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space.customjs/customjs-mcp

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Host static HTML pages, generate PDFs, screenshots, scrape JS sites, run sandboxed JavaScript.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http customjs-mcp 'https://mcp.customjs.space/customjs/mcp' --header 'x-customjs-api-key: <CustomJS API key (get one at https://www.customjs.space/integration/native-api/api-key)>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "customjs-mcp": {
            "type": "http",
            "url": "https://mcp.customjs.space/customjs/mcp",
            "headers": {
                "x-customjs-api-key": "<CustomJS API key (get one at https://www.customjs.space/integration/native-api/api-key)>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. CustomJS MCP Server
  2. Tools
  3. Get an API key
  4. Connect
  5. Hosting HTML pages
  6. Official MCP Registry
  7. Links
  8. License

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.
Endpointhttps://mcp.customjs.space/customjs/mcp
TransportStreamable HTTP
Authx-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

ToolWhat it does
customjs_host_html_pagePublish static HTML and get a public lp.customjs.space URL (upsert by name)
customjs_list_html_pagesList your hosted pages (name, url, pageId)
customjs_delete_html_pageDelete a hosted page by name or pageId
customjs_html_to_pdfConvert HTML to PDF (Nunjucks templating)
customjs_markdown_to_pdfConvert Markdown to PDF
customjs_screenshotCapture a full-page website screenshot
customjs_scrape_htmlExtract fully-rendered HTML (JavaScript-aware)
customjs_run_codeRun JavaScript in a secure sandbox
customjs_helpBuilt-in usage examples (topics: pages, pdf, screenshot, scraping, code)

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

/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.

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.

Frequently asked questions

What is space.customjs/customjs-mcp?

Host static HTML pages, generate PDFs, screenshots, scrape JS sites, run sandboxed JavaScript.

How do I install space.customjs/customjs-mcp?

It runs as a remote server. In Claude Code: claude mcp add --transport http customjs-mcp 'https://mcp.customjs.space/customjs/mcp' --header 'x-customjs-api-key: <CustomJS API key (get one at https://www.customjs.space/integration/native-api/api-key)>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does space.customjs/customjs-mcp need an API key?

Yes. It expects x-customjs-api-key, which you set in its configuration.

Is space.customjs/customjs-mcp open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains space.customjs/customjs-mcp?

It is published by customjs. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.