diff --git a/ports-mgmt/check_mk_agent/Makefile b/ports-mgmt/check_mk_agent/Makefile
new file mode 100644
index 0000000..da8238f
--- /dev/null
+++ b/ports-mgmt/check_mk_agent/Makefile
@@ -0,0 +1,70 @@
+PORTNAME=	check_mk_agent
+DISTVERSIONPREFIX=	v
+DISTVERSION=	2.3.0p12
+PORTREVISION=	1
+CATEGORIES=	net-mgmt
+MASTER_SITES=	https://raw.githubusercontent.com/Checkmk/checkmk/${DISTVERSIONFULL}/agents/:agent \
+		https://raw.githubusercontent.com/Checkmk/checkmk/${DISTVERSIONFULL}/doc/agents/:doc \
+		https://raw.githubusercontent.com/Checkmk/checkmk/${DISTVERSIONFULL}/:license
+DISTFILES=	${_CHECKMK_AGENT}:agent \
+		README.FreeBSD:doc \
+		COPYING:license
+DIST_SUBDIR=	${PORTNAME}-${PORTVERSION}
+
+MAINTAINER=	ivalentine@arizona.edu
+COMMENT=	Checkmk agent to monitor *nix style systems
+WWW=		https://checkmk.com/
+
+LICENSE=	GPLv2
+LICENSE_FILE=	${WRKSRC}/COPYING
+
+RUN_DEPENDS=	bash:shells/bash \
+		ipmitool:sysutils/ipmitool \
+		statgrab:devel/libstatgrab \
+		wget:ftp/wget
+
+USES=		perl5 python:3.4+ shebangfix
+USE_PERL5=	run
+
+SHEBANG_FILES=	${_CHECKMK_AGENT}
+
+EXTRACT_CMD=	${CP}
+EXTRACT_BEFORE_ARGS=	# none
+EXTRACT_AFTER_ARGS=	${WRKSRC}
+
+NO_ARCH=	yes
+NO_BUILD=	yes
+NO_TEST=	yes
+
+SUB_FILES=	pkg-message
+SUB_LIST=	PORTNAME=${PORTNAME}
+
+NO_WRKSUBDIR=	yes
+
+PLIST_FILES=	bin/${PORTNAME}
+
+PORTDOCS=	README.FreeBSD
+
+OPTIONS_DEFINE=	DOCS
+
+_CHECKMK_AGENT=		${PORTNAME}.freebsd
+_CHECKMK_LIBDIR=	${PREFIX}/lib/check_mk_agent
+_CHECKMK_CONFDIR=	${PREFIX}/etc/check_mk
+
+post-patch:
+	@${REINPLACE_CMD} \
+		-e 's|%%CHECKMK_LIBDIR%%|${_CHECKMK_LIBDIR}|' \
+		-e 's|%%CHECKMK_CONFDIR%%|${_CHECKMK_CONFDIR}|' \
+		-e 's|%%LOCALBASE%%|${LOCALBASE}|g' \
+		${WRKSRC}/${_CHECKMK_AGENT}
+
+do-install:
+	${INSTALL_SCRIPT} ${WRKSRC}/${_CHECKMK_AGENT} \
+		${STAGEDIR}${PREFIX}/bin/${PORTNAME}
+
+post-install-DOCS-on:
+	@${MKDIR} ${STAGEDIR}${DOCSDIR}
+	${INSTALL_DATA} ${WRKSRC}/README.FreeBSD \
+		${STAGEDIR}${DOCSDIR}
+
+.include <bsd.port.mk>
diff --git a/ports-mgmt/check_mk_agent/distinfo b/ports-mgmt/check_mk_agent/distinfo
new file mode 100644
index 0000000..807877b
--- /dev/null
+++ b/ports-mgmt/check_mk_agent/distinfo
@@ -0,0 +1,7 @@
+TIMESTAMP = 1723755628
+SHA256 (check_mk_agent-2.3.0.p12/check_mk_agent.freebsd) = e90757599339de56cab8f5059a1006d20f6bdfe9cb5cfd8460b95deee8039ffd
+SIZE (check_mk_agent-2.3.0.p12/check_mk_agent.freebsd) = 32404
+SHA256 (check_mk_agent-2.3.0.p12/README.FreeBSD) = 01094a2197ca0a3a43ac16098c0f800d2ee808db2fd9a2f133f4bad04062ec5f
+SIZE (check_mk_agent-2.3.0.p12/README.FreeBSD) = 1349
+SHA256 (check_mk_agent-2.3.0.p12/COPYING) = fbaab079995bef694ef8451f0f763b91b44e5b57b8e2a487d2a240b395187a7f
+SIZE (check_mk_agent-2.3.0.p12/COPYING) = 15174
diff --git a/ports-mgmt/check_mk_agent/files/patch-check__mk__agent.freebsd b/ports-mgmt/check_mk_agent/files/patch-check__mk__agent.freebsd
new file mode 100644
index 0000000..09e7ebd
--- /dev/null
+++ b/ports-mgmt/check_mk_agent/files/patch-check__mk__agent.freebsd
@@ -0,0 +1,26 @@
+--- check_mk_agent.freebsd.orig	2024-08-15 18:32:18 UTC
++++ check_mk_agent.freebsd
