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Preview of cosmos by polarity lab

cosmos by polarity lab by Polarity Lab

Ships meaningful pages from your browser history into your cosmos graph. Local filtering, no analytics, single endpoint.

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Extension Metadata

About this extension
Initial release. WebExtension that ships meaningful page history to https://cosmos.polarity-lab.com, the user's own cosmos graph. Filtering runs client-side via shared/filter-rules.json(navigational noise, the user's own domains, search-result URLs, untitled tabs are all dropped before the network call). Hourly chrome.alarms sync, with a one-week lookback on first install. Per-page payload is URL, title, hostname, last-visit timestamp, visit count, and the static string "web" as source. No page bodies, cookies, form data, or request headers are
transmitted. The cosmos MCP key lives in chrome.storage.local and is
sent only as the X-MCP-Key header to cosmos.polarity-lab.com.
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Permissions and data

Required permissions:

  • Access browsing history

Optional permissions:

  • Access your data for cosmos.polarity-lab.com

Required data collection, according to the developer:

  • Browsing activity
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More information
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Version
0.1.5
Size
23.09 KB
Last updated
14 days ago (May 21, 2026)
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  • Other
License
MIT License
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