Download · v0.1.2

Catflap for macOS

Choose your system

The app runs on the computer whose tools you want to share.

There is no build for macOS in v0.1.2 yet. The command line runs nearly everywhere, or see the releases page.

What happens next

Open the download

Install it like any other app for your system.

Sign in

The app opens your browser once. You stay signed in afterwards.

Start sharing

Pick what your AI may use; the app gives you the address to paste.

Requirements

Windows

Windows 10 (1809) or 11, 64-bit or ARM. The sandbox needs Podman Desktop; the app shows you how to get it.

macOS

macOS 12 or newer on Apple silicon. Drag the app to Applications; the first time, right-click it and choose Open.

Linux

Needs GTK 4 and WebKitGTK 6: Ubuntu 24.04, Debian 13, Fedora 39 or newer. Older systems: use the command line.

All downloads

v0.1.2 · released 2026-11-03 · all versions · open source under the MIT license

System	Format	Architecture	Size	Download
macOS	Archive (tar.gz)	Apple silicon	4 MB	Download
Linux	Archive (tar.gz)	64-bit	5 MB	Download
Linux	Archive (tar.gz)	ARM 64-bit	4 MB	Download
Windows	Archive (zip)	64-bit	5 MB	Download
Windows	Archive (zip)	ARM 64-bit	4 MB	Download

Verify a download (optional)

Compare the file's SHA-256 with checksums.txt:

Terminal

$ sha256sum FILE

checksums.txt is signed with the Catflap release key, cosign.pub. To check that the sums are ours, download the key, checksums.txt and its signature, then run cosign:

Terminal

$ cosign verify-blob --key cosign.pub --bundle checksums.txt.sigstore.json checksums.txt

For servers and scripts

Command line quick start

Unpack the archive and put catflap on your PATH. On a machine without a browser, catflap login --device shows a code to confirm on your phone or laptop.

Unattended machine? Use an API key →

Terminal

# sign in once (opens your browser)
$ catflap login --gateway https://catflap.uni-obuda.hu
# share any MCP server under the name "weather"
$ catflap enter --name weather -- npx -y @mcp/weather
# or share this computer's files and shell
$ catflap enter

For your own server

Run your own Catflap

The gateway, this website and the sign-in pages (a Keycloak theme) are open source too: one container beside PostgreSQL and Keycloak. You need a domain with HTTPS and an email account for sign-up emails. The desktop app and the command line work with any Catflap server.

Terminal

$ git clone https://codeberg.org/hollorol/catflap.git
$ cd catflap/deploy && cp .env.example .env
# set your domain, passwords and SMTP account in .env, then
$ podman compose --profile tls up -d

Read the self-hosting guide →

Server downloads →