diff --git a/projects/msgpack.org/package.yml b/projects/msgpack.org/package.yml
new file mode 100644
index 00000000..a3bac68b
--- /dev/null
+++ b/projects/msgpack.org/package.yml
@@ -0,0 +1,39 @@
+distributable:
+  url: https://github.com/msgpack/msgpack-c/releases/download/c-{{version}}/msgpack-c-{{version}}.tar.gz
+  strip-components: 1
+
+versions:
+  github: msgpack/msgpack-c
+  strip: /^cpp-/
+
+build:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    tea.xyz/gx/make: '*'
+    cmake.org: '*'
+    google.com/googletest: '*'
+
+  script:
+    - cmake -S . -B build $ARGS
+    - cmake --build build
+    - cmake --install build
+  env:
+    ARGS:
+      - -DMSGPACK_BUILD_TESTS=OFF
+      - -DCMAKE_INSTALL_PREFIX={{prefix}}
+      - -DCMAKE_INSTALL_LIBDIR=lib
+      - -DCMAKE_BUILD_TYPE=Release
+      - -DCMAKE_FIND_FRAMEWORK=LAST
+      - -DCMAKE_VERBOSE_MAKEFILE=ON
+      - -Wno-dev
+      - -DBUILD_TESTING=OFF
+
+test:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    freedesktop.org/pkg-config: '*'
+  script:
+    - cc test.c -lmsgpack-c -o test
+    - ./test
+    - pkg-config --modversion msgpack-c | grep {{version}}
+  
\ No newline at end of file
diff --git a/projects/msgpack.org/test.c b/projects/msgpack.org/test.c
new file mode 100644
index 00000000..ecaad5b1
--- /dev/null
+++ b/projects/msgpack.org/test.c
@@ -0,0 +1,29 @@
+#include <msgpack.h>
+#include <stdio.h>
+
+int main(void)
+{
+    msgpack_sbuffer* buffer = msgpack_sbuffer_new();
+    msgpack_packer* pk = msgpack_packer_new(buffer, msgpack_sbuffer_write);
+    msgpack_pack_int(pk, 1);
+    msgpack_pack_int(pk, 2);
+    msgpack_pack_int(pk, 3);
+
+    /* deserializes these objects using msgpack_unpacker. */
+    msgpack_unpacker pac;
+    msgpack_unpacker_init(&pac, MSGPACK_UNPACKER_INIT_BUFFER_SIZE);
+
+    /* feeds the buffer. */
+    msgpack_unpacker_reserve_buffer(&pac, buffer->size);
+    memcpy(msgpack_unpacker_buffer(&pac), buffer->data, buffer->size);
+    msgpack_unpacker_buffer_consumed(&pac, buffer->size);
+
+    /* now starts streaming deserialization. */
+    msgpack_unpacked result;
+    msgpack_unpacked_init(&result);
+
+    while(msgpack_unpacker_next(&pac, &result)) {
+        msgpack_object_print(stdout, result.data);
+        puts("");
+    }
+}
\ No newline at end of file