diff --git a/.github/workflows/build-rpm.yml b/.github/workflows/build-rpm.yml
new file mode 100644
index 000000000..586f8371c
--- /dev/null
+++ b/.github/workflows/build-rpm.yml
@@ -0,0 +1,68 @@
+name: Build RPM Packages
+
+on:
+  push:
+    tags:
+      - 'v*'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'flagcx/**'
+      - 'packaging/rpm/**'
+      - '.github/workflows/build-rpm.yml'
+  workflow_dispatch:
+
+jobs:
+  build-rpm-packages:
+    runs-on: h20
+
+    strategy:
+      fail-fast: false
+      matrix:
+        backend: [nvidia, metax, ascend]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Build ${{ matrix.backend }} RPM packages
+        run: ./packaging/rpm/build-flagcx-rpm.sh ${{ matrix.backend }}
+
+      - name: Upload ${{ matrix.backend }} RPM packages
+        uses: actions/upload-artifact@v4
+        with:
+          name: flagcx-${{ matrix.backend }}-rpm-packages
+          path: rpm-packages/${{ matrix.backend }}/**/*.rpm
+          retention-days: 7
+
+      # Publish straight from the locally-built artifacts on the same self-hosted
+      # runner: h20 can reach the internal Nexus but not codeload/api.github.com
+      # reliably, so we deliberately avoid any cross-workflow artifact round-trip.
+      - name: Publish ${{ matrix.backend }} RPMs to Nexus YUM repository
+        if: startsWith(github.ref, 'refs/tags/v')
+        env:
+          NEXUS_USERNAME: ${{ secrets.REGISTRY_USERNAME }}
+          NEXUS_PASSWORD: ${{ secrets.CONTAINER_REGISTRY }}
+          NEXUS_REPO_URL: https://resource.flagos.net/repository/flagos-yum-hosted
+          BACKEND: ${{ matrix.backend }}
+        run: |
+          set -euo pipefail
+
+          uploaded=0
+          while IFS= read -r -d '' rpm; do
+            # rel keeps the RPMS/<arch>/<file> or SRPMS/<file> layout under the backend
+            rel="${rpm#rpm-packages/${BACKEND}/}"
+            echo "Uploading ${rpm} -> ${BACKEND}/${rel}"
+            curl -f -u "${NEXUS_USERNAME}:${NEXUS_PASSWORD}" \
+              --upload-file "$rpm" \
+              "${NEXUS_REPO_URL}/${BACKEND}/${rel}"
+            uploaded=$((uploaded + 1))
+          done < <(find "rpm-packages/${BACKEND}" -name '*.rpm' -print0)
+
+          if [ "$uploaded" -eq 0 ]; then
+            echo "No RPMs found for ${BACKEND}"
+            exit 1
+          fi
+          echo "Uploaded ${uploaded} ${BACKEND} RPM(s) to Nexus YUM repository"
diff --git a/.gitignore b/.gitignore
index f47f3f9f3..ac8e47dc9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@ build
 plugin/*/build
 test/*/build
 debian-packages
+rpm-packages
 
 # Ignore compiled Python files and shared object files
 plugin/*/*.so
diff --git a/packaging/rpm/build-flagcx-rpm.sh b/packaging/rpm/build-flagcx-rpm.sh
new file mode 100755
index 000000000..a4216bfb0
--- /dev/null
+++ b/packaging/rpm/build-flagcx-rpm.sh
@@ -0,0 +1,106 @@
+#!/bin/bash
+set -e
+
+# FlagCX RPM package build script
+# Usage: ./build-flagcx-rpm.sh <backend> [base_image_version]
+# Supported backends: nvidia, metax, ascend
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+BACKEND="${1:-}