@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?"

`renderParams` carries the per-check capture knobs (`fullPage` defaults to true, `selector`, `device`, `geo` (Pro+), plus noise controls `ignoreRegions`/`ignoreText`/`minTextChars`/`suppressWhilePresent` and `uaMode`). Interval floors are per-plan (Free 1440 / Basic 180 / Starter 60 / Pro 30 / Enterprise 5). Watch metadata + signed image URLs are returned as JSON text.

`rendex_account`

Check the account from inside the agent: which plan it's on, how many render credits have been used this month vs. the limit (and when it resets), the per-minute rate limit, and a one-tap upgrade link. Lets an agent answer "how much have I used?" or "how do I get more renders?" without sending the user to the dashboard. Read-only — costs no credits.

"How many Rendex renders do I have left this month?"
"What plan am I on, and how do I upgrade for more?"

Returns `{ plan, usage: { used, limit, remaining, unlimited, resetsAt }, rateLimitPerMinute, upgrade: { recommendedPlan, recommendedPlanCredits, upgradeUrl, manageBillingUrl } }`.

Data templating

Turn one reusable template into many documents. Pass a `data` object alongside `html`

or `markdown`, and Rendex renders the string as a logic-less Mustache

template before capture — `{{var}}` interpolation, `{{#items}}…{{/items}}` loops, and

nested `{{a.b}}` access. Great for invoices, reports, certificates, and OG cards.

"Render this HTML invoice template to a PDF, filling it with this data:
 Invoice {{number}}Total: {{total}}
 data = { number: 'INV-014', total: '$2,400' }"

`data` is valid only with `html` or `markdown` — combining it with `url` returns a

validation error.

Authentication

Get your API key at rendex.dev.

Set the `RENDEX_API_KEY` environment variable in your MCP client configuration.

Pricing

License

MIT — Copperline Labs LLC