable Subscription fees, taxes and any other agreed amounts to your nominated payment method. You agree to Stripe's payer terms in addition to these Terms.
5.4 Auto-renewal.
Subscriptions renew automatically at the end of each billing cycle (monthly or yearly, as selected) at the then-current rate, until cancelled in accordance with these Terms. You authorise recurring charges to your payment method on each renewal date.
5.5 Price changes.
We may change Subscription fees from time to time. Any change will take effect at your next renewal and we will give you at least thirty (30) days' notice by email or in-app. If you do not accept the change, you may cancel before it takes effect.
5.6 Cancellation by you.
You may cancel your Subscription at any time from within the Service or by contacting support. Cancellation takes effect at the end of your current billing cycle. You will retain access until then. Except where required by mandatory local consumer law, fees already paid are non-refundable and we will not refund partial billing periods.
5.7 Taxes.
You are responsible for all taxes, duties and withholdings arising from your use of the Service, other than taxes on our income.
6.1 Failed charges.
If a scheduled charge fails (for example, due to expired, declined or insufficient-funds payment methods), we will attempt to retry the charge and notify you by email.
6.2 Suspension.
If the failed amount remains unpaid for more than fourteen (14) days from the original charge date, or after three (3) unsuccessful retry attempts (whichever is earlier), we may suspend your Account and access to paid features without further notice.
6.3 Cancellation for non-payment.
If the failed amount remains unpaid for more than thirty (30) days, we may cancel your Subscription. Cancellation under this section is at our discretion and is in addition to any other rights we have.
6.4 Outstanding fees.
Suspension or cancellation for non-payment does not release you from any unpaid fees already due. We may recover unpaid amounts, together with reasonable collection costs and interest at the rate permitted by applicable law, including through third-party collection agencies.
6.5 Reinstatement.
A suspended or cancelled Account may be reinstated at our discretion once outstanding amounts are paid in full, subject to any updated pricing or terms then in force.
7.1 What the Service does.
The Service uses large language models, machine-learning models and statistical methods to produce Outputs including personas, plans, channel mixes, budget allocations, pacing forecasts and recommendations.
7.2 Indicative only.
All Outputs are indicative, probabilistic and best-effort. Figures, benchmarks, projections and recommendations are produced to the best of our models' ability based on available inputs and reference data, but they are not guarantees, predictions or commitments of any kind. Mistakes, omissions, fabrications ("hallucinations"), out-of-date benchmarks, mis-citations and other errors can and do occur in AI-generated content.
7.3 Not professional advice.
Outputs do not constitute financial, legal, regulatory, marketing, tax or other professional advice. Performance figures such as predicted reach, CPM, CPC, conversions, ROAS and budget reallocations are illustrative and do not guarantee any commercial outcome.
7.4 Your responsibility to verify.
You are solely responsible for reviewing, verifying, validating and approving every Output before relying on it, presenting it to a client, or putting it into market. You must apply professional judgement, cross-check material figures against primary sources, and treat AI-generated citations and benchmarks as starting points rather than facts. The Service is a planning aid; it does not replace human review.
7.5 No outcome warranty.
We make no warranty that any campaign, plan, persona, allocation or recommendation produced through the Service will achieve any specific performance level, ROAS, conversion rate, audience match or other result.
7.6 Assumption of risk.
To the maximum extent permitted by law, you assume all risk of relying on Outputs and you waive any claim against us arising from inaccuracies, errors, omissions or hallucinations in Outputs, except where liability cannot be excluded by mandatory law.
8.1 RAG architecture.
The Service uses a Retrieval-Augmented Generation ("RAG") architecture. This means certain Customer Data, reference content and contextual material is processed by embedding models and stored as numerical vectors in a vector database to allow the Service to retrieve relevant context when generating Outputs.
8.2 Anonymisation before vector storage.
Before Customer Data is written to the vector index, it is anonymised. This includes stripping or hashing identifiers such as account IDs, client names, campaign names, contact details and other Personal Data, so that vectors stored for retrieval cannot, on their own, be used to identify a specific individual or client. Where full anonymisation is not technically possible for a particular field, that field is excluded from the vector index.
