Marginalia
ExtensionTools
Overview
AI reading partner that observes how you read, then opens a conversation with an observation, an insight, and one question.
Marginalia is an AI reading companion. It observes how the user reads the current page (dwell time, scroll speed, engagement) and, on request, opens a sidebar conversation that returns an observation, an insight, and one question about what they were reading — using the user's own Anthropic API key.
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Details
- Version1.1.0
- UpdatedJune 11, 2026
- Size124KiB
- LanguagesEnglish (United States)
- Developer
Email
Johnwalker721@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
Manage extensions and learn how they're being used in your organization
Marginalia has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
Marginalia handles the following:
User activity
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes