QRX MCP Server

by qrx Your server? Claim it

answering

QRX is answering right now. Last checked 14 min ago. 394 installs a week from npm. It exposes 7 tools. Last commit 10 Oct 2026.

Turn a prompt and a link into a branded, print-ready QR code that always scans.

Installs per day peak 394 · avg 13

a month agotoday

Uptime history 4 days of history

4 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

1103 ms

Response time

average over 24h

394

Installs / week

npm and PyPI

Nothing serious here today

Today is the operative word: we check QRX every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mcp --transport http https://qrx.codes/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://qrx.codes/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mcp]
url = "https://qrx.codes/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://qrx.codes/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://qrx.codes/mcp"
    }
  }
}

This one needs environment variables set before it will start: QRX_API_KEY (Your QRX API key (qrx_…) from https://qrx.codes/developers/keys. Needed to use the tools; without it the server starts and lists them.). The author declared them in the registry entry; get the values from the project itself.

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Available tools 7

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

account

get_account

Use this when the user asks how many QR codes they can still make today, when the daily count resets, or what their QRX account can do. Do not use it to make or list codes.

change

change_qr_code_destination

Use this when the user wants an existing link QR code to open a different web address. Printed copies follow at once. It only works for link codes, and only if the account’s plan allows changing destinations. Do not use it to make a new code.

code

get_qr_code

Use this when you have a QR code’s id (from generate_qr_code or list_qr_codes) and need its status or finished image. While the code is still being painted it waits up to `wait` seconds (25 by default) for it to finish before answering, so call it again if it is still processing. Do not use it to make a new code.

codes

list_qr_codes

Use this when the user asks about QR codes they already have, newest first, a page at a time (pass nextCursor as cursor for the next page). Do not use it to make a code.

generate

generate_qr_code

Use this when the user wants a new QR code that is also a picture: a scannable code painted into art from a description, that opens a link (or joins a Wi-Fi network, if the account’s plan includes Wi-Fi codes). It starts the code and answers at once with its id while the picture is painted, which usually takes under a minute; then call get_qr_code with the id to wait for the image. Do not use it to look at, list or change codes that already exist. Each code counts against the user’s QRX allowance.

profile

get_profile

Use this when you need to know which QRX account is connected, for example to confirm it with the user. Do not use it for limits; use get_account.

styles

list_styles

Use this when the user wants to choose a look for a new QR code; pass a style id to generate_qr_code. Do not use it to make a code.

Endpoints

URL	Transport	State	Latency	Checked
https://qrx.codes/mcp	streamable-http	sign-in	1151 ms	14 min ago

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QRX — questions

Answers built from our own checks of this server.

What can QRX do?

It exposes 7 tools, read directly from the server on our last check. Among them: change_qr_code_destination, generate_qr_code, get_account, get_profile, get_qr_code, list_qr_codes and 1 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is QRX working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 1103 ms. The bar chart above shows every period we have measured.

How do I connect QRX?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to QRX?

No API key is involved. QRX answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is QRX?

It answers our handshake in 1103 ms on average, which is faster than 5% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use QRX?

The npm package @qrxcodes/mcp was installed 394 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is QRX open source?

Yes — it is published under the MIT licence and 2 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.