By accessing or using SubGrade (“the platform,” “the service”) at subgrade.io, including the SubGrade API, Explorer, or any associated tools, you agree to be bound by these Terms of Service (“Terms”). If you do not agree, do not use the platform.
SubGrade is operated by Keystone Digital Labs LLC (“we,” “us,” “our”), a Pennsylvania limited liability company.
SubGrade is a satellite intelligence platform that detects land clearing, construction, and ground disturbance from Sentinel-2 satellite imagery. We process imagery to identify where ground is being broken across the United States and deliver this intelligence through:
SubGrade may also be accessible through third-party AI platforms and app directories, including the ChatGPT App Directory. Access through any channel is subject to these Terms.
SubGrade is an infrastructure data product. We provide detection data and satellite imagery. We do not provide construction consulting, environmental compliance, legal compliance, investment advice, or any form of professional advisory service.
Certain SubGrade endpoints and the Explorer interface are publicly accessible without an account. Public access is provided for evaluation purposes and is subject to these Terms.
To access authenticated API endpoints and higher usage limits, you must create an account using an email address. You must provide accurate information and keep your account credentials secure. You are responsible for all activity under your account, including all API calls made using your API key.
You must be at least 18 years old to create a SubGrade account. If you are using SubGrade on behalf of a business or organization, you represent that you have authority to bind that entity to these Terms.
Upon registration, you receive an API key for authenticated access. Your API key is a credential equivalent to a password. You are responsible for keeping it secure. Do not share your API key publicly, embed it in client-side code, or commit it to public repositories. If you believe your API key has been compromised, regenerate it immediately through your account page.
We reserve the right to revoke or rotate API keys at any time for security reasons.
We reserve the right to suspend or terminate any account, revoke API access, and remove any content, with or without notice, for any reason including but not limited to violation of these Terms, abusive API usage, or conduct that is harmful to the platform or other users.
You may delete your account at any time by contacting us at contact@subgrade.io.
New accounts receive 100 API calls at no charge and with no credit card required. The free tier is intended for evaluation and testing. Free tier usage is subject to the same Terms as paid usage.
The Pro tier provides 1,000 API calls per month for $49/month. Payment is processed by Stripe. By subscribing, you agree to Stripe’s terms of service. Subscription billing is monthly and recurring until cancelled.
Additional pricing tiers may be introduced as the platform evolves. Pricing and terms for new tiers will be displayed on the platform before purchase.
API calls are metered per account. Usage counts are tracked by the platform and are considered authoritative. If you believe your usage count is incorrect, contact us at contact@subgrade.io.
You may cancel your Pro subscription at any time through the Stripe Customer Portal accessible from your account page. Cancellation takes effect at the end of the current billing period. We do not offer refunds for partial billing periods. If you experience a technical issue that prevents you from using the service, contact us and we will work to resolve the issue or, at our discretion, issue a credit.
API endpoints are rate-limited to ensure fair use and platform stability. Current rate limits are documented in the API documentation. We reserve the right to adjust rate limits at any time.
You may use SubGrade data for any lawful purpose, including commercial applications, research, analysis, integration into your own products and services, and internal business intelligence.
You agree not to:
When displaying or publishing SubGrade data in applications, reports, or publications, you must include reasonable attribution to SubGrade (e.g., “Data: SubGrade” or “Source: subgrade.io”). Attribution is not required for internal use.
SubGrade detections represent areas where our algorithms have identified ground disturbance by comparing satellite imagery month-over-month. Detections are classified by confidence level (HIGH, MEDIUM, LOW) based on signal strength and contextual analysis.
SubGrade data is informational and is not a substitute for professional site assessment, environmental survey, ground-truth verification, or any other form of expert analysis.
Detection data has inherent limitations:
Before/after imagery is generated from Sentinel-2 data provided by the EU Copernicus Programme. Images are natural color composites at 10-meter resolution. Image quality varies based on cloud cover, atmospheric conditions, and sun angle at the time of capture.
WE DO NOT WARRANT THAT DETECTION DATA IS ACCURATE, COMPLETE, CURRENT, OR ERROR-FREE. WE DO NOT WARRANT THAT DETECTIONS CORRESPOND TO ACTUAL GROUND DISTURBANCE. WE DO NOT WARRANT THAT THE ABSENCE OF A DETECTION MEANS NO GROUND DISTURBANCE HAS OCCURRED.
