Understand anything you read, without leaving the page.
Highlight a sentence that doesn't click and Sidenote explains it in plain language, grounded in the passage and the text around it. Pick the reading level: like you're 12, like you're 16, or a layperson.
Aurora Rollout Runbook
Ask about the sample
Pick a question below. Sidenote answers from Aurora Rollout Runbook and cites the exact line so you can check it.
While the canary runs, Aurora watches three numbers. If any one of them crosses its limit, the new build is not promoted to the rest of the fleet.
- Speed: p95 checkout latency (the time that 95 in every 100 checkouts finish within) must stay at or below 450 milliseconds.
- Errors: the error rate must stay at or below 0.5 percent.
- Crashes: at least 99.8 percent of sessions must end without a crash.
Aurora checks all three every five minutes, on the Helios dashboard.
Source passage
Three metrics gate the canary automatically. Promotion is blocked if p95 checkout latency rises above 450 milliseconds, if the error rate exceeds 0.5 percent, or if crash-free sessions drop below 99.8 percent. The gates are evaluated every five minutes on the Helios dashboard.
Build the glossary
Sidenote pulls jargon, acronyms, and names out of the sample and defines each one in context.
Notes is in the full product
Save any cited passage from a chip and it lands here, ready to revisit.
A definition is only useful if it's true to the text.
A general chatbot explains the words; Sidenote explains your document. It reads the surrounding passages and grounds the explanation in them, so the answer reflects what this passage means in context, not a textbook definition that might not apply. Want clickable citations back to the source instead? That's what chat is for.
It works on everything you read (dense papers, contracts, runbooks and long articles) and across a whole collection of documents at once.
Plain language, in context.
Highlight the hard part
Select any sentence, term or paragraph in the document you're reading. No copy-paste, no leaving the page.
Pick how deep
Choose the level that fits: a quick plain-English gloss, a deeper walkthrough, or a like-you're-five version.
Read it in the side panel
The explanation lands in the side panel, grounded in the passage you selected and the text around it, so it reflects your document rather than a textbook.
AI explainer questions, answered
Stop guessing. Start understanding.
Add Sidenote to your browser, open any page, and highlight the sentence you keep re-reading.
No card required · Free plan forever