# Terms of Service

_Last updated: May 10, 2026_

These Terms of Service ("**Terms**") form a legal agreement between you
("you" or "Customer") and **Retrograde Labs** ("**Retrograde Labs**,"
"we," "us," or "our"), governing your access to and use of **Lune**
(the "**Service**"), including:

- the **Lune dashboard** at [luneresearch.com](https://luneresearch.com),
- **Lune custom connectors and AI-application apps**, including
  custom connectors / apps that allow you to use Lune from inside
  third-party AI applications such as ChatGPT, Claude, Cursor, VS Code,
  Codex, OpenCode, Perplexity, Manus, Hermes, and other AI applications
  that support custom connectors or Model Context Protocol (MCP)
  integrations, and
- the **Lune command-line application** distributed under the npm
  package `@retrograde-labs/lune-cli`.

By creating an account, accessing the Service, or clicking "I agree,"
you agree to these Terms. If you are using the Service on behalf of an
organization, you represent that you have authority to bind that
organization, and "you" includes that organization.

**If you do not agree to these Terms, do not access or use the
Service.**

## 1. The Service

### 1.1 What we provide

Retrograde Labs operates a hosted research platform that gives AI
applications and developers structured access to academic research
content (paper search, citation graphs, conference browsing,
research-methodology guidance) sourced from public and licensed
metadata feeds. We expose this functionality through the dashboard,
the custom connectors / AI-application apps, and the command-line
application described above.

### 1.2 What we do not redistribute

The Service does not redistribute paywalled full-text content. Where
full text is available, it is sourced from open-access feeds (such
as arXiv, OpenAccess, and similar repositories) under their
respective licenses. Where the underlying paper is paywalled, the
Service provides metadata, abstracts, citation links, and pointers to
the publisher.

### 1.3 Beta features

Some features may be released as "beta," "preview," or "experimental."
These features are provided as-is, may change without notice, and are
not guaranteed to remain available.

## 2. Account

### 2.1 Eligibility

You must be at least 13 years of age, or the minimum legal age of
consent in your jurisdiction, whichever is higher, and you must not
be barred from using the Service under applicable law.

### 2.2 Registration

You agree to provide accurate registration information and to keep it
current. You are responsible for activity that occurs under your
account, including activity by your team members and by AI
applications you connect to your account.

### 2.3 Credentials

API keys, tokens, and other credentials issued by the Service are
secrets. You are responsible for keeping them confidential and for
the consequences of disclosure or compromise. Promptly revoke any
credential you believe has been compromised; we are not liable for
losses caused by unauthorized use prior to revocation.

### 2.4 Teams

The Service supports both personal and shared **teams** (also called
"organizations"). The owner of a team is responsible for the team's
billing, member roster, and overall account state. Members of a paid
team share the team's plan allowance and credits per the rules
described in the dashboard.

## 3. Plans, fees, and credits

### 3.1 Plans

Current plans, prices, and included allowances are displayed at
[luneresearch.com/pricing](https://luneresearch.com/pricing) and on
the dashboard's billing page. By subscribing to a paid plan you agree
to the displayed prices and recurring charges.

### 3.2 Billing cycle and renewals

Paid plans renew monthly on the anniversary of subscription unless
you cancel. We will charge your payment instrument at the start of
each billing cycle. If a charge fails, we may retry, suspend the
account, or downgrade to the free plan after notice.

### 3.3 Credits

The Service offers prepaid request credits as a top-up. Credits are
purchased in fixed bundles (currently 300 credits for $0.99) through
Stripe. Credits never expire and are consumed one-for-one once your
daily plan allowance is exhausted. Credits are non-refundable except
where required by law.

### 3.4 Cancellation and downgrade

You may cancel or downgrade your subscription at any time through the
dashboard's billing page. Cancellation takes effect at the end of the
current billing period; downgrades take effect at the same boundary.
You retain access to the higher allowance until then.

### 3.5 Refunds

Subscription fees are non-refundable except as required by law or as
expressly stated by us. Where you have purchased a credit pack and
have not used any credits from that pack, you may contact support
within 14 days for a full refund of that pack.

### 3.6 Taxes

Prices are exclusive of applicable taxes. You are responsible for any
sales, use, value-added, or similar taxes on amounts payable, except
taxes based on Retrograde Labs' net income.

### 3.7 Price changes

We may change prices, allowances, or credit terms with at least 30
days' notice (sent to the email on file or posted on the dashboard
billing page). The change takes effect at the start of your next
billing cycle following the notice. If you do not accept the change,
you may cancel before it takes effect.

