# LinkCrypt

> Your personal link library with a REST API — searchable and writable by humans and AI agents alike.

LinkCrypt is a private bookmark manager and link library built for modern knowledge workflows. It provides a full REST API that lets AI agents (Claude, Manus, OpenAI-based tools) search, save, and organize links programmatically — making it the natural URL layer alongside Obsidian (notes) and AI assistants (reasoning) in a personal knowledge management stack.

## What LinkCrypt does

- Saves and organizes links with unlimited color-coded tags
- Provides full-text search across titles, descriptions, domains, and saved page content
- Exposes a REST API so AI agents can query and write to the library without any UI
- Imports existing bookmark libraries from Pocket, Instapaper, Raindrop.io, browser exports, and 10+ services
- Keeps all data private — no social features, no ads, no data sharing
- Runs as a web app with a Chrome extension for one-click saving while browsing

## REST API

Base URL: https://getlinkcrypt.com/api/v1  
Auth: Bearer token (per-user API key)

Key endpoints:
- GET /links — list/filter links (by tag, domain, keyword, favorite)
- GET /search?q= — full-text search including saved page body content
- POST /links — save a new link (url, title, description, tags[])
- PATCH /links/:id — update title, description, or favorite status
- GET /tags — all tags with link counts
- POST /links/:id/tags — add a tag to a link
- GET /analyze/stats — library overview (totals, top tags, top domains, growth)
- POST /analyze/digest — AI-generated insights across the library (themes, habits, connections)

## Integration patterns

**With Claude or other AI agents:** Provide the API base URL and a bearer token. The agent can then search the library during research, save discovered URLs with relevant tags, and surface related links when working on a topic. No plugins or special tooling required — plain HTTP calls work.

**With Obsidian:** Use the API to pull relevant saved links into notes (via Obsidian plugins that support HTTP calls, or via a connected AI agent). Have an AI assistant automatically save URLs it encounters during research sessions directly into your LinkCrypt library, tagged and organized as it goes.

**As a standalone library:** Use the Chrome extension to save links while browsing, then use the web app or API to retrieve them with powerful search syntax: `tag:ai`, `domain:github.com`, `tag:python domain:arxiv.org`.

## Pricing

- Free trial included
- $3.99/month or $19.99/year for full access

## Pages

- [Home](https://getlinkcrypt.com/)
- [REST API reference](https://getlinkcrypt.com/api)
- [Preferences & API keys (sign in)](https://getlinkcrypt.com/preferences)
- [Claude integration](https://getlinkcrypt.com/integrations/claude)
- [ChatGPT integration](https://getlinkcrypt.com/integrations/chatgpt)
- [Obsidian integration](https://getlinkcrypt.com/integrations/obsidian)
- [About](https://getlinkcrypt.com/about)
- [Pricing](https://getlinkcrypt.com/subscription)
- [Help & search syntax](https://getlinkcrypt.com/help)
- [Import guide](https://getlinkcrypt.com/import-guide)
- [Pocket migration guide](https://getlinkcrypt.com/pocket-replacement)
- [Instapaper alternative](https://getlinkcrypt.com/instapaper-alternative)
- [Privacy policy](https://getlinkcrypt.com/privacy)
- [Sign up](https://getlinkcrypt.com/auth)