Lyrenth MCP server

Read the web through Lyrenth's index from any MCP client.

Exposes three tools:

• `read_url` turns a public web page into a clean AIDocument: stable

Markdown plus title, description, and structure, with the navigation and

boilerplate stripped. Your agent reads cleaned, low-token content instead of

raw HTML, and every result shows how many tokens it saved vs the raw page.

• `read_urls` does the same for up to 20 URLs in one batch call.
• `check_usage` reports your plan tier and credit usage.

Reads resolve through Lyrenth's cross-caller cache, and for verified domains

they return the publisher's canonical version.

Every tool declares all four MCP tool annotations (read-only,

non-destructive, idempotent, and open or closed world) as explicit

booleans, and the HTTP transport ships with a 14-test suite covering

its security posture.

Hosted, no install

If your MCP client supports remote HTTP servers with a custom header

(Claude and Cursor remote connectors do), there is nothing to run:

• URL: `https://api.lyrenth.com/mcp`
• Header: `Authorization: Bearer aiwk_your_key_here`

Same three tools, same key. The npx path below is for clients that

speak MCP over stdio, and for anyone who prefers a local process.

Setup

1. Get a free API key at (2,000 reads/month, no card).

2. Add the server to your MCP client.

Claude Desktop (one click)

Download `lyrenth-mcp.mcpb` from the

latest release and

open it. Claude Desktop installs the server and asks for your API key; there is

no config file to edit. The bundle carries the same code as the npm package.

To build it yourself: `./scripts/build-mcpb.sh`.

Claude Desktop / Cursor (manual config)

Add to your MCP config (Claude Desktop: `claude_desktop_config.json`):

{
  "mcpServers": {
    "lyrenth": {
      "command": "npx",
      "args": ["-y", "lyrenth-mcp"],
      "env": { "LYRENTH_API_KEY": "aiwk_your_key_here" }
    }
  }
}

Claude Code

claude mcp add lyrenth -e LYRENTH_API_KEY=aiwk_your_key_here -- npx -y lyrenth-mcp

Then ask your assistant to read a page, for example: *"Read

https://example.com/article and summarize it."* It will call `read_url` and get

the cleaned AIDocument back.

Tools

Configuration

Why read through Lyrenth

• Cleaner, cheaper. One stable AIDocument shape per URL; far fewer tokens

than raw HTML to a model.

• Cached across callers. The same URL fetched by many agents collapses to a

minimal number of origin fetches, so it is fast and origin-friendly.

• Canonical when verified. When a site's owner has verified with Lyrenth,

you get the version they authored, kept fresh by their change signal.

Privacy

The server sends exactly two things to Lyrenth's API (api.lyrenth.com): the

URLs you ask it to read, and your API key to authenticate and meter the call.

Nothing else leaves your machine: no page content you hold locally, no

conversation context, no telemetry. How Lyrenth handles fetched pages and

account data is covered by the privacy policy:

.

License

MIT. See LICENSE.

Local build

npm install
npm run build
LYRENTH_API_KEY=aiwk_... node dist/index.js   # speaks MCP over stdio

Part of the Lyrenth project. The AIDocument format is an

open contract; see .