8.3 Use of vectors.
Anonymised vectors are used to improve retrieval relevance and recommendation quality within the Service. Anonymised, aggregated patterns derived from vectors may be used to improve the Service generally, including benchmarks and model performance.
8.4 No training on identifiable Customer Data.
We do not use raw, identifiable Customer Data to train, fine-tune or retrain foundation models, and we do not share raw Customer Data across Customer Accounts.
8.5 Deletion of vector entries.
You may request deletion of vector entries associated with your Account at any time by contacting support. Deletion will take effect within a reasonable period and is subject to technical retention windows in backups, as described in our Privacy Policy.
8.6 Third-party AI model providers.
Some Outputs are generated using AI models hosted by third-party model providers. We select providers that contractually agree not to use Customer prompts or Outputs to train their models, and we transmit anonymised or minimised data where feasible. A current list of model sub-processors is available on request.
9.1 Ownership.
As between you and us, you retain all rights, title and interest in your Customer Data. You grant us a worldwide, non-exclusive, royalty-free licence to host, copy, transmit, process, display, anonymise and otherwise use Customer Data solely as needed to provide and improve the Service in line with these Terms and our Privacy Policy.
9.2 Connected Platforms.
When you connect a third-party advertising or data platform via OAuth, you authorise us to access, retrieve and use data from that platform on your behalf, strictly for the purpose of providing the Service. You are responsible for keeping your connections, scopes and platform credentials current and for complying with the relevant platform's terms.
9.3 Lawful basis.
You confirm that you have all necessary rights, consents and lawful bases to upload Customer Data and to authorise our processing of it, including any Personal Data contained within it.
9.4 Outputs.
Subject to your payment of fees, you may use Outputs for your internal business purposes and, in the case of agencies, for your clients' campaigns. We do not claim ownership of Outputs you generate, but you acknowledge that similar or identical Outputs may be generated for other Customers and we retain ownership of the underlying models, prompts and Service.
10.1 Hosting location.
Primary data hosting and database storage for the Service is located in Germany (European Union). Where data is transferred outside the EU or UK for processing by sub-processors (for example, AI model providers), we apply appropriate safeguards including Standard Contractual Clauses or the UK International Data Transfer Addendum as required.
10.2 Security.
We apply reasonable and appropriate technical and organisational measures to protect Customer Data, including encryption in transit (TLS) and encryption at rest (AES-256), access controls, secret management, audit logging and regular review. No system is perfectly secure, and we do not warrant that the Service will be uninterrupted, error-free or immune from breach.
10.3 Data processing roles.
Where Customer Data includes Personal Data, you act as Controller and we act as Processor under the UK GDPR and EU GDPR. A Data Processing Addendum compliant with Article 28 GDPR is available on request and will form part of these Terms when executed.
10.4 Sub-processors.
We use sub-processors to deliver the Service, including Stripe (payments), our hosting and database providers, the vector database provider, AI model providers, email delivery services and customer support tooling. A current list is available on request. We will give reasonable notice of new sub-processors where required by the Data Processing Addendum.
10.5 Breach notification.
We will notify you of any confirmed Personal Data breach affecting your data without undue delay, in line with applicable law.
You must not, and must not permit any user or third party to:
We may suspend or terminate your access for any breach of this section, with or without notice depending on severity.
We and our licensors own all rights, title and interest in the Service, including the software, models, training data we own or license, brand, logos, documentation, user interfaces and the look and feel. Nothing in these Terms transfers any of those rights to you. You may submit feedback, suggestions, ideas or bug reports ("Feedback"), and you grant us a perpetual, irrevocable, royalty-free, worldwide licence to use Feedback for any purpose without obligation to you.
Each party may receive non-public information of the other ("Confidential Information"). The receiving party must use the same degree of care to protect Confidential Information as it uses for its own (and no less than reasonable care), use it only to perform under these Terms, and disclose it only to personnel or sub-processors who need it and are bound by similar confidentiality obligations. Confidential Information does not include information that is public, independently developed, lawfully received from a third party, or required to be disclosed by law (with reasonable notice where permitted).
The Service integrates with Connected Platforms and other third-party services. We do not control those services and are not responsible for their performance, accuracy, availability, content, data quality, pricing, terms or actions. Your use of a Connected Platform is governed by its own terms, and you are responsible for complying with them. Any data we retrieve from a Connected Platform may be incomplete or delayed, and Outputs that depend on it will be affected accordingly.
We will use reasonable efforts to keep the Service available but do not commit to any specific uptime unless agreed separately in writing (for example, in an Enterprise order form). We may modify, add or remove features at any time. For material changes that materially reduce core functionality of a paid feature you actively use, we will give reasonable notice. Scheduled maintenance will be communicated where practicable. The Service may be unavailable due to factors outside our control, including Connected Platform outages.
To the maximum extent permitted by law, the Service and all Outputs are provided "as is" and "as available", without warranty of any kind, whether express, implied or statutory, including warranties of merchantability, fitness for a particular purpose, non-infringement, accuracy, reliability, completeness, error-free or uninterrupted operation, or that the Service will meet your requirements. We disclaim any warranty that AI Outputs will be accurate, complete, current, suitable or fit for any particular use. Nothing in this section excludes any warranty or right that cannot be excluded under mandatory applicable law.
17.1 Excluded losses.
To the maximum extent permitted by law, neither party is liable to the other for any indirect, special, incidental, consequential, punitive or exemplary damages, or for loss of profits, revenue, business, goodwill, anticipated savings, data or use, in each case whether arising in contract, tort (including negligence), breach of statutory duty or otherwise, even if advised of the possibility of such damages.
17.2 Aggregate cap.
To the maximum extent permitted by law, our total aggregate liability arising out of or in connection with these Terms or the Service, in any twelve (12) month period, is limited to the total Subscription fees you actually paid to us in the twelve (12) months immediately preceding the event giving rise to liability.
17.3 AI reliance.
Without limiting section 17.1 or 17.2, we are not liable for any loss, claim, damage or expense arising from your reliance on, decisions made on the basis of, or actions taken in response to any Output, where you have not independently verified that Output. You acknowledge that media planning involves judgement and that responsibility for final plans, allocations and decisions sits with you.
17.4 Non-excludable liability.
Nothing in these Terms excludes or limits liability that cannot be excluded or limited under applicable law, including liability for death or personal injury caused by negligence, fraud, fraudulent misrepresentation, or any other liability that cannot lawfully be limited. Where mandatory consumer protection law applies, your statutory rights are not affected.
17.5 Allocation of risk.
You acknowledge that the fees we charge reflect the allocation of risk set out in this section and that, without these limits, the fees would be materially higher.
You agree to defend, indemnify and hold harmless Medusa, its affiliates and their officers, directors, employees and agents from and against any third-party claim, loss, damage, liability, cost or expense (including reasonable legal fees) arising out of or related to: (a) your Customer Data; (b) your use of the Service or any Output, including any campaign, plan or decision made in reliance on an Output; (c) your breach of these Terms; (d) your violation of any law or third-party right, including any Connected Platform's terms; or (e) any claim that content you uploaded, generated or published infringes the rights of a third party.
19.1 Term.
These Terms apply from the date you first access the Service and continue while your Account is active.
19.2 Termination for convenience.
You may terminate by cancelling your Subscription as set out in section 5.6 and closing your Account.
19.3 Termination for cause.
Either party may terminate immediately on written notice if the other party materially breaches these Terms and fails to cure the breach within thirty (30) days of written notice, or commits a breach that is not capable of cure.
19.4 Termination by us.
We may suspend or terminate your Account immediately if you breach section 11 (Acceptable Use), section 6 (Payment Failure), or if we reasonably believe continued provision of the Service to you would expose us or our other Customers to legal, regulatory or security risk.
19.5 Effect.
On termination, your right to access the Service ends. We will make Customer Data available for export for thirty (30) days where reasonably practicable, after which it will be deleted from active systems. Backups containing residual Customer Data will be overwritten in line with our standard retention cycles. Sections that by their nature should survive (including 7, 8, 10, 12, 13, 16, 17, 18, 21 and 23) survive termination.
