Privacy Policy

Last updated: August 23, 2026

1. Data Collection

The "Superpower for Claude" Chrome Extension is primarily a client-side application. We do not automatically collect, store, or transmit your personal information, chat content, or browsing history. We do not operate any servers of our own, and we have no ability to see your conversations, your saved data, or your usage of the extension. The one case where data leaves your device is the optional Google Drive Sync feature, which is off by default, sends data only to your own private Drive folder, and is described in Section 5. Separately, if you choose to subscribe to the newsletter, either on this website or from inside the extension, we collect the email address you enter. See Section 12.

2. Data Storage

All user data generated by the extension (such as saved folders, saved prompts, saved chains, bookmarked messages, chat notes, and settings preferences) is stored locally on your device using the browser's chrome.storage.local and chrome.storage.sync capabilities. This data may be synced across your own devices if you have Chrome Sync enabled, but it is not accessible to the developer.

Optionally, you may also enable Google Drive Sync to back up this data to your own private Google Drive folder. This feature is off by default and is described in Section 5.

3. Website Interactions

The extension interacts with claude.ai to provide features such as Prompt Optimization, Usage Counter, and Prompt Chains. These interactions occur strictly within your browser using your existing claude.ai session.

• Prompt Optimization: Your prompt is temporarily copied to a new background tab within your browser session to generate an optimized version. It is never sent to any external server owned by the developer.
• Usage Counter: The extension reads your usage data from Claude's own API locally within your browser session to display your current usage. No usage data is collected or transmitted externally.
• Prompt Chains: The extension monitors Claude's streaming state locally to detect when a response has finished generating, so it can automatically send the next step of a chain. No network data is collected or transmitted externally.
• Chat Export: The extension reads conversation data from Claude's own API to enable PDF and Markdown export. All processing happens locally in your browser.

4. Permissions

The extension requests the following browser permissions:

• storage: To save your settings, folders, prompts, chains, bookmarks, and notes locally on your device.
• tabs: To interact with your claude.ai tabs and to open, drive, and close the temporary background tab used by the Prompt Optimizer.
• scripting: To inject interface enhancements into the claude.ai page and to drive the Prompt Optimizer's background tab.
• alarms: To schedule periodic license validation checks.

The extension also requests the following optional permissions, which are never requested at install time and are only prompted for if you choose to use the related feature:

• identity (optional): Requested only if you enable Google Drive Sync, to obtain a Google OAuth token limited to the drive.appdata scope. See Section 5.

Host access is limited to the following:

• claude.ai (required): The only site the extension runs on. Required to inject its interface enhancements into the page.
• api.lemonsqueezy.com (optional): Requested only if you activate a premium license key. See Section 6.

5. Google Drive Sync (Optional, Pro Feature)

Google Drive Sync is disabled by default. It is only activated if you explicitly turn it on in the extension's settings, at which point you will be asked to grant the optional identity permission and sign in to your Google account.

If you enable it, the extension backs up and syncs your saved folders, prompts, chains, bookmarked messages, and per-chat notes to your own Google Drive, so they stay consistent across your devices and browsers.

• Bookmarks include a short excerpt of the message: When you bookmark one of Claude's responses, the extension saves the conversation's identifier, an identifier for that message, and a short excerpt of the response (up to 140 characters) so the bookmark can be labeled in your jump-to list. If Drive Sync is on, that excerpt is included in the backup. This is the only synced item that contains any of Claude's output; folders, prompts, chains, and notes contain only your own text and identifiers. Nothing else from your conversations is uploaded, and none of it is ever sent to the developer.
• Scope is strictly limited: The extension requests only the https://www.googleapis.com/auth/drive.appdata scope. This grants access solely to a hidden, application-specific folder ("appDataFolder") inside your Drive that is created for this extension.
• We cannot see your other files: This scope does not permit the extension to read, list, modify, or access any of your personal Drive files, documents, photos, or folders. It also cannot access any other app's data.
• Your data stays yours: The synced data is stored in your own Google Drive account. It is never transmitted to, stored on, or accessible by the developer. We do not operate any servers and never receive a copy of this data.
• Authentication: OAuth is handled by Google via chrome.identity. The resulting access token is used only to read and write the extension's own sync file via the Google Drive API (googleapis.com). We never see your Google password.
• Revoking access: You can disable sync at any time from the extension's settings, and you may revoke the extension's Drive access at any time from your Google Account permissions page.

