The SSLMate Client - Buy and Manage SSL Certs from the Command Line
Perl Python Makefile Shell

SSLMate command line client

sslmate is the command line client for SSLMate, a service for purchasing and managing SSL certificates. SSLMate provides easy-to-use tools for buying, renewing, and revoking certificates, for monitoring the expiration date of your certificates, and for synchronizing your certificates between your servers.

SSLMate emphasizes speed, ease-of-use, and automation. For example, the command to purchase a certificate (sslmate buy) typically completes in under a minute and automates the steps of generating a private key, generating a CSR, and building a certificate bundle. SSLMate can automatically renew your certificates, and you can run sslmate download from a cron job so that renewed certificates are automatically downloaded to your server.

To use the sslmate command, you must create a free account at


SSLMate officially supports:

  • Debian 6, 7, and 8
  • Ubuntu 12.04, 14.04, 15.04, and 15.10
  • RHEL/CentOS 6 and 7
  • Fedora 20 and above
  • Arch Linux (available in the AUR)
  • Mac OS X 10.9 and above (available from Homebrew)

Packages (.deb, .rpm, and .pkg) for the above operating systems are available.

SSLMate can run on other Unix-based operating systems provided the following software is installed:

  • Perl v5.10.0 or newer.
  • The following Perl modules, which can be installed by running cpan MODULENAME or by installing the corresponding distro package.

    Module Name               Debian/Ubuntu Package       RHEL/CentOS Package
    URI                       liburi-perl                 perl-URI
    Term::ReadKey             libterm-readkey-perl        perl-TermReadKey
    JSON::PP [1]              libjson-perl                perl-JSON
    LWP (>= 6) [2]            libwww-perl                 perl-libwww-perl
    LWP::Protocol::https [2]  liblwp-protocol-https-perl  perl-LWP-Protocol-https


    1. JSON::PP is included with Perl 5.14 and later.
    2. LWP is optional; if not available SSLMate will fall back to executing the curl command directly.

Optional Dependencies

To use automatic DNS approval with Route 53, the following additional software must be installed:

  • Python 2.6, Python 2.7, Python 3, or newer.
  • Boto (Python module) 2.2 or newer.
    • Debian/Ubuntu package: python-boto (on Debian 6, requires backports)
    • RHEL/CentOS package: python-boto (requires EPEL repository)


Run make and make install.

The following Makefile variables can be passed on the command line to make and make install:

  • PREFIX=/path - Install to given path (default: /usr/local)
  • DESTDIR=/path - Stage installed files under the given path instead of installing directly to the filesystem (intended for package building)


make PREFIX=/usr
make install PREFIX=/usr DESTDIR=/tmp/pkgroot

Getting started

See SSLMate's guide to getting started.

Getting help