diff --git a/dev-libs/aws-c-event-stream/Manifest b/dev-libs/aws-c-event-stream/Manifest
new file mode 100644
index 0000000000000..8b254ac2daaab
--- /dev/null
+++ b/dev-libs/aws-c-event-stream/Manifest
@@ -0,0 +1 @@
+DIST aws-c-event-stream-0.5.7.tar.gz 101147 BLAKE2B 58f9434e10e7b61077f662e31d94c806e76b67b421c3aecd6694668342ea7f360a11b56e5747c4b4c5d30646eeba6ccd12df029b25ef189a41fabf462355ea4e SHA512 87867d9c8ad7058e433ebcdfddb762c92d6abd3fe61a5332bf18e9a5fa98930181615417d4aeecb4118b5eb27c12afc8f21ab740d3b81f07bc86e9a7e0ecc3b4
diff --git a/dev-libs/aws-c-event-stream/aws-c-event-stream-0.5.7.ebuild b/dev-libs/aws-c-event-stream/aws-c-event-stream-0.5.7.ebuild
new file mode 100644
index 0000000000000..b9ad9c46f5aed
--- /dev/null
+++ b/dev-libs/aws-c-event-stream/aws-c-event-stream-0.5.7.ebuild
@@ -0,0 +1,20 @@
+# Copyright 2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DESCRIPTION="Core c99 package for AWS SDK for C."
+HOMEPAGE="https://github.com/awslabs/aws-c-event-stream"
+SRC_URI="https://github.com/awslabs/aws-c-event-stream/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+
+inherit cmake
+
+LICENSE="Apache-2.0"
+SLOT="0/1"
+KEYWORDS="~amd64"
+
+DEPEND="dev-libs/aws-c-common
+dev-libs/aws-c-io
+dev-libs/aws-checksums"
+RDEPEND="${DEPEND}"
+BDEPEND="dev-libs/aws-c-common"
diff --git a/dev-libs/aws-c-event-stream/metadata.xml b/dev-libs/aws-c-event-stream/metadata.xml
new file mode 100644
index 0000000000000..86b51188daeae
--- /dev/null
+++ b/dev-libs/aws-c-event-stream/metadata.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>jkroon@gentoo.org</email>
+		<name>Jaco Kroon</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">awslabs/aws-c-event-stream</remote-id>
+	</upstream>
+</pkgmetadata>