6. Premium Licensing (Pro Features)

If you choose to activate a premium license key, the extension communicates with LemonSqueezy (a third-party payment and licensing platform) to validate your license. This involves sending your license key to api.lemonsqueezy.com for activation, periodic validation, and deactivation. This communication only occurs if you voluntarily enter a license key. No personal payment information is handled by the extension itself — all purchases are processed directly by LemonSqueezy through their website.

7. Bug Reporting & Feature Proposals

The extension provides "Report a Bug" and "Propose a Feature" buttons that open Google Forms.

• Report a Bug: Automatically pre-fills your Extension Version and User Agent (browser/OS details) into the form URL.
• Propose a Feature: Automatically pre-fills your Extension Version into the form URL.
• Voluntary Submission: This data is only transmitted to Google Forms if you manually click "Submit." Simply opening the form does not send any data to the developer.
• Purpose: This information is used solely for troubleshooting bugs and prioritizing feature development.

8. Uninstall Feedback

When the extension is uninstalled, your browser may open a feedback form. The only data included automatically in the URL is the extension version number. No personal information is transmitted. Submitting the form is entirely voluntary.

9. Third-Party Services

This extension enhances the user interface of Claude by Anthropic. It is not affiliated with Anthropic, PBC. The extension functions by injecting custom interface elements, managing local storage for organization, and automating specific user actions on the Claude website. The following third-party services are used:

• Claude (claude.ai): The target website the extension enhances. All page interactions occur locally in your browser.
• Google Drive (googleapis.com): Used only if you enable the optional Google Drive Sync feature, to store the extension's sync file in your own private app-specific Drive folder, as described in Section 5. Not contacted unless you turn sync on.
• LemonSqueezy (api.lemonsqueezy.com): License key validation for optional premium features, as described in Section 6. Only contacted when a license key is provided.
• superpowerforai.com: Our own website. The extension contacts it only when you submit the optional newsletter signup, and the request carries only the email address you typed. See Section 12.
• Sender (sender.net): Email marketing provider for the newsletter described in Section 12. The extension never contacts it directly; a signup made inside the extension goes to our website, which passes it to Sender.

10. Data Management & Liability

The extension interacts with the Claude web interface to provide features such as prompt optimization, chat export, usage tracking, and prompt/chain libraries. While we strive for reliability, the software is provided "as is." The developer is not responsible for any data loss, unintended modifications, or disruption of functionality caused by network errors, changes to the Claude user interface, browser updates, or user error.

11. Data Retention

Locally stored data (folders, prompts, chains, bookmarks, settings, chat notes) remains on your device until you delete it from within the extension or uninstall the extension. License validation records sent to LemonSqueezy are retained according to that provider's own retention policy. Disconnecting Google Drive Sync revokes the OAuth token; the synced backup file in your Drive's app-data folder remains under your control and can be deleted from your Google Drive at any time. Newsletter addresses are covered separately in Section 12.

12. Newsletter

This section covers the newsletter signup, which lives in three places: the form on superpowerforai.com, the mail button in the extension's settings popup, and the form at the bottom of the welcome page the extension opens after install. All three are optional and work the same way: nothing happens until you type your email address and submit it.

• What we collect: Only the email address you type in, and which product's list you submitted it from. Nothing is pre-filled, and neither the website nor the extension reads an address from your browser.
• Why: To send occasional updates about Superpower for Claude: breakage alerts, new features, and subscriber deals, roughly once a month.
• Legal basis: Your consent, given when you submit the form. You can withdraw it at any time, and withdrawing it does not affect anything else.
• Who processes it: Sender (sender.net), an email marketing provider, stores the list and delivers the emails on our behalf. Your address is never sold, rented, or shared with anyone else. The submission, from any of the three forms, passes through our site on Cloudflare Pages before reaching Sender.
• Withdrawing consent: Every email includes a one click unsubscribe link. You can also email us and ask to be removed.
• Retention: We keep your address until you unsubscribe or ask us to delete it, whichever comes first.

13. Contact

If you have questions about this policy, you can contact the developer at [email protected].