+@@ -117,9 +117,9 @@ set_variable_defaults() {
+ #
+ 
+ set_variable_defaults() {
+-    : "${MK_LIBDIR:=/usr/local/lib/check_mk_agent}"
+-    : "${MK_CONFDIR:=/etc/check_mk}"
+-    : "${MK_VARDIR:=/var/lib/check_mk_agent}"
++    : "${MK_LIBDIR:=%%CHECKMK_LIBDIR%%}"
++    : "${MK_CONFDIR:=%%CHECKMK_CONFDIR%%}"
++    : "${MK_VARDIR:=/var/db/check_mk_agent}"
+     : "${MK_LOGDIR:=/var/log/check_mk_agent}"
+ 
+     # some 'booleans'
+@@ -138,8 +138,8 @@ preamble_1() {
+     # Make sure locally installed binaries are found
+     # Only add binaries if they are not already in the path! If you append to path in a loop the process will
+     # eventually each the 128k size limit for the environment and become a zombie process. See execve manpage.
+-    [ "${PATH#*"/usr/local/bin"}" != "${PATH}" ] || PATH="${PATH}:/usr/local/bin"
+-    [ "${PATH#*"/usr/local/sbin"}" != "${PATH}" ] || PATH="${PATH}:/usr/local/sbin"
++    [ "${PATH#*"%%LOCALBASE%%/bin"}" != "${PATH}" ] || PATH="${PATH}:%%LOCALBASE%%/bin"
++    [ "${PATH#*"%%LOCALBASE%%/sbin"}" != "${PATH}" ] || PATH="${PATH}:%%LOCALBASE%%/sbin"
+     [ -d "/var/qmail/bin" ] && { [ "${PATH#*"/var/qmail/bin"}" != "${PATH}" ] || PATH="${PATH}:/var/qmail/bin"; }
+ 
+     # All executables in PLUGINSDIR will simply be executed and their
diff --git a/ports-mgmt/check_mk_agent/files/pkg-message.in b/ports-mgmt/check_mk_agent/files/pkg-message.in
new file mode 100644
index 0000000..66c7125
--- /dev/null
+++ b/ports-mgmt/check_mk_agent/files/pkg-message.in
@@ -0,0 +1,16 @@
+[
+{ type: install
+  message: <<EOM
+Checkmk may collect additional data if the following ports are installed:
+- sysutils/megacli
+- mail/postfix
+- mail/qmail
+
+See the code of the agent (%%PREFIX%%/bin/%%PORTNAME%%) for details.
+
+Configuration instructions may be found in one of the following places:
+- %%DOCSDIR%%/README.FreeBSD
+- https://docs.checkmk.com/latest/en/agent_freebsd.html
+EOM
+}
+]
diff --git a/ports-mgmt/check_mk_agent/pkg-descr b/ports-mgmt/check_mk_agent/pkg-descr
new file mode 100644
index 0000000..b9fce46
--- /dev/null
+++ b/ports-mgmt/check_mk_agent/pkg-descr
@@ -0,0 +1,16 @@
+For a monitoring system to receive more information from an endpoint
+other than that it is simply accessible, help is required from the
+target system. For example - how else can Checkmk know how full a
+server's storage volume is without that system somehow providing the
+information? The component that provides this information is always an
+active piece of software - namely a monitoring agent, usually just
+referred to as an agent. An agent collects data relevant to monitoring
+from a host at specified intervals and transmits that data to the
+monitoring server.
+
+For servers and workstations, Checkmk provides its own agents, these
+are known as Checkmk agents. Checkmk agents are available for a wide
+variety of operating systems - from the commonplace such as Windows and
+Linux to exotics such as OpenVMS. The agents are passive and listen on
+TCP port 6556. Only on receiving a Checkmk server query will these
+agents be activated and respond with the required data.