rasterly

Official

by rasterly-dev · JavaScript

Web toolkit for AI agents: read any URL as Markdown, screenshot, extract data, or crawl a site.

rasterly-mcp (MCP Server)

rasterly-mcp is an MCP server for AI agents that can access the live web. It can read a URL as Markdown, take a screenshot, extract data, or crawl a site. It is backed by rasterly, a headless-Chromium rendering API, and works in any MCP client.

🛠️ Key Features

Read any URL as clean, LLM-ready Markdown (rendering JS; stripping nav/ads/boilerplate)
Capture a screenshot of a URL
Extract data and crawl a site

🚀 Use Cases

Turn web pages into Markdown for downstream processing by an agent
Capture visual evidence of a page via screenshot
Gather information across multiple pages through crawling

⚡ Developer Benefits

Provides tools usable in any MCP client (e.g., Claude Desktop, Claude Code, Cursor, Windsurf)
Produces “main content” Markdown suitable for reading URLs in agent workflows

⚠️ Limitations

Specific tool details beyond read_url and capture_url are only partially shown in the provided excerpt

README.md2 KBView on GitHub

rasterly-mcp

Give any AI agent eyes and a reader for the live web. An MCP server that lets your agent turn a URL into clean Markdown, a screenshot it can actually see, or a PDF — backed by rasterly, a real headless-Chromium rendering API.

Works in any MCP client: Claude Desktop, Claude Code, Cursor, Windsurf, and others.

Tools

Tool	What the agent gets
`read_url`	The page's main content as clean, LLM-ready Markdown — JS is rendered, nav/ads/boilerplate stripped. Use it to read a URL.
`capture_url`	A screenshot returned as an image, so the agent can see the page (layout, charts, anything visual). `full_page` optional.
`url_to_pdf`	A print-ready PDF of the page (base64 resource).

Why an agent wants this: a plain fetch() gets you raw HTML that a modern, JS-rendered site won't even populate. read_url runs a real browser and hands back just the article — far fewer tokens, far more signal.

Install

Get a key at rasterly.dev (free tier: 100 renders/month), then add the server to your MCP client.

Claude Desktop / Claude Code / Cursor — add to your MCP config (claude_desktop_config.json, .mcp.json, or the client's MCP settings):

json

{
  "mcpServers": {
    "rasterly": {
      "command": "npx",
      "args": ["-y", "rasterly-mcp"],
      "env": { "RASTERLY_API_KEY": "sk_live_your_key" }
    }
  }
}

Restart the client. Your agent now has read_url, capture_url, and url_to_pdf.

Try it

Ask your agent things like:

"Read https://news.ycombinator.com and summarize the top 3 posts."
"Screenshot stripe.com and tell me what the hero section says."
"Turn this docs page into a PDF."

Config

Env var	Default	Notes
`RASTERLY_API_KEY`	–	Your rasterly key (sent as `X-Api-Key`).
`RASTERLY_API_URL`	`https://rasterly-production.up.railway.app`	Override to point at a self-hosted rasterly.

Run standalone

bash

RASTERLY_API_KEY=sk_live_… npx -y rasterly-mcp

MIT · built on rasterly

Install

Configuration

Environment variables

RASTERLY_API_KEYrequiredsecret

Your rasterly API key (get one free at https://rasterly.dev). Sent as the X-Api-Key header.

RASTERLY_API_URL

Override the rasterly API base URL to point at a self-hosted instance.

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "rasterly-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "rasterly-mcp@0.2.1"
      ],
      "env": {
        "RASTERLY_API_KEY": "<YOUR_RASTERLY_API_KEY>",
        "RASTERLY_API_URL": "<YOUR_RASTERLY_API_URL>"
      }
    }
  }
}

rasterly-mcp (MCP Server)

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

rasterly-mcp

Tools

Install

Try it

Config

Run standalone

Install

Configuration

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