Privacy Policy

Overview

NumeriXGPT LLC ("we," "us," "our") operates AgrStak — an AI-powered agricultural decision support platform that transforms USDA research into calculator tools for farmers, researchers, and agricultural professionals. This Privacy Policy applies to all AgrStak products and services, including our calculator storefronts hosted at numerixgpt.com and related domains, and the AgrStak Chat Widget (ACW).

This policy replaces our prior Privacy Policy dated December 2024. It has been updated to reflect the full scope of the AgrStak platform, including calculator functionality, AI-powered chat assistance, and institutional data partnerships.

1. What We Collect

We collect the following categories of information depending on how you use AgrStak:

1.1 Information You Provide Directly

• Email address — when you join our waitlist, subscribe to updates, or create an account
• Name — if you create an account or contact us
• Professional context — your role (farmer, researcher, extension agent) if you voluntarily provide it
• Support communications — messages you send to our support or contact channels

1.2 Information Collected Automatically

• Usage data — pages visited, calculators used, features accessed, and time spent
• Device and browser information — browser type, operating system, screen size
• IP address — used for analytics and security; not linked to your identity
• Referral source — how you arrived at AgrStak (e.g., search engine, direct link)

1.3 What We Do NOT Collect

• Calculator input values — soil measurements, crop parameters, field data — are never stored on our servers. They exist only in your browser session.
• Farm location data or GPS coordinates
• Financial or banking information
• Government-issued identification numbers

2. Calculator & Research Model Data

AgrStak's 431 calculator models are built on USDA agricultural research. Understanding how calculator data is handled is important for our users.

• Your inputs are ephemeral. All values you enter into any AgrStak calculator are processed locally in your browser and are not transmitted to or stored on AgrStak servers.
• Results are not stored. Calculation outputs displayed on screen are not retained by AgrStak unless you choose to export or download them yourself.
• Model metadata is maintained internally. AgrStak maintains a model registry (model ID, source citation, version, validation date) for governance and IP purposes. This contains no user data.
• Aggregate usage is tracked. We track which calculators are used, how often, and for how long — anonymously, via Google Analytics — to improve the platform.

3. AI & Chat Widget Data (ACW)

AgrStak's Chat Widget (ACW) is powered by the Anthropic Claude API. When you use the chat assistant on any calculator page, the following applies:

• Messages you send to the ACW are transmitted to the Anthropic API to generate responses. Anthropic's data practices are governed by Anthropic's Privacy Policy.
• Do not include personal information — names, addresses, financial data, or other sensitive details — in chat messages. Chat is designed for agricultural questions only.
• Anthropic API data agreements prohibit use of transmitted prompts for model training. Your chat messages are not used to train AI models.
• Chat sessions are not stored by AgrStak on our servers. Conversation history exists only within your active browser session.
• No institutional partner data is ever transmitted through the chat widget without explicit consent.

4. Analytics & Cookies

4.1 Google Analytics

We use Google Analytics 4 (GA4) to understand how AgrStak is used. GA4 collects anonymized data including pages visited, calculator interactions, session duration, and device information. No personally identifiable information is transmitted to Google Analytics.

To opt out of Google Analytics tracking, you may install the Google Analytics Opt-out Browser Add-on.

4.2 Cookies

AgrStak uses the following types of cookies:

• Strictly necessary cookies — required for the platform to function (e.g., session management). Cannot be disabled.
• Analytics cookies — GA4 cookies that collect anonymous usage data. You may opt out via browser settings or the GA4 opt-out add-on.
• Preference cookies — remember your calculator settings and preferences within a session.

We do not use advertising cookies or third-party tracking cookies. AgrStak products are ad-free.

5. Institutional Partner Data

AgrStak partners with USDA research institutions, land-grant universities, and extension services through formal Data Sharing Agreements (DSAs). If you are an institutional partner, the following applies:

• Data shared under a DSA is governed by the terms of that specific agreement, which supplements this Privacy Policy.
• Institutional Shared Data is classified as Confidential and subject to the highest protection standards in our Data Governance Framework.
• Non-public research data from institutional partners is never transmitted to third-party AI APIs without explicit written consent.
• Institutional partner data is never used to train AI models.
• Data is retained only for the duration specified in the applicable DSA.

To review AgrStak's institutional data practices in full, see our Data Governance Framework or Data Sharing Agreement template.

6. How We Use Your Information

We use the information we collect to:

• Operate, maintain, and improve the AgrStak platform and its 431 calculator models
• Send product updates, new calculator announcements, and agricultural research insights — only if you have opted in
• Respond to your questions, support requests, and partnership inquiries
• Analyze anonymous usage patterns to improve calculator usability and performance
• Monitor platform security and detect suspicious activity
• Comply with legal obligations including tax records and regulatory requirements
• Maintain our research model registry for IP and governance purposes

We do not use your data for advertising purposes. AgrStak platforms are ad-free. We do not sell personal information to any third party.