We may update these Terms from time to time. For material changes, we will give at least thirty (30) days' notice by email or in-app before they take effect. For non-material changes, we will post the updated Terms with a new "Last updated" date. Your continued use of the Service after the effective date of any change constitutes acceptance. If you do not accept a material change, you may cancel your Subscription before the change takes effect.
21.1 Governing law.
These Terms and any dispute or claim arising out of or in connection with them (including non-contractual disputes or claims) are governed by the laws of England and Wales.
21.2 Jurisdiction.
Subject to section 22, the courts of England and Wales have exclusive jurisdiction to settle any dispute. This does not deprive consumers of the protection of mandatory provisions of the law of their habitual residence.
21.3 Informal resolution.
Before commencing formal proceedings, the parties will use reasonable efforts to resolve disputes by good-faith discussion within thirty (30) days of written notice.
The following provisions apply where you are habitually resident in or your Account is registered in the relevant region. Where they conflict with other parts of these Terms, the region-specific provisions prevail to the minimum extent required.
22.1 United Kingdom consumers.
Nothing in these Terms limits your rights under the Consumer Rights Act 2015 or other mandatory UK consumer protection law.
22.2 European Economic Area consumers.
Nothing in these Terms limits your non-excludable rights under EU consumer protection law, including the right to lodge a complaint with your local data protection authority. EEA consumers may withdraw from a paid Subscription within fourteen (14) days of purchase under the Consumer Rights Directive, except where digital content or services have been supplied with your prior express consent and acknowledgement that the right of withdrawal is lost on commencement, which you provide by accessing the Service during that period.
22.3 California, United States.
California residents acknowledge the Service is offered on an auto-renewing basis. You may cancel at any time by following the cancellation steps in section 5.6. California Civil Code section 1789.3 entitles California consumers to contact the California Department of Consumer Affairs Complaint Assistance Unit. To the extent the California Consumer Privacy Act applies, the rights and disclosures in our Privacy Policy apply.
22.4 Other United States residents.
Any dispute resolution and class-action provisions in these Terms apply only to the extent enforceable under applicable US federal and state law.
22.5 Australia.
Nothing in these Terms excludes, restricts or modifies any consumer guarantee, right or remedy under the Australian Consumer Law that cannot lawfully be excluded.
22.6 Gulf Cooperation Council (UAE, KSA, Qatar, Kuwait, Bahrain, Oman).
We comply with applicable local law in your jurisdiction. Nothing in these Terms excludes mandatory consumer or data protection rights you have under local law, including the UAE PDPL, KSA PDPL or equivalent.
22.7 Other jurisdictions.
Where mandatory local law applies to your use of the Service, those provisions prevail over conflicting provisions of these Terms to the minimum extent required.
23.1 Entire agreement.
These Terms, together with any order form, Data Processing Addendum and our Privacy Policy and AI Disclaimer (incorporated by reference), constitute the entire agreement between the parties on the subject matter and supersede all prior agreements.
23.2 Severability.
If any provision is held unenforceable, the remaining provisions remain in full force.
23.3 No waiver.
Failure to enforce any provision is not a waiver of the right to enforce it later.
23.4 Assignment.
You may not assign or transfer these Terms without our prior written consent. We may assign these Terms to an affiliate or in connection with a merger, acquisition or sale of assets.
23.5 Force majeure.
Neither party is liable for delay or failure caused by events beyond its reasonable control, including internet outages, infrastructure failures, acts of government, war, terrorism, civil unrest, pandemics or natural disasters.
23.6 Notices.
Notices to us must be sent to legal@getmedusa.ai. Notices to you may be sent to the email address on your Account or posted in-app.
23.7 Relationship.
The parties are independent contractors. Nothing creates an agency, partnership, joint venture or employment relationship.
23.8 Third-party rights.
No person other than the parties has any right to enforce these Terms under the Contracts (Rights of Third Parties) Act 1999 or equivalent.
23.9 Language.
These Terms are concluded in English. Any translation is for convenience only and the English version prevails.
Chatzisavva Ltd (trading as Medusa) — Company number: 15589694 (England and Wales)
By clicking "I agree" or by continuing to use the Service, you confirm that you have read, understood and agreed to these Terms.