Terms of Service

1. Scope and parties

These terms apply between Ole Nepomuk Mai, 10625 Berlin, Germany (“we”, “us”) and you, for the website at mcpthesaurus.com and the services offered on it. Full provider details are in the Imprint.

They apply in the version in force when you use the service or place an order. Terms of your own that conflict with or add to these do not become part of the agreement unless we have agreed to them in writing; unconditional performance on our part is not such agreement.

Consumers and businesses. A consumer under § 13 BGB is anyone acting for purposes outside their trade, business or profession. An entrepreneur under § 14 BGB acts within one. Some clauses below apply only to one group; where that is the case it is stated in the clause.

2. What the service is

MCP Thesaurus is a directory of Model Context Protocol servers, remote servers, agent skills and loops. Entries are compiled from public sources, from official registries and from submissions, and are enriched with editorial description and a published score.

It is an independent project. It is not affiliated with, endorsed by or sponsored by Anthropic PBC or by any listed project, and nothing here is an official statement about the Model Context Protocol.

What we do not do. We do not distribute, host, execute or audit the software described. A listing is a description, not a recommendation, a warranty, or a security assessment. We do not provide support for third-party software, and we are not party to any relationship between you and a project’s authors.

Reading the directory requires no registration and is free. We may add, change or discontinue features; where a change materially reduces a paid service you have already bought, section 15 applies.

3. Accounts

An account is needed to submit, to claim, and to buy. Registration is free and creates no obligation to buy anything. There is no entitlement to an account; we may decline to open one, and we may close one under section 14.

• Give accurate details and keep the email address current — it is how we reach you about a submission, a claim or an order.
• An account is personal to you. Do not share access, and tell us promptly at hello@mcpthesaurus.com if you think someone else has it.
• You are responsible for what happens under your account, unless you are not at fault for the misuse.
• You must be at least 16 years old, or have the consent of a parent or guardian.

You can close your account at any time by writing to us. What happens to data at that point is set out in the Privacy Policy.

4. Submissions and your content

You can submit a project for inclusion, and claim an existing entry if you control the project. Submitting is an invitation for us to review, not a right to be listed: there is no entitlement to publication, and a paid submission buys review priority and editorial time, never a guaranteed outcome.

What you promise when you submit

• The information is accurate to the best of your knowledge, and you are entitled to submit it.
• The content does not infringe anyone’s rights and does not break any law.
• The project is not malware, and does not exist to exfiltrate data or deceive the people who install it.
• A claim is made only for a project you actually control, and only through a verification method you are entitled to use.

Licence you grant us

For material you submit — descriptions, logos, screenshots, sponsor creative — you grant us a non-exclusive, worldwide, royalty-free right to store, reproduce, edit for length and clarity, translate, and publish it on this site and in the machine-readable files that mirror it, for as long as the entry is published. You keep ownership. This licence exists so that we can display and translate what you sent us; it goes no further.

What we may do editorially

We may edit, categorise, translate, decline, unpublish or remove entries at our reasonable discretion — in particular where an entry is inaccurate, abandoned, duplicated, misleading, unlawful, or dangerous to the people who would install it. Where we remove content you supplied, section 12 explains what you are told and how to contest it.

5. Ranking, scoring and badges

This section is a commitment, not a description, and we would rather it be enforceable against us than merely stated on a marketing page.

• Payment does not affect ranking. The ranking function contains no sponsorship term and the score contains no sponsorship criterion. Sponsored placements occupy their own labelled slots outside every organic list.
• Provenance badges are not for sale. “Official” means the publisher owns the namespace in the official MCP registry; “Claimed” means someone proved they control the project, which is free to do and which a paying customer must still do themselves. Neither can be bought at any price.
• Paid labels are always disclosed. “Sponsored” and “Featured” are marked as such wherever they appear, as required by § 5a(4) UWG and Art. 26(1) DSA.
• Sponsor links carry rel="sponsored". We do not sell follow links. Listing link attributes follow provenance, not payment.
• The score is published. The rubric is on the scoring page, and a score is a judgement about software from public signals — informational, not a warranty of quality or security.

6. Paid placements

Formation and delivery

Presenting a package on the Advertise page is an invitation to treat, not a binding offer. The contract is formed when Digistore24 accepts your order. We are notified of a confirmed payment directly by Digistore24; a confirmation page you reach in your browser grants nothing on its own.

• Premium submission — a one-off purchase of queue priority and editorial time. It does not buy publication, a badge, a follow link, or a place in the rankings. If we decline to publish, you get the fee back.
• Category and network sponsorship — a recurring purchase of a labelled slot for the paid period. One sponsor per category. Runs from the start of the period and ends when it expires or when you cancel.
• Featured placement — a labelled slot for the stated period.

Sponsor material

You supply the creative and warrant that you may use it. We may decline or require changes to material that is unlawful, misleading, defamatory, or incompatible with the tone of a technical reference; we will say why, and you can supply a replacement. We may pause a placement for as long as the material is in breach.

Cancellation and what is not promised

Recurring placements can be cancelled at any time through the billing portal, with effect at the end of the paid period. The slot stays live until then.

We do not promise a number of impressions, clicks, visitors, conversions, or any search ranking outcome. Sponsors get live impression and click reporting instead, and traffic figures are what they are. Nothing about a paid placement changes section 5.

7. Right of withdrawal

Entrepreneurs under § 14 BGB have no statutory right of withdrawal, and none is granted here.

8. API, data and machine-readable files

Part of the point of this project is that machines can read it. The JSON API, the per-entry .md and .json twins, llms.txt and llms-full.txt are there to be used, including by AI systems and their crawlers.

Licence

The factual directory data — names, URLs, categories, transports, licences, versions, counts and the like — is available under the Creative Commons Attribution 4.0 International licence. Use it, redistribute it, build on it; credit MCP Thesaurus and link back.

Our editorial content — the explanatory articles, the scoring rubric text, page copy, design and code — is not covered by that licence and remains protected under section 11. Third-party material inside an entry, such as a README excerpt or a logo, stays under whatever licence its author gave it.

Fair use of the API

• Keep request volume reasonable, honour rate limits and caching headers, and send a user agent that identifies you.
• Do not use the API or the site to build a substantially identical competing directory that passes our editorial work off as its own.
• Do not circumvent technical limits, and do not scrape in a way that degrades the service for others.
• The API may change or be withdrawn. Breaking changes to documented endpoints are announced in the changelog in advance where practicable.

We may throttle or block a client that ignores this, and we may require a paid arrangement for very high volume use.

9. Acceptable use

Do not use this site to:

• break the law, or infringe anyone’s rights;
• submit malware, or a project whose purpose is to deceive or compromise the people who install it;
• claim a listing you do not control, impersonate a maintainer, or misrepresent an affiliation;
• manipulate scores, rankings, counters or reviews, including through automated or coordinated submissions;
• attack the service — probing for vulnerabilities without permission, overloading it, bypassing authentication or rate limits;
• harvest personal data from the site for unsolicited contact, or feed it into a contact list;
• post abusive, harassing, defamatory or discriminatory content.

Good-faith security research is welcome. Report what you find to hello@mcpthesaurus.com before disclosing it, and do not access or alter other people’s data. We will not pursue anyone who works that way.

10. Third-party software and links

Nearly every entry links to software written by someone else, and to repositories, registries and websites we do not control. We check what is reasonable at the time of listing and cannot monitor it continuously.

Judge for yourself before you install anything. An MCP server runs with whatever access you give it, and a listing here is not a security audit. Read our note on server security, read the source, and decide. Your use of third-party software is governed by that project’s own licence and terms, between you and its authors.

11. Intellectual property

The site’s design, code, editorial text, structure and compilation are protected by copyright and database rights and belong to us or to our licensors. Beyond what section 8 permits, you may not copy, adapt or redistribute them without permission.

Badges. If your listing earns a badge, you may display the badge we provide on your project’s own pages, unmodified, linking back to your listing, for as long as it remains accurate. That permission ends if the badge stops being accurate or if we withdraw it.

Other people’s marks. Product names, logos and trademarks shown here belong to their owners and are used for identification only. If you own a mark and object to how it appears, write to notice@mcpthesaurus.com — see section 12.

12. Notice and action

Because we publish material supplied by users, we are a hosting service under the Digital Services Act (Regulation (EU) 2022/2065). This is how to report something, and what happens next.

Reporting content

Send a notice to notice@mcpthesaurus.com. Article 16 DSA asks for enough to act on, so please include:

• a reasoned explanation of why the content is unlawful;
• the exact URL, or URLs, of the content;
• your name and email address — you may omit these for reports concerning certain offences against a person;
• a statement that you believe in good faith that the information in the notice is accurate and complete.

