Rendex: Rendering API for Images, PDFs & Content Extraction

@copperline/rendex-mcp

MCP server for Rendex — render raw HTML, Markdown, or any URL to an image or PDF via AI agents using the Model Context Protocol.

Quick Start

Claude Desktop / Cursor / Windsurf (npx)

Add to your MCP client config:

{

"mcpServers": { "rendex": { "command": "npx", "args": ["-y", "@copperline/rendex-mcp"], "env": { "RENDEX_API_KEY": "your-api-key" } } } }

Where to add this:

Claude Code (CLI)

Add a .mcp.json to your project root with the same config above. Then restart Claude Code.

Important: Add .mcp.json to your .gitignore — it contains your API key.

Remote (zero-install, OAuth or API key)

Connect to the hosted server at https://mcp.rendex.dev/mcp — no install needed. It's fronted by OAuth 2.1 (authorization-code + PKCE S256), so OAuth-capable clients (ChatGPT, Claude, Cursor, the MCP Inspector) connect with no API key — you sign in with a one-time email code and each caller bills against their own Rendex plan and credit pool.

Clients that prefer a static key can still pass one directly:

{

"mcpServers": { "rendex": { "url": "https://mcp.rendex.dev/mcp", "headers": { "Authorization": "Bearer your-api-key" } } } }

Tools

rendex_screenshot

Render any webpage, raw HTML, or Markdown to an image or PDF.

"Take a screenshot of https://example.com"

"Capture the full page of https://news.ycombinator.com in dark mode" "Generate a PDF of https://github.com with A4 page size" "Capture https://amazon.de as seen from Germany" "Render this HTML invoice as a PDF" "Render this Markdown release note as a PDF"

Parameters:

rendex_extract

Extract clean reader-mode content from any webpage as Markdown, JSON, or HTML. Runs the same Chromium render pass as a screenshot, so it captures content after JavaScript runs — handling SPAs that fetch-only readers miss. Strips nav, ads, and boilerplate, returning the article body plus title, byline, and excerpt. Great for feeding page content to an LLM, summarization, or RAG ingestion.

"Extract the article text from https://example.com/post as Markdown"

"Pull the readable content from this SPA as JSON so I can summarize it"

Parameters:

rendex_render_link

Render a URL, raw HTML, or Markdown and get back a signed, hosted, edge-cached image URL instead of the bytes — ideal for dynamic OG images. Drop the URL into or an tag and Rendex serves a cached copy on every share. Takes the same parameters as `rendex_screenshot`, plus an optional expiresIn. Returns { url, expiresAt, format, cacheTtl }.

"Make me a hosted OG-image URL for this Markdown release note"

"Give me a render link for this HTML card that I can drop into og:image"

render_artifact

Turn Markdown or HTML into a branded, downloadable artifact — a PDF, a PNG, and a hosted share page — in one call. Ideal for agent outputs: reports, invoices, summaries, release notes, dashboards. Apply a logo, accent color, font, header, and footer; choose PDF page size/orientation/margins. Returns hosted URLs { pdfUrl, pngUrl, shareUrl, expiresAt } — no storage needed on your side. Each requested format costs 1 render credit.

"Turn this Markdown report into a branded PDF and PNG with our logo and an orange accent"

"Render this invoice HTML to a PDF and give me a share link that expires in a week"

Rendex Watch

Monitor a URL on a schedule and get notified when it changes — real-Chrome visual diff (with a highlighted overlay), an extracted-text diff, or both. Eight tools let an agent set up, inspect, edit, and tear down watches on the shared Rendex platform (one rdx_ key, one credit pool).

"Watch https://example.com/pricing for visual changes and alert my webhook"

"Before I save it, test whether you can capture #pricing on that page" "Show me the last few runs of watch — did anything change?"

| watch_delete | Delete a watc