Privacy Policy

This policy covers the ManticView website (https://manticview.anticarbon.me), the ManticView Google Sheets add-on and template, and the ManticView Android app (together, the "Service"), published by Anticarbon. The short version: ManticView does not collect, store, sell, share, or transfer your personal data or your Google user data. Last updated July 21, 2026.

What the Service does

ManticView displays live prediction-market data from the public Manifold Markets API (https://api.manifold.markets). All market data shown by the Service is public information published by Manifold Markets, Inc., which is not affiliated with ManticView.

Data the Google Sheets add-on accesses

The add-on requests the minimum Google permissions it needs to work:

Current spreadsheet only — to write the formulas and values you explicitly insert, and to refresh formulas when you ask it to. The add-on never reads or modifies other files in your Google Drive, and it never transmits the contents of your spreadsheet anywhere.

Connect to an external service — solely to fetch public market data from api.manifold.markets. The add-on's manifest technically restricts network requests to that single domain. The only information sent to Manifold is the search terms, market identifiers, and public usernames you type into the add-on; requests are anonymous and carry no Google account information.

Display sidebars and dialogs, and manage script triggers — to show the add-on's interface and, only if you turn it on, to run the hourly auto-refresh you requested. Turning auto-refresh off removes the trigger.

Data we store

None. The add-on keeps a short-lived (five-minute) cache of public API responses inside Google's Apps Script infrastructure to avoid repeated requests; it contains only public market data and expires automatically. There are no accounts, no analytics, no advertising identifiers, no cookies set by us, and no databases of ours holding anything about you.

The add-on's use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

Sharing, transfer, and disclosure of Google user data

ManticView does not share, sell, rent, transfer, or otherwise disclose your Google user data — including the contents of your spreadsheet — to any third party. The data the add-on touches never leaves your Google account: it is processed entirely within Google's Apps Script environment, under your own authorization, and is not sent to ManticView, to Anticarbon, or to any outside server or person.

We do not transfer Google user data to advertisers, data brokers, or analytics providers, and we do not use it for advertising, to train machine-learning or AI models, or for any purpose other than delivering the feature you asked for. The only outbound network request the add-on makes is to the public Manifold Markets API (api.manifold.markets), and it carries only the public search terms, market identifiers, and public usernames you type in — never your Google account information or spreadsheet contents. If ManticView were ever transferred to a new owner, this policy and its Limited Use commitments would continue to apply, and we would ask for your consent before any new use of your data. We disclose data only where required by law, and would limit any such disclosure to what the law compels.

How we protect your data

Because ManticView keeps no Google user data on servers of its own, the primary protection for your data is that it stays inside Google's own secured infrastructure at all times:

Least-privilege access. The add-on requests only the narrow OAuth scopes it needs — the current spreadsheet, an outbound connection restricted in its manifest to a single domain, its own sidebar interface, and its own refresh triggers. It cannot see your other Drive files, your email, or your account profile.

Encryption in transit. All communication between your browser, Google's servers, and the Manifold API is protected with HTTPS/TLS, and the website is served over HTTPS.

Processing within Google. The add-on runs in Google's Apps Script sandbox under your account's own protections. The only data held at rest is the five-minute cache described above, which contains public market data (never your spreadsheet contents or any sensitive personal data) and expires automatically.

No collection of sensitive data. The Service does not request or process sensitive categories of personal data such as financial-account credentials, health data, government identifiers, or precise location. If your spreadsheet happens to contain such information, the add-on neither reads it (beyond the specific cells whose ManticView formulas you insert) nor transmits it anywhere. The project's source code is public, so these protections can be independently audited.

Data retention and deletion

ManticView retains no Google user data. We keep no long-term copies of your spreadsheet contents or account information — there is no database on our side to hold them. The only retained data of any kind is the five-minute cache of public Manifold market data described above, which lives inside Google's Apps Script infrastructure and is deleted automatically when it expires.

Any values and formulas the add-on writes are stored in your spreadsheet, inside your own Google account, entirely under your control. You can edit or delete them at any time like any other cell content. To stop the add-on and revoke every permission you granted it:

1. In your spreadsheet, open Extensions → Add-ons → Manage add-ons and remove ManticView (this also deletes any auto-refresh trigger you enabled); then
2. Review and revoke ManticView's access at myaccount.google.com/permissions.

Uninstalling the Android app removes the watchlist it stored on your device. If you would like help confirming that your data has been removed, contact us using the details below.

The Android app

The Android app stores your watchlist on your device only and talks directly to the public Manifold API. It contains no analytics or tracking of any kind.

Third parties

Requests made by the Service reach Manifold Markets (market data) and, on the website, Google Fonts (typefaces). Each is governed by its own privacy policy. GitHub Pages hosts the website and may log standard web-server requests.

Changes and contact

If this policy changes, the new version will be published at this address with an updated date. Questions or data-related requests are welcome by email at nova@anticarbon.me or on the project's GitHub repository.