We confirm receipt without undue delay, decide in a timely, diligent, non-arbitrary and objective manner, and tell you the outcome and how to contest it. A complete notice about clearly unlawful content may put us on notice for the purposes of Art. 6 DSA, which is why we act on it quickly.

If we act against your content

Where we remove, disable, demote or restrict something you submitted, we give you a statement of reasons under Art. 17 DSA: what was done, on what grounds — our terms or the law — whether automated means were involved, and how to challenge it. Reply to that message and a person will re-examine the decision. Your right to go to court, or to an out-of-court dispute settlement body certified under Art. 21 DSA, is unaffected.

Misuse

We may suspend handling of notices from someone who repeatedly files manifestly unfounded ones, and suspend an account that repeatedly posts manifestly illegal content, after a warning (Art. 23 DSA).

13. Availability and liability

Availability

We aim for a service that is continuously available, but we do not owe you a particular uptime. Maintenance, faults, attacks and problems at our providers can interrupt it. No availability guarantee is given for the free service. For paid placements, we credit the unused portion of a period in which a slot was unavailable for a prolonged time through our fault.

Accuracy

Directory content is compiled from public sources and from submissions, and it can be incomplete, out of date or wrong. We take reasonable care, and we correct errors when we learn of them, but we give no warranty that any entry is accurate, current or fit for your purpose. Decisions about what to install remain yours.

Liability

The following limits reflect what German law permits and no more. They apply to us, our staff and anyone we engage.

• Unlimited liability for intent and gross negligence; for injury to life, body or health; under the Product Liability Act (Produkthaftungsgesetz); to the extent of any guarantee we have expressly given; and wherever else liability is mandatory by law.
• Slight negligence: we are liable only for breach of a material contractual obligation — an obligation whose fulfilment makes performing the contract possible at all and on whose observance you may regularly rely (a cardinal obligation). In that case liability is limited to the foreseeable damage typical of this kind of contract.
• Otherwise excluded. Any further liability for slight negligence is excluded, in particular for indirect damage, lost profit and lost data — although we remain liable for the cost of restoring data that would have been recoverable from backups kept with reasonable care.
• Third-party software. We are not liable for damage arising from software described here that we neither wrote nor distribute, beyond our own fault in describing it.

Nothing here shifts the burden of proof to your disadvantage, and nothing here limits a consumer’s statutory rights.

14. Term and termination

Using the site freely creates no fixed term; you can stop, and delete your account, at any time. Recurring paid placements run for the period bought and renew until cancelled, as set out in section 6 and in Digistore24’s terms.

We may suspend or close an account for a serious or repeated breach of these terms — in particular section 9 — normally after a warning, and immediately where a warning would be pointless or where the law requires it. A paid placement terminated for your breach is not refunded for the remainder of the period; one we terminate without cause is refunded pro rata.

The right of either side to terminate for good cause without notice (§ 314 BGB) is unaffected.

15. Changes to these terms

We may change these terms where there is a valid reason — a change in the law or in case law, a new or altered feature, a new payment or hosting arrangement, or to close a loophole. Changes are never used to alter the core of what you bought without your agreement.

For an ongoing paid relationship, we tell you the proposed text by email at least 30 days before it takes effect. You may object in text form before that date; if you do, we may terminate the arrangement at the end of the current paid period, and unused fees are refunded pro rata. The notice will say so, and will point out what your silence means. For everyone else, the version published here when you use the service is the one that applies.

16. Governing law and jurisdiction

German law applies, excluding the UN Convention on Contracts for the International Sale of Goods.

Consumers: that choice of law does not deprive you of the protection of the mandatory provisions of the law of the country where you habitually reside (Art. 6(2) of Regulation (EC) No 593/2008, Rome I). You may sue, and may be sued, in the courts of that country.

Entrepreneurs, legal persons under public law and special funds under public law: the place of jurisdiction for all disputes arising from this relationship is our registered seat, and the same applies if you have no general place of jurisdiction in Germany or move your residence abroad after the contract is concluded. We may also sue at your seat.

As stated in the Imprint, we do not take part in dispute resolution proceedings before a consumer arbitration board (§ 36 VSBG).

17. Final provisions

If a provision of these terms is or becomes invalid, the validity of the rest is unaffected; the statutory provisions take the place of the invalid one (§ 306(2) BGB).

Amendments and side agreements must be in text form. That requirement itself can only be waived in text form.

We may transfer this agreement to a legal successor if the business is transferred, provided the transfer does not disadvantage you; you will be told, and may terminate at that point.

Questions about any of this: hello@mcpthesaurus.com.