AI bookmark search

Bookmark anything.
Find everything.

ContextBolt captures your bookmarks from X, Reddit, and LinkedIn into one place, then makes every one of them searchable. Find what you saved in seconds.

Add to Chrome Read the MCP guide
Local-first · search on your device
MCP-native · one config line
Free · 150 bookmarks
Works with
Claude Desktop
Claude Code
Cursor
Windsurf
Cline
Zed
The problem

Three platforms.
Zero search.

You keep saving things because they are valuable. Every platform makes it impossible to find them again. ContextBolt is the search layer the social web should have shipped with.

X / Twitter

Bookmark search is broken.

Keyword-only. No semantic search. Six months in, your folder is a graveyard.

Reddit

Saved posts are a black hole.

There is no real search for saved posts. Scroll forever, or accept the loss.

LinkedIn

Good posts disappear.

No clean way to bookmark in-feed. By the time it resurfaces, you have forgotten it.

The system

Three steps.
All automatic.

Install, browse, build. Capture happens passively. AI does the indexing. Your agents do the rest.

01Capture

Install once.
Visit your bookmarks. Done.

Chrome extension, local-first. Visit X or Reddit and ContextBolt captures everything in the background. On LinkedIn, a save button appears on every post. No API keys, no imports, no friction.

x.com/i/bookmarks
Andrej Karpathy@karpathy
The best way to learn AI is to build things. Start with a simple project.
Guillermo Rauch@rauchg
Ship fast, learn faster. The gap between good and great is iteration speed.
ContextBolt · sync complete
847
02Cluster

AI tags and
clusters everything.

Every bookmark gets topic tags and an embedding. Clusters form automatically. Patterns in what you save become legible, to you and to anything you connect.

@karpathy3h
The best way to learn AI is to build things. Start with a simple project, understand fundamentals.
AI / ML learning advice fundamentals
embed · cluster
AI / ML 234 Web Dev 189 Startups 156 Design 98
03Connect

Serve your bookmarks
over MCP.

Pro users get a personal MCP endpoint. One config line connects Claude, Cursor, Windsurf, Cline, and Zed, anything that speaks the protocol. Your bookmarks become live context, mid-conversation.

▸ what did I save about rate limiting?
@rauchg, Scaling Vercel's API
How we designed the API layer for zero-downtime deploys at scale.
0.94
u/backend_eng, Token bucket vs sliding window
A comparison with benchmarks for high-traffic APIs.
0.91
Sarah Chen, API design at Stripe
Versioning, backwards compatibility, and developer experience.
0.88
How it is built

Local-first.
By design.

Search runs in your browser, not our cloud. Here is what that means in practice, and what we deliberately keep off our servers.

On our servers
0
Bookmarks stored in our cloud. Everything lives in your browser by default.
MCP tools
5
Search, browse clusters, pull recent saves, and write new ones. Callable by any agent.
Platforms
3
X, Reddit, and LinkedIn bookmarks captured into one searchable library.
Config line
1
One URL connects your library to Claude, Cursor, or any MCP client.
MCP integration

Your library, inside every agent you use.

Model Context Protocol is the open standard for giving agents access to live data. ContextBolt Pro gives you a personal MCP endpoint. One config line, and your bookmarks become context.

Not an export. Not a chat history. Live, queryable context.

Your AI pulls from your bookmarks in real time, mid-conversation. Nothing to paste. Nothing to upload. The agent already knows what you have found important.

ContextBolt exposes five tools: search_bookmarks, list_clusters, get_cluster_bookmarks, get_recent_bookmarks, and save_bookmark. Every MCP-compatible client can call them.

Claude Desktop Claude Code Cursor Windsurf Cline Zed Any MCP host
~/.claude/mcp.json 
// Add this once. Restart your client.
// Your bookmarks are now context.

{
  "mcpServers": {
    "bookmarks": {
      "url": "https://api.contextbolt.app/mcp/<your-token>"
    }
  }
}
Honest positioning

What it is.
What it isn't.

