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CustomJS MCP Server

Official
by customjs
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Remote

CustomJS MCP Server

A remote Model Context Protocol server that gives AI agents web superpowers — host HTML pages on a public URL, generate PDFs, capture screenshots, scrape sites, and run sandboxed code — using your own CustomJS API key.

Endpoint

https://mcp.customjs.space/customjs/mcp

Transport

Streamable HTTP

Auth

x-customjs-api-key header (per-user API key)

There's nothing to install or self-host — it's a hosted remote MCP server. Bring your CustomJS API key and connect.

Tools

Tool

What it does

customjs_host_html_page

Publish static HTML and get a public lp.customjs.space URL (upsert by name)

customjs_list_html_pages

List your hosted pages (name, url, pageId)

customjs_delete_html_page

Delete a hosted page by name or pageId

customjs_html_to_pdf

Convert HTML to PDF (Nunjucks templating)

customjs_markdown_to_pdf

Convert Markdown to PDF

customjs_screenshot

Capture a full-page website screenshot

customjs_scrape_html

Extract fully-rendered HTML (JavaScript-aware)

customjs_run_code

Run JavaScript in a secure sandbox

customjs_help

Built-in usage examples (topics: pages, pdf, screenshot, scraping, code)

Related MCP server: PixelCheck

Get an API key

Create a free key at https://www.customjs.space/integration/native-api/api-key. Your key is sent per request as the x-customjs-api-key header and is never stored by the connector.

Connect

Claude Code — plugin (recommended)

/plugin marketplace add customjs/claude-plugin
/plugin install customjs@customjs-tools

You'll be prompted only for your API key. (See customjs/claude-plugin.)

Claude Code — without the plugin

claude mcp add --transport http \
  --header "x-customjs-api-key: <your-key>" \
  customjs https://mcp.customjs.space/customjs/mcp

Claude Desktop (JSON config via mcp-remote)

{
  "mcpServers": {
    "customjs": {
      "command": "npx",
      "args": [
        "-y", "mcp-remote",
        "https://mcp.customjs.space/customjs/mcp",
        "--header", "x-customjs-api-key:${CUSTOMJS_API_KEY}"
      ],
      "env": { "CUSTOMJS_API_KEY": "your-key" }
    }
  }
}

Other MCP clients (Cursor, VS Code, etc.)

Add a remote / HTTP MCP server pointing at https://mcp.customjs.space/customjs/mcp with the header x-customjs-api-key: <your-key>.

Hosting HTML pages

customjs_host_html_page publishes static HTML and returns a public https://lp.customjs.space/<shortId> URL. Hosting again with the same name updates the existing page (upsert by name).

Note: the public URL is served via CloudFront, so immediately after an update it may briefly show the previous content until the cache refreshes.

Official MCP Registry

This server is published to the official MCP Registry as space.customjs/customjs-mcp (DNS-verified on customjs.space) — see server.json. For how it's published and the full directory list, see PUBLISHING.md.

Links

License

The contents of this repository (documentation and registry manifest) are released under the MIT License. The CustomJS service itself requires a valid API key and is governed by CustomJS's terms of service at https://www.customjs.space.

This server cannot be installed

A
license - permissive license
-
quality - not tested
C
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

Resources

Unclaimed servers have limited discoverability.

Looking for Admin?

If you are the server author, to access and configure the admin panel.

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