Cookie Policy
How we use cookies and similar technologies on the Sigvex platform.
Effective Date: 2026-02-18 · Last Updated: 2026-02-18
1. What Are Cookies
Cookies are small text files placed on your device when you visit a website. They are widely used to make websites work efficiently, provide a better user experience, and supply information to site operators. Similar technologies include local storage, session storage, and pixel tags, which serve comparable purposes.
This Cookie Policy explains which cookies and similar technologies the Sigvex platform at sigvex.io (the "Service") uses, why we use them, and how you can control them. This policy should be read alongside our Privacy Policy.
2. How We Use Cookies
We use cookies and similar technologies for the following purposes:
- Authentication and Session Management: To sign you in, maintain your session as you navigate between pages, and keep you logged in securely.
- Security: To protect against cross-site request forgery (CSRF) and other security threats.
- Preferences: To remember your settings such as theme (light/dark mode), language, display density, and other interface preferences.
- Analytics: To understand how visitors use the Service so we can identify issues, measure performance, and improve the user experience.
We do not use cookies for advertising, behavioural targeting, or cross-site tracking. We do not participate in advertising networks or sell data collected through cookies.
3. Categories of Cookies
3.1 Strictly Necessary Cookies
These cookies are essential for the Service to function. Without them, core features such as authentication and navigation cannot operate. They cannot be disabled.
| Cookie | Purpose | Duration | Type |
|---|---|---|---|
session_id | Maintains your authenticated session across page requests | Session (expires when browser closes) or up to 30 days if "Remember me" is selected | First-party |
csrf_token | Protects against cross-site request forgery attacks on form submissions and API calls | Session | First-party |
auth_state | Stores temporary state during the OAuth authentication flow with third-party providers | 5 minutes | First-party |
3.2 Functional Cookies
These cookies remember your choices and preferences to provide a more personalised experience. Disabling them will reset your preferences to defaults on each visit.
| Cookie / Storage Key | Purpose | Duration | Type |
|---|---|---|---|
theme | Stores your preferred colour theme (light, dark, or system) | 12 months | Local storage |
sidebar_collapsed | Remembers whether you collapsed the documentation sidebar | 12 months | Local storage |
preferred_runtime | Remembers your last-selected runtime (EVM or SVM) for analysis tools | 12 months | Local storage |
cookie_consent | Records your cookie consent preferences | 12 months | First-party cookie |
3.3 Analytics Cookies
These cookies collect anonymised, aggregate data about how visitors use the Service. They help us understand page performance, feature adoption, and navigation patterns. Analytics cookies are only set if you have given consent.
| Cookie | Purpose | Duration | Type |
|---|---|---|---|
_sv_analytics | Assigns a random, non-identifying visitor identifier to aggregate page view and feature usage statistics | 12 months | First-party |
_sv_session | Groups page views into sessions for aggregate session-duration and navigation-path analysis | 30 minutes (rolling) | First-party |
4. Third-Party Cookies
The Service minimises the use of third-party cookies. Where third-party cookies are present, they are limited to:
- Authentication Providers: When you sign in via a third-party provider (e.g., GitHub, Google), that provider may set cookies on your device as part of the OAuth authentication flow. These cookies are governed by the provider's own cookie and privacy policies.
- Payment Processors: If you subscribe to a paid plan, our payment processor may set cookies to facilitate secure payment processing and fraud prevention. These cookies are governed by the processor's policies.
We do not use third-party advertising cookies, social media tracking pixels, or cross-site tracking technologies.
5. Managing Your Cookie Preferences
5.1 Consent
When you first visit the Service, you will be presented with a cookie consent banner allowing you to accept or reject non-essential cookies (functional and analytics). Strictly necessary cookies do not require consent as they are essential for the Service to operate.
5.2 Changing Your Preferences
You can change your cookie preferences at any time by:
- Accessing the cookie settings via the footer link on any page.
- Clearing cookies through your browser settings (see Section 5.3).
5.3 Browser Controls
Most web browsers allow you to manage cookies through their settings. You can typically:
- View which cookies are stored on your device.
- Delete individual cookies or clear all cookies.
- Block cookies from specific sites or all sites.
- Set your browser to notify you when a cookie is being set.
Consult your browser's help documentation for specific instructions. Note that blocking strictly necessary cookies will impair the functionality of the Service (you will not be able to sign in or maintain a session).
5.4 Global Privacy Control (GPC)
The Service recognises and honours the Global Privacy Control (GPC) signal. If your browser or extension sends a GPC signal, we will treat it as a request to opt out of non-essential cookies, equivalent to rejecting analytics cookies in our consent banner.
6. Do Not Track
Some browsers offer a "Do Not Track" (DNT) setting. There is no industry-wide standard for DNT. We treat GPC signals (see Section 5.4) as the authoritative opt-out mechanism. Where both GPC and DNT are present, we honour GPC.
7. Data Collected Through Cookies
Personal data collected through cookies is processed in accordance with our Privacy Policy. Analytics data is aggregated and does not identify individual users. Session and authentication cookies contain randomly generated identifiers, not personal information.
8. Changes to This Cookie Policy
We may update this Cookie Policy from time to time. When we make changes, we will update the "Last Updated" date at the top of this page. If we introduce new categories of cookies or materially change how we use cookies, we will re-prompt you for consent where required.