MCP · one connection, every assistant

Connect Claude, ChatGPT, and any AI assistant to The Crypt.

One click. Sign in once. Your assistant can search, save, and tag your links. No API keys to copy.

Things people ask it
“What did I save about Postgres last month?”
“Save this URL and tag it ai, agents”
“Find the duplicate links in my crypt and merge them”
“Give me a digest of what I read this week”
“Show me everything I tagged react that I haven’t opened yet”
“How many links do I have tagged hiring?”
“Tag my last three saves with the same tags as this one”
“What domains do I save from most?”
What it can do
Full access (default)
  • Search, list, and read links and tags
  • Save new links and tag them
  • Edit link details and tag names
  • Pull an AI digest of recent saves
  • Delete links, delete tags, and merge duplicates — always with a confirmation step
Read-only (optional)

Uncheck “Allow changes” when you connect and the assistant can look but not touch: search, list, read one link, list tags, get your overview stats, run a digest, and preview duplicates. Every write tool — save, edit, tag, delete, merge — refuses with a clear message.

Good for a shared assistant, a first try, or anyone who wants their crypt browsable but not editable.

Setup, per client

Every client talks to the same endpoint: https://mcp.getlinkcrypt.com/mcp

Claude.ai
  1. Go to Settings → Connectors → Add custom connector.
  2. Name it Link Crypt and paste in the URL below.
  3. Click Connect, sign in to Link Crypt if needed, and approve.
https://mcp.getlinkcrypt.com/mcp
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Claude Code

Run this in your terminal:

claude mcp add --transport http linkcrypt https://mcp.getlinkcrypt.com/mcp

Then run /mcp and follow the prompt to sign in and approve.

Claude Desktop
  1. Go to Settings → Connectors and add a custom connector.
  2. Name it Link Crypt and paste in the URL below.
  3. Connect, sign in, and approve.
https://mcp.getlinkcrypt.com/mcp
ChatGPT
  1. Go to Settings → Connectors → Advanced → Developer mode and turn it on.
  2. Click Create, name it Link Crypt, and paste in the URL below.
  3. For authentication choose OAuth, then sign in to Link Crypt and approve.
https://mcp.getlinkcrypt.com/mcp

Developer mode needs a ChatGPT plan that supports it (Plus, Pro, Business, Enterprise, or Edu).

‹›
Cursor

Add this to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "linkcrypt": {
      "url": "https://mcp.getlinkcrypt.com/mcp"
    }
  }
}
VS VS Code

Add this to .vscode/mcp.json:

{
  "servers": {
    "linkcrypt": {
      "type": "http",
      "url": "https://mcp.getlinkcrypt.com/mcp"
    }
  }
}
W Windsurf

Add this to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "linkcrypt": {
      "serverUrl": "https://mcp.getlinkcrypt.com/mcp"
    }
  }
}
G Gemini CLI

Run this in your terminal, then authenticate when prompted:

gemini mcp add --transport http linkcrypt https://mcp.getlinkcrypt.com/mcp
What's under the hood

14 tools, thin wrappers over the same REST API. Write tools need “Allow changes”; destructive ones always ask you to confirm.

ToolWhat it doesKind
get_overviewSnapshot of your library: totals, growth, top tags and domains.read
search_linksFull-text search across titles, descriptions, and saved page content.read
list_linksList and filter links by tag, domain, favorite, or sort order.read
get_linkGet one link’s full detail, including its tags.read
save_linkSave a new URL, with optional title, description, and tags.write
update_linkEdit a link’s title, URL, description, or favorite/read status.write
delete_linkPermanently delete a link.write · confirm
list_tagsList every tag with its link count.read
tag_linkAdd or remove tags on a link.write
update_tagRename, recolor, or redescribe a tag.write
delete_tagDelete a tag everywhere it’s used.write · confirm
generate_digestCryptie-generated digest of themes and habits in your recent saves.read
find_duplicatesPreview duplicate links or tags before touching anything.read
merge_duplicatesMerge duplicate links or tags into their canonical copy.write · confirm
Permissions & disconnecting

When you approve a connection you choose whether to check “Allow this assistant to make changes.” Leave it on for full read/write access, or turn it off for a read-only connection that can look but never save, edit, tag, or delete anything.

Every connected assistant shows up under Preferences → Connected AI assistants, with when it connected and when it was last used. Click Disconnect there, or disconnect from the client itself — either way, access is revoked immediately and the assistant needs a fresh sign-in and approval to reach your crypt again.

Where your data goes

Tool inputs and outputs pass through whichever assistant you're using — Anthropic, OpenAI, or another vendor — the same way any tool call does. Link Crypt only sees the calls your assistant actually makes, same as a REST API key. Details in our privacy policy.

Prefer the REST API? Read the API docs →

Questions
Does it cost extra? +

No. The MCP server is included with every plan and every trial, the same as the REST API.

Can it delete links? +

Only if you allowed changes when you connected, and only when it asks you to confirm first. It never deletes anything as a side effect of another request.

Does it work with Obsidian? +

Not directly — Obsidian doesn't speak MCP yet. See the Obsidian + AI guide for the pattern most people use instead.

What do I need to connect? +

A Link Crypt account with an active subscription or trial, and an MCP-capable client (Claude, ChatGPT, Cursor, VS Code, Windsurf, Gemini CLI, or anything else that speaks the standard remote MCP protocol). No API key to generate or paste.

Connect your assistant free