Browser Use
Lets AI do web tasks for you, such as filling forms, searching and extracting data, in the maker’s cloud browsers or on your computer.
Computer or cloud✓ browser-use.com
Customjs MCP
Overview
Description from the maker (original English)
Host static HTML pages, generate PDFs, screenshots, scrape JS sites, run sandboxed JavaScript.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi2 of 2 passedChecked from public information; code not scanned yet
- UsageiVery new★ 0
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs in the cloud
- Transport: Streamable HTTP
- Category: Web & browsers
- You need to fill in: x-customjs-api-key
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 2 of 2 passed
- Runs on the maker’s server: what you ask it goes through their server.
- You fill in yourself:
x-customjs-api-key
Values marked secret are keys to your account. Never share them or paste them into a chat.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Run this in your terminal
claude mcp add --transport http customjs https://mcp.customjs.space/customjs/mcp --header 'x-customjs-api-key: your-value'Fill in the empty values before running it.
Or copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"customjs": {
"url": "https://mcp.customjs.space/customjs/mcp",
"headers": {
"x-customjs-api-key": "your-value"
}
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"customjs": {
"type": "http",
"url": "https://mcp.customjs.space/customjs/mcp",
"headers": {
"x-customjs-api-key": "your-value"
}
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Your choice stays on this device in a cookie; no account needed.
Values you fill in
x-customjs-api-keysecret required HTTP headerCustomJS API key (get one at https://www.customjs.space/integration/native-api/api-key)
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Which apps can use it
Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.
Connect over the internet in
ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast
Related guides
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 11, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified against the domain customjs.space (the registry checks domain ownership)
- ✓ Pass
Still maintained
Code last changed 5 months ago
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- … Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Web & browsersi
- More stars than 0% of the other 1448 servers in this category
- Published to the registry more recently than 11% of the other 1448 servers in this category
- Basic checks equal to or better than 100% of the other 1448 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Customjs MCP safe?
It passed 2 of 2 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
You need to fill in: x-customjs-api-key
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed 5 months ago, and the latest version (1.0.0) reached the registry 5 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Browser Use, Scrapling MCP Server, Chrome DevTools MCP
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Scrapling MCP Server
Web scraping with stealth HTTP, real browsers, and Cloudflare bypass. CSS selectors supported.
Runs on your computer
Chrome DevTools MCP
Lets AI use Chrome’s developer tools to inspect pages, find what makes them slow and spot errors. Made by the Chrome DevTools team.
Runs on your computer
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
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) |
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: " \ 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: .
Hosting HTML pages
customjs_host_html_page publishes static HTML and returns a public https://lp.customjs.space/ 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
- Website — https://www.customjs.space
- Get an API key — https://www.customjs.space/integration/native-api/api-key
- Claude Code plugin — https://github.com/customjs/claude-plugin
- MCP protocol — https://modelcontextprotocol.io
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.