MCP

Your knowledge, in every AI you use.

Sidelong speaks MCP, the open standard connecting AI apps to your work. Claude, ChatGPT, and Cursor can search your library and weigh in on your drafts.

Get started

Free to start

Works with

ClaudeChatGPTCursorand any MCP client
Connect your assistant

One URL, about two minutes

Bring your own AI

Connect once, ask anywhere.

Add Sidelong as a connector and your assistant finally knows what you know. It can pull up the podcast moment you half remember, give notes on a draft with your sources in front of it, and file the ideas you land on together back into Sidelong. Your account, your approval, revoke anytime.

01Ask what your library says about anything
02Get draft notes grounded in your own sources
03Ideas and links you send it land in Sidelong
ClaudeMCP
What does my library say about forgetting?

Your whole library

Every source, one search away.

Your assistant searches the same way Sidelong does: semantically, across books, videos, podcasts, articles, newsletters, tweets, highlights, and notes. Ask a question and it answers from your library, not the open internet.

01Semantic search across every format you save
02Full transcripts and article text on request
03Your highlights and notes weigh the most
Library0
PodcastMay 5, 2026
Summarizing

Essentials: Understand & Improve Memory Using Science-Based Tools

podcasts.apple.com/us/podcast/essentials-understand-improve-memory
YouTubeJul 7, 2026
Summarizing

How I Remember Everything I Read

youtube.com/watch?v=AjoxkxM_I5g
ArticleJul 8, 2026
Summarizing

How to Remember What You Read

fs.blog/remember-books

The tools

What a connected assistant can do.

01Search everything you've savedSemantic search across your whole library, ranked the way Sidelong ranks it: highlights and insights first.
02Open any sourcePull a save in full: the transcript or article text, its summary and key insights, and your highlights.
03Read your draftsAsk for feedback on a piece in progress, grounded in the sources your library holds.
04Save work backIdeas, notes, and links from the conversation land in Sidelong, saved and searchable for your next draft. It can even set up a project for you.

Free to start

Your knowledge is your advantage. Start using it better.

Sign up in a minute. Save your first source in one click.

Get started