## 4. Use of the Service

### 4.1 Acceptable use

You will not, and will not permit any third party to:

1. Use the Service to violate any law, regulation, or third-party
   right (including intellectual-property and privacy rights).
2. Reverse engineer, decompile, or attempt to derive the source code
   of any part of the Service that is not already open-source.
3. Bypass, disable, or interfere with rate limits, quotas, billing
   meters, security mechanisms, or team isolation.
4. Use the Service to build a competing service that substantially
   replicates the Service.
5. Republish or redistribute paywalled content obtained via the
   Service in violation of the underlying publisher's license.
6. Use the Service to send spam, malware, harassment, child sexual
   abuse material, or content that infringes the rights of others.
7. Use automated means to scrape the Service in a way that materially
   exceeds normal API or AI-application use, or in a way that is
   designed to evade our quota system.

### 4.2 Acceptable use in AI applications

When you connect Lune to a third-party AI application, you remain
responsible for the queries that application sends and the use you
make of the responses. You must comply both with these Terms and with
the AI application vendor's terms.

### 4.3 Suspension

We may suspend or limit your access to the Service if (a) we have a
good-faith belief that you have materially breached these Terms, (b)
your use is creating a security or operational risk to the Service or
to other users, or (c) we are required to do so by law.

## 5. Customer content

### 5.1 Definition

"**Customer Content**" means the queries, prompts, files, and other
content you submit to the Service, and the responses the Service
returns to you (collectively, your "**inputs**" and "**outputs**").

### 5.2 Ownership

As between you and Retrograde Labs, you retain all rights you have in
your Customer Content. We claim no ownership of your inputs or
outputs.

### 5.3 License to operate

You grant Retrograde Labs a non-exclusive, royalty-free, worldwide
license to host, copy, transmit, display, and otherwise process
Customer Content solely as needed to provide and improve the Service
to you, to enforce these Terms, and to comply with law. We do not
use Customer Content to train machine-learning models.

### 5.4 Responsibility

You are responsible for ensuring that you have all rights, consents,
and authority necessary for us to process your Customer Content as
described.

## 6. Intellectual property

### 6.1 Our rights

Retrograde Labs and its licensors retain all right, title, and
interest in and to the Service, including all trademarks, software,
designs, and documentation. No rights are granted to you except as
expressly set out in these Terms.

### 6.2 Feedback

If you send us suggestions or feedback, you grant Retrograde Labs a
perpetual, irrevocable, royalty-free license to use that feedback to
improve the Service, with no obligation to credit or compensate you.

### 6.3 Open-source components

Portions of the Service include open-source software made available
under their own licenses. Those licenses control with respect to
those portions; nothing in these Terms restricts your rights under
them.

## 7. Privacy

Our [Privacy Policy](https://luneresearch.com/legal/privacy) describes how we collect, use,
and share information. By using the Service you agree to the practices
described there.

## 8. Third-party services and AI applications

The Service interoperates with third-party AI applications and
services. We do not control those third parties, are not responsible
for their conduct, and make no representations about them. Your use
of any third-party AI application is at your own risk and subject to
that application's terms. When you authorize a third-party AI
application to access Lune, you authorize Retrograde Labs to send
responses to that application; what the application does with those
responses is governed by its own terms.

## 9. Disclaimers

EXCEPT AS EXPRESSLY PROVIDED IN THESE TERMS, THE SERVICE IS PROVIDED
"**AS IS**" AND "**AS AVAILABLE**" WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED. RETROGRADE LABS DISCLAIMS ALL IMPLIED
WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, NON-INFRINGEMENT, AND ANY WARRANTY ARISING OUT OF
COURSE OF DEALING OR USAGE OF TRADE. WE DO NOT WARRANT THAT THE
SERVICE WILL BE UNINTERRUPTED, SECURE, OR ERROR-FREE, OR THAT
RESEARCH RESULTS RETURNED BY THE SERVICE WILL BE ACCURATE, COMPLETE,
OR FIT FOR YOUR INTENDED USE.

You are responsible for verifying the accuracy and applicability of
research results before relying on them in any consequential context
(including academic publication, clinical decisions, financial
decisions, or legal proceedings).

## 10. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW:

(a) RETROGRADE LABS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL,
SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY
LOSS OF PROFITS, REVENUES, GOODWILL, OR DATA, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

(b) RETROGRADE LABS' TOTAL LIABILITY ARISING OUT OF OR RELATING TO
THESE TERMS OR THE SERVICE WILL NOT EXCEED THE GREATER OF (i) THE
FEES YOU PAID US IN THE TWELVE (12) MONTHS PRECEDING THE EVENT
GIVING RISE TO THE CLAIM, OR (ii) ONE HUNDRED U.S. DOLLARS (US$100).

These limitations apply regardless of the form of action and even
if a remedy fails of its essential purpose. Some jurisdictions do
not allow the exclusion or limitation of certain damages; in those
jurisdictions our liability is limited to the smallest amount
permitted by law.

## 11. Indemnification

You will defend, indemnify, and hold harmless Retrograde Labs, its
affiliates, officers, employees, and agents from and against any
third-party claims, losses, damages, and expenses (including
reasonable attorneys' fees) arising out of or relating to (a) your
breach of these Terms, (b) your Customer Content, or (c) your use of
the Service in violation of law or third-party rights.

## 12. Term and termination

### 12.1 Term

These Terms apply from the moment you first access the Service and
continue until terminated.

### 12.2 Termination by you

You may terminate by deleting your account at
`/dashboard/settings/account`. Cancellation of paid subscriptions is
governed by Section 3.4.

### 12.3 Termination by us

We may terminate these Terms or suspend your access at any time, with
or without cause, on reasonable notice (or immediately, in the case of
material breach, security risk, or legal compulsion).

### 12.4 Effect of termination

Upon termination: (a) your right to access the Service ends; (b) we
will revoke your API keys and connected applications; (c) we will
delete your Customer Content per Section 5 and our Privacy Policy,
subject to legal retention obligations. Sections that by their
nature should survive termination, including Sections 5.2, 6, 9, 10,
11, 14, and 15, will survive.

## 13. Modifications

We may modify these Terms from time to time. The "Last updated" date
at the top reflects when we last revised them. If a change is
material, we will give at least 30 days' notice (by email or
in-product banner) before it takes effect. Continued use of the
Service after a change becomes effective constitutes acceptance.

## 14. Governing law and disputes

### 14.1 Governing law

These Terms are governed by the laws of the State of California,
United States, without regard to conflict-of-law principles. The
United Nations Convention on Contracts for the International Sale of
Goods does not apply.

### 14.2 Disputes

Except for disputes that may be brought in small-claims court or
that involve injunctive relief for intellectual-property
infringement, any dispute arising out of or relating to these Terms
or the Service will be resolved by final and binding arbitration
administered by JAMS in San Francisco, California, in English, before
a single arbitrator. Judgment on the award may be entered in any
court of competent jurisdiction.

### 14.3 Class-action waiver

You and Retrograde Labs each waive the right to bring or participate
in any class, collective, or representative action against the
other.

### 14.4 30-day right to opt out

You may opt out of Sections 14.2–14.3 by sending written notice to
[legal@luneresearch.com](mailto:legal@luneresearch.com) within 30
days of first accepting these Terms. Opting out does not affect any
other part of these Terms.

## 15. General

### 15.1 Notices

Notices to you may be sent to the email on file or posted on the
dashboard. Notices to us must be sent to
[legal@luneresearch.com](mailto:legal@luneresearch.com).

### 15.2 Assignment

You may not assign or transfer these Terms without our prior written
consent. We may assign these Terms in connection with a merger,
acquisition, or sale of assets.

### 15.3 No waiver

Failure to enforce any provision is not a waiver of that provision
or of any other right.

### 15.4 Severability

If any provision of these Terms is held unenforceable, the remaining
provisions remain in full force.

### 15.5 Entire agreement

These Terms, together with the Privacy Policy and any order form or
addendum we sign with you, are the entire agreement between you and
Retrograde Labs regarding the Service and supersede all prior
agreements on the subject.

### 15.6 Force majeure

Neither party is liable for failure or delay in performance caused
by circumstances beyond its reasonable control, including natural
disasters, war, terrorism, civil unrest, government action,
pandemic, internet or power outages, or third-party service
failures.

## 16. Contact

For questions about these Terms or the Service:

- **Support:** [support@luneresearch.com](mailto:support@luneresearch.com)
- **Legal:** [legal@luneresearch.com](mailto:legal@luneresearch.com)
- **Mailing address:** Retrograde Labs, Attn: Legal, [mailing address on file with Stripe].