Last updated: 2026-07-13

Alexandry is a browser extension that shows a summary, citing papers, and recommended papers in the margin of academic paper pages (arXiv, PubMed, Semantic Scholar, Google Scholar). This policy explains what data it handles.

• No user accounts, no sign-up, no tracking, no analytics.
• No browsing history is collected. Alexandry only reads the specific academic paper page you're actively viewing when its content script runs.
• No data is sold or shared with third parties beyond what's needed to provide the feature (below).

| Data | Sent to | Why |
|---|---|---|
| Paper title + abstract (from the page you're viewing) | Anthropic API (api.anthropic.com) | To generate the 3-sentence summary. Sent using your own Anthropic API key. |
| Paper identifier (arXiv ID, PMID, DOI, or Semantic Scholar paper ID) | Semantic Scholar API (api.semanticscholar.org) | To fetch citing papers and recommendations. |
| Paper title | Semantic Scholar API (Google Scholar flow only) | To resolve a Google Scholar search result to a Semantic Scholar paper record. |
| Paper title, abstract, identifier, and generated summary | Alexandry's shared cache (alexandry-cache.alexandry.workers.dev), a Cloudflare Worker | Optional, best-effort deduplication layer: avoids repeating identical API calls/summaries across all extension users. If unreachable, the extension calls the APIs above directly instead. |

None of this data is linked to your identity — no account, no user ID, no IP-based tracking is performed by Alexandry's own backend. Standard web server logs (e.g. Cloudflare's own infrastructure logs) may incidentally record request metadata (like IP address) as part of normal internet routing; Alexandry does not read, store, or analyze these separately.


Your Anthropic API key and (optional) Semantic Scholar API key are stored only in your browser's local extension storage (chrome.storage.local), on your own device. They are never sent to Alexandry's own servers — only directly to Anthropic's and Semantic Scholar's own APIs, as authentication for your own requests.


Using Alexandry means data described above is sent to:
- Anthropic (for summaries)
- Semantic Scholar / Allen Institute for AI (for citations, recommendations, and paper search)

Refer to their respective privacy policies for how they handle data you send them.


Alexandry's full source code, including this shared cache backend, is open source. You can read exactly what the extension does, or run your own instance of the shared cache, at: github.com/Aaqui-nas/Alexandry.


Questions about this policy: open an issue on the GitHub repository.

This is the maintained source of this policy. The version published for store submissions is rendered at docs/privacy-policy.html (served via GitHub Pages) — keep both in sync when editing.