qr-cow MCP server

An MCP server that exposes the customer-facing qr-cow.com API to any MCP-compatible AI client (Claude Desktop, Claude Code, Cursor, Zed, …).

Once connected, you can say things like:

"Make a QR code that goes to https://my-cafe.com/menu, call it Café menu" "Render a styled QR for https://acme.com in the ocean preset, 600px" "Show me which countries scanned my café menu last week" "Change the destination of the café menu QR to /menu-v2"

…and the assistant calls the API on your behalf.

1. Create a token

1. Sign in at https://qr-cow.com.
2. Go to Dashboard → API & MCP.
3. Click Create token. Give it a name like "Claude Desktop".
4. Copy the qrc_live_… value that appears. It's shown once.

2. Wire it into your MCP client

Claude Desktop / Claude Code

Add to ~/.claude.json (or your platform's equivalent config):

{
  "mcpServers": {
    "qr-cow": {
      "command": "uvx",
      "args": ["qr-cow-mcp"],
      "env": {
        "QRCOW_API_TOKEN": "qrc_live_..."
      }
    }
  }
}

Restart the client. You should see qr-cow tools listed.

Cursor / Zed

Same shape — pass command, args, and an env block with QRCOW_API_TOKEN. See their MCP docs for the exact key.

Self-hosted qr-cow

Set QRCOW_API_BASE (defaults to https://qr-cow.com/api) to point at your install:

"env": {
  "QRCOW_API_TOKEN": "qrc_live_...",
  "QRCOW_API_BASE": "https://your-host/api"
}

Tools

Develop locally

git clone https://github.com/qrcow/qr_cow_mcp.git
cd qr_cow_mcp
uv venv && source .venv/bin/activate
uv pip install -e ".[dev]"
pytest

# Try it out — auth doesn't matter for startup
QRCOW_API_TOKEN=qrc_live_local QRCOW_API_BASE=http://localhost:8080/api qr-cow-mcp

The server speaks stdio, so the easiest way to manually exercise it is through an MCP client.

Privacy & security

• The server is a thin pass-through: your token stays in your MCP client config and is only ever sent to the qr-cow API (or the QRCOW_API_BASE you configure) as a Bearer header.
• No telemetry, no third-party calls. Requests carry a User-Agent: qr-cow-mcp/<version> header so the API can distinguish MCP traffic.

Contributing & releases

• CONTRIBUTING.md — dev setup, style, how to send a PR.
• CHANGELOG.md — what changed in each release.
• RELEASING.md — how maintainers cut a release (tag → CI → PyPI).

License

MIT