Building a category is mostly about saying no to adjacencies. ContextBolt is a context layer. It is not a read-it-later, not a CRM, not a chat client. Clarity matters more than reach.

What it is
The only tool capturing bookmarks from X, Reddit, and LinkedIn into one searchable knowledge layer
An AI knowledge base that only knows what you have personally curated
The first Chrome extension with an MCP endpoint for social bookmarks
Local-first. Your data stays on your device by default
What it isn't
Not a read-it-later app. We do not store full articles
Not a general AI assistant. We organize and surface, we do not generate
Not a Twitter or Reddit client. We sit alongside, not on top
Not a note-taking app. We complement Obsidian, Notion, whatever you already use
Pricing

Free to start.
Pro when you're ready.

Basic does the work for one person. Pro adds the MCP endpoint, unlimited bookmarks, and encrypted cloud sync.

Basic
$0
Up to 150 bookmarks. Free forever.
  • X and Reddit auto-capture, LinkedIn save button
  • AI tagging and topic clustering
  • Local-first semantic search
  • Personal MCP endpoint
  • Encrypted cloud sync
Add to Chrome
Pro
$6/ month
Unlimited bookmarks. One personal MCP endpoint.
  • Everything in Basic
  • Unlimited bookmarks
  • Personal MCP endpoint for Claude, Cursor, Windsurf, Cline
  • Encrypted cloud sync
  • Priority email support
See the Pro plan
FAQ

Common
questions.

If something isn't answered here, email [email protected] and we will get back to you.

What is ContextBolt?
ContextBolt is a Chrome extension that captures your bookmarks from X (Twitter), Reddit, and LinkedIn into one searchable AI knowledge base. It automatically generates topic tags and clusters for every bookmark using AI. Pro users get an MCP endpoint that connects their bookmarks to AI tools like Claude Desktop, Cursor, and Windsurf as live context.
How much does ContextBolt cost?
ContextBolt has a Basic tier that is free, with 150 bookmarks, AI tagging, topic clustering, and semantic search. Pro costs $6 per month and includes unlimited bookmarks, a personal MCP endpoint, and encrypted cloud sync.
How does ContextBolt access my bookmarks?
ContextBolt is a Chrome extension that runs locally in your browser. For X/Twitter, it intercepts the bookmarks API when you visit your bookmarks page. For Reddit, it reads your saved posts. For LinkedIn, it adds a save button to feed posts. No passwords or API keys needed.
Is my data stored on your servers?
All bookmark data stays in your browser by default. The only data sent to our servers is text content for AI processing. Pro users can optionally enable encrypted cloud sync.
What platforms are supported?
X (Twitter) and Reddit bookmarks are captured automatically when you visit your bookmarks page. For LinkedIn, ContextBolt adds a save button to feed posts so you can bookmark content as you scroll. Everything is stored and searchable in one place. Works with Chrome, Brave, Arc, Edge, and any Chromium browser.
How is this different from Twitter's bookmark search?
Twitter's search is basic keyword matching on one platform. ContextBolt gives you AI-powered semantic search across X, Reddit, and LinkedIn at once. Plus an MCP endpoint that connects your bookmarks to any AI agent.
What is the MCP endpoint?
MCP (Model Context Protocol) is an open standard that lets AI agents access external tools and data as live context. ContextBolt Pro gives you a personal MCP endpoint. Add one line to Claude Desktop, Claude Code, Cursor, Windsurf, or any MCP-compatible client and your AI can search your entire bookmark collection mid-conversation.
Can I use ContextBolt for free?
Yes. The Basic tier is free and includes 150 bookmarks with AI tagging, topic clustering, and semantic search. No credit card needed. Pro is $6/month for unlimited bookmarks, MCP endpoint, and cloud sync.
Start free, upgrade when you need MCP

The context layer
your agents are missing.

Install once. Your bookmarks become a searchable, queryable, AI-native library. From day one.

Add to Chrome See pricing