You are solely responsible for verifying any SubGrade data before making decisions based on it. We strongly recommend ground-truth verification before taking any action based on detection data, particularly for investment decisions, regulatory compliance, environmental assessment, or legal proceedings.
The SubGrade platform, including its detection algorithms, processing pipeline, API design, branding, website design, and documentation, is the property of Keystone Digital Labs LLC. You may not copy, modify, or create derivative works from any part of the platform other than through the provided API.
Before/after satellite imagery is derived from Sentinel-2 data provided by the EU Copernicus Programme under its free and open data policy. Copernicus Sentinel data is subject to the terms of the Copernicus Sentinel Data Terms and Conditions.
When you access SubGrade data through the API or Explorer (whether on the free tier or Pro tier), you receive a non-exclusive, non-transferable license to use that data for your own purposes, subject to the restrictions in Section 5. This license does not grant ownership of the underlying data or any intellectual property rights.
THE PLATFORM, API, DETECTION DATA, SATELLITE IMAGERY, AND ALL ASSOCIATED CONTENT ARE PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
WE DO NOT WARRANT THAT:
TO THE MAXIMUM EXTENT PERMITTED BY LAW, KEYSTONE DIGITAL LABS LLC AND ITS MEMBERS, EMPLOYEES, AND AGENTS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS, BUSINESS OPPORTUNITIES, DATA, OR GOODWILL, ARISING OUT OF OR RELATED TO:
OUR TOTAL LIABILITY FOR ANY CLAIM ARISING FROM THESE TERMS OR YOUR USE OF THE PLATFORM SHALL NOT EXCEED THE AMOUNT YOU PAID TO US IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM, OR FIFTY DOLLARS ($50.00), WHICHEVER IS GREATER.
You agree to indemnify and hold harmless Keystone Digital Labs LLC and its members, employees, and agents from any claims, damages, losses, liabilities, and expenses (including reasonable attorneys’ fees) arising from:
These Terms are governed by the laws of the Commonwealth of Pennsylvania, without regard to conflict of law principles.
Before initiating any formal dispute proceeding, you agree to contact us at contact@subgrade.io and attempt to resolve the issue informally for at least 30 days.
If we cannot resolve a dispute informally within 30 days, any claim, dispute, or controversy arising out of or relating to these Terms or the platform shall be resolved by binding arbitration administered by the American Arbitration Association (“AAA”) under its Commercial Arbitration Rules. Arbitration will take place in Lancaster County, Pennsylvania, or at another mutually agreed location. The arbitrator’s decision shall be final and binding.
Either party may seek injunctive or other equitable relief in any court of competent jurisdiction to prevent the actual or threatened infringement of intellectual property rights or to address platform security concerns, without first engaging in arbitration.
YOU AND KEYSTONE DIGITAL LABS LLC AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN YOUR OR ITS INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, CONSOLIDATED, OR REPRESENTATIVE PROCEEDING.
Either party may bring an individual action in small claims court in Lancaster County, Pennsylvania, if the claim qualifies.
You may opt out of the arbitration and class action waiver provisions by sending written notice to contact@subgrade.io within 30 days of first accepting these Terms. If you opt out, disputes will be subject to the exclusive jurisdiction of the state and federal courts located in Lancaster County, Pennsylvania.
SubGrade is provided without any guaranteed service level or uptime commitment. We make reasonable efforts to maintain availability but may experience downtime for maintenance, updates, or unforeseen issues.
We may modify, suspend, or discontinue any part of the platform or API at any time, with or without notice. We will make reasonable efforts to provide advance notice of breaking changes to the API.
Geographic coverage, temporal coverage, and data freshness may vary. We make no guarantee that detection data will be available for any specific location or time period.
We may update these Terms from time to time. If we make material changes, we will notify you by email (if you have an account) or by posting a notice on the platform at least 14 days before the changes take effect. Your continued use of the platform after the effective date constitutes acceptance.
If any provision of these Terms is found to be unenforceable, the remaining provisions shall continue in full force and effect.
These Terms, together with our Privacy Policy, constitute the entire agreement between you and Keystone Digital Labs LLC regarding your use of SubGrade.
For questions about these Terms:
Email: contact@subgrade.io
Mail:
Keystone Digital Labs LLC
4069 Green Park Drive
Mount Joy, PA 17552