7. Data Sharing & Disclosure

We do not sell, rent, or trade your personal information. We may share data in the following limited circumstances:

7.1 Service Providers

We work with trusted service providers who process data on our behalf under strict data processing agreements:

• Vercel — platform hosting (SOC 2 Type II certified)
• Google Analytics — anonymous usage analytics
• Anthropic — AI chat assistant API (no training use)
• Google Workspace — business communications
• Mercury — payment and banking processing

7.2 Legal Requirements

We may disclose information if required by law, court order, or government authority, or to protect the rights, property, or safety of NumeriXGPT LLC, our users, or the public.

7.3 Business Transfers

In the event of a merger, acquisition, or sale of assets, user data may be transferred as part of that transaction. We will notify users via email or prominent website notice before data is transferred and becomes subject to a different privacy policy.

7.4 With Your Consent

We may share your information in other ways if you give us explicit permission to do so.

8. Data Security

AgrStak implements industry-standard security measures to protect your information:

• Encryption in transit — all data transmitted between your browser and AgrStak is encrypted using TLS 1.2 or higher
• Encryption at rest — stored data is encrypted using AES-256
• HTTPS enforced — all AgrStak pages are served over HTTPS; HTTP connections are redirected
• Access controls — role-based access with multi-factor authentication required for internal systems
• SOC 2 hosting — platform hosted on Vercel, which maintains SOC 2 Type II certification
• API key security — all API credentials are stored securely and never exposed in source code

While we take security seriously, no method of transmission or storage is 100% secure. If you believe your data has been compromised, contact us immediately at [email protected].

9. Data Retention

We retain your information only as long as necessary for the purposes outlined in this policy:

• Calculator inputs — never stored; session only
• Account information — retained for the duration of your account plus 90 days after deletion
• Email communications — retained while you are subscribed; deleted within 30 days of unsubscription upon request
• Analytics data — 26 months per Google Analytics 4 default settings
• Support communications — 2 years
• Payment records — 7 years for tax and financial compliance
• Research model logs — indefinitely for IP protection purposes; contains no personal data

You may request deletion of your personal data at any time by contacting us at [email protected].

10. Your Rights

Regardless of where you are located, you have the following rights with respect to your personal information:

• Access — request a copy of the personal information we hold about you
• Correction — request correction of inaccurate or incomplete information
• Deletion — request deletion of your personal information, subject to legal retention requirements
• Opt-out of communications — unsubscribe from marketing emails at any time using the unsubscribe link in any email we send
• Data portability — request your personal data in a portable, machine-readable format
• Withdraw consent — where processing is based on your consent, you may withdraw that consent at any time

To exercise any of these rights, email [email protected]. We will respond within 30 days.

11. California Residents — CCPA Rights

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA):

• Right to know — the categories and specific pieces of personal information we have collected about you in the past 12 months
• Right to deletion — request deletion of personal information we have collected, subject to certain exceptions
• Right to opt out of sale — we do not sell personal information. This right is automatically satisfied.
• Right to non-discrimination — we will not discriminate against you for exercising any CCPA right
• Right to correct — request correction of inaccurate personal information

To submit a CCPA request, contact us at [email protected] with "CCPA Request" in the subject line. We will verify your identity and respond within 45 days.

12. International Users — GDPR

AgrStak's services are operated from the United States. If you access AgrStak from outside the United States — including from the European Economic Area (EEA) — your data will be transferred to and processed in the United States.

If you are located in the EEA, UK, or Switzerland, you have additional rights under the General Data Protection Regulation (GDPR):

• Legal basis for processing — we process your data based on: (a) your consent; (b) performance of a contract; (c) our legitimate interests in operating the platform; or (d) compliance with legal obligations
• Right to object — you may object to processing based on legitimate interests
• Right to restrict processing — you may request we restrict processing in certain circumstances
• Right to lodge a complaint — you have the right to complain to your local data protection authority

For GDPR inquiries, contact [email protected].

13. Children's Privacy

AgrStak is not directed to individuals under the age of 18. We do not knowingly collect personal information from children. If we learn that we have collected information from a person under 18, we will delete it promptly. If you believe we have inadvertently collected information from a child, please contact us at [email protected].

14. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our platform, legal requirements, or data practices. When we make material changes, we will:

• Update the "Last Updated" date at the top of this page
• Post a notice on our website for at least 30 days
• Send an email notification to registered users for significant changes

Your continued use of AgrStak after changes become effective constitutes your acceptance of the updated policy. If you do not agree to the updated policy, please discontinue use of the platform and contact us to delete your account.

Previous versions: Version 1.0, December 2024 — covered waitlist email collection and Google Analytics only. Available upon request.

15. Contact Us

If you have questions, concerns, or requests related to this Privacy Policy or your personal data, please contact us: