AI second brain for links

AI-organized bookmarks.
Still yours to search.

Built-in AI suggests tags when you save a link—using the page context and the tag vocabulary you already use—so large libraries stay sorted without endless manual filing. This is a link library for retrieval, not a read-later reading app.

Plug the same library into your second brain or agents: LinkCrypt's full REST API works with Obsidian, Claude, Manus, OpenClaw, Paperclip, and any tool that can make an HTTP request. In the app, tag: and domain: search helps you surface the right source in seconds.

AI-suggested tags • Advanced search • Full REST API • Unlimited tags • Chrome extension • Built for huge libraries

Start Organizing Your Links Import Your Bookmarks Explore the API →
Cryptie says
Your links belong to you. Export anytime, API always on.
Link Crypt interface showing saved links with tags, search functionality, and clean dark UI

Clean interface with powerful search, tags, and link previews

What it does
AI

AI-suggested tags

When a link is saved or enriched, built-in AI proposes tags from page context and prefers tags you already use—so new saves slot into your system instead of piling up untagged.

Search

Search that scales

Use tag:ai, domain:github.com, title:tutorial, and description:api filters. Built for libraries in the hundreds or thousands.

API

Second brains & agents

A full REST API feeds Obsidian, Claude, Manus, OpenClaw, Paperclip, or any HTTP client—the same library your Chrome extension and web app use. Search, save, and manage tags with no scraping.

Browser extension
Chrome / Edge / Brave

Save links instantly from any page

One-click saving from any webpage. Add tags, notes, and organize as you browse—works seamlessly across all your devices.

Add to Chrome — It's Free
Link Crypt Chrome Extension showing the save popup with URL, tags input, and save button
Who it's for

People who collect lots of links and need them back on demand — not buried in folders or generic bookmark search.

Journalists & writers

Source lists, interview refs, background reading — tag by beat or story, then run domain: or tag: when you're on deadline.

Product & UX

Competitors, specs, user research — keep everything labeled and pull tag:competitor or domain: in one search.

Analysts & researchers

Datasets, papers, dashboards — large libraries stay usable when filters combine (e.g. tag:ai domain:arxiv.org).

PKM + AI stacks

Obsidian for notes, your AI for reasoning, LinkCrypt for URLs — wire the API so agents save and fetch links without copy-paste.

How it works
1
Sign up & import

Create your account with email or magic link. Import bookmarks from Chrome, Safari, Firefox, or Edge, Pocket, Instapaper, or 10+ other services in minutes.

2
Save, tag & search

Use the Chrome extension or web app to capture links, tag as you go, then search with tag:, domain:, and other filters.

3
Ask your AI agent

Point Claude, Manus, or any HTTP-capable assistant at the API: search, save, and sync tags from your editor or agent workflow — the same library, no workarounds.

Integrations
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Works with any HTTP tool. See the API docs →

Questions
What makes Link Crypt different from other bookmark managers? +

Link Crypt is a link library built for finding what you saved: advanced filters like tag:ai domain:github.com, unlimited tags, a full REST API for Obsidian and AI agents, and full export. Classic read-later apps often optimize for reading layout inside the app; we optimize for retrieval at scale.

Why not just use browser bookmarks? +

Built-in bookmarks break down when you have hundreds or thousands of URLs: shallow search, awkward folders, no portable query syntax, and no API for agents or automation. Link Crypt gives you structured tags, tag:/domain: search, cross-device sync, and programmatic access — so large libraries stay usable.

Who is Link Crypt for? +

Anyone who saves a lot of links and needs them back fast — journalists and writers, product and UX folks, analysts and researchers, and people wiring links into Obsidian, agents, or a second brain. If "where did I save that?" is a recurring question, Link Crypt is built for you.

Can I import my existing bookmarks? +

Yes! Link Crypt supports imports from Pocket, Instapaper, Raindrop.io, Pinboard, GoodLinks, Readwise, browser bookmarks, and 10+ other services. All tags and metadata are preserved during import. Exporting from your browser? Follow the HTML bookmark export guide.

How does Link Crypt's advanced search work? +

Use precise filters like tag:javascript, domain:github.com, title:tutorial, or description:api. Combine filters for surgical precision: tag:ai domain:arxiv.org finds all AI research papers instantly.

Is my data private and exportable? +

Absolutely. No social features, no ads, no data mining. Your links stay completely private. Export to CSV or JSON anytime—we'll never hold your data hostage.

Does LinkCrypt work with Claude or other AI assistants? +

Yes — the full REST API is available on all plans. You (or your agent) can search links, save new ones, and manage tags programmatically with a simple bearer token. Many users connect it directly to Claude Code, Claude.ai agents, or tools like Manus and OpenAI-based assistants.

Frequently Asked Questions

Which alternatives offer robust tagging and search for link management?
Link Crypt stands out for robust tagging and search at scale, plus built-in AI-suggested tags when you save or enrich links. It is a link library focused on retrieval — not a read-later reading app. You get unlimited tags and advanced syntax: tag:keyword (e.g. tag:ai), domain:website (e.g. domain:github.com), title:text, description:text, and combined queries like tag:ai domain:github.com. Imports from Pocket, Instapaper, and other services preserve tags. A full REST API fits second-brain stacks (Obsidian) and AI agent workflows (OpenClaw, Paperclip, Claude, Manus, and more).
Who is Link Crypt for?
People who save hundreds or thousands of links and need to find them again — journalists, writers, product managers, UX researchers, analysts, and anyone using AI-organized bookmarks or a second-brain stack (Obsidian, agents, automation). If browser bookmarks or generic search stop working as your library grows, Link Crypt is built for that job.
Why use Link Crypt instead of browser bookmarks alone?
Browser bookmarks are fine for a small set of favorites. They strain when the count gets large: limited search, folder sprawl, no tag:/domain: query syntax, and no API for assistants or automation. Link Crypt adds structured tags, fast filtered search, sync across devices, export, and programmatic access — so big libraries stay manageable.
How do I import my existing bookmarks to Link Crypt?
Link Crypt supports imports from Pocket, Instapaper, Raindrop.io, Pinboard, GoodLinks, Readwise, browser bookmarks (Chrome, Safari, Firefox, Edge), and 10+ other services. Visit getlinkcrypt.com, create an account, click Import, select your service format, and upload your export file. Link Crypt preserves all URLs, titles, tags, descriptions, timestamps, and favorite status. For HTML exports from Chrome, Safari, Firefox, or Edge, use the dedicated browser bookmark import guide.
How do I export bookmarks from Chrome, Safari, Firefox, or Edge for Link Crypt?
Each browser can save an HTML bookmark file. Chrome: Bookmarks and lists → Bookmark Manager → menu → Export bookmarks. Safari (Mac): File → Export → Bookmarks. Firefox: Manage bookmarks (Ctrl+Shift+O or ⌘⇧O) → Import and Backup → Export Bookmarks to HTML. Edge: Settings and more → Favorites → More options → Export favorites. In Link Crypt, open Import Links and choose Browser Bookmarks (Chrome/Safari/Firefox/Edge). Full walkthrough: getlinkcrypt.com/browser-bookmarks-import.
How does Link Crypt compare to read-later apps for privacy?
Link Crypt is a private link library (optimized for saving and finding URLs). Read-later apps often emphasize in-app reading experience; we emphasize retrieval, export, and API access. Privacy highlights: Data ownership — full-library export in CSV and JSON anytime. No social features — your library is yours only. Auth — email/password or magic link, no Apple or Google required. Database security — Row-Level Security in PostgreSQL. No ads or data mining.
Which cross-platform tools sync links without requiring Apple ID?
Link Crypt is fully cross-platform and works on Windows, Mac, Linux, Android, iOS, and ChromeOS without requiring an Apple ID, iCloud account, or any vendor-specific ecosystem. The web app works in any browser, a Chrome extension is available for Chromium browsers, and an iOS native app provides a Share Extension. Authentication uses email/password or magic link. Links sync in real-time across all devices.
How much does Link Crypt cost compared to Instapaper and other bookmark managers?
Link Crypt costs $3.99 per month or $19.99 per year, making it significantly more affordable than competing services. Compared to Instapaper Premium which costs $5.99/month or $59.99/year, Link Crypt saves you 33% on monthly plans and 67% on annual plans. You get unlimited link storage, advanced tagging, powerful search syntax, full data export, and cross-platform sync. Free trial available with no credit card required.
What is the most affordable bookmark manager with advanced search?
Link Crypt is one of the most affordable bookmark managers with professional features at $3.99/month or $19.99/year. Link Crypt offers unlimited link storage, advanced tagging with search syntax, powerful filters, and full data export at a price much lower than alternatives like Instapaper Premium ($59.99/year). Import from any service is free and preserves all your tags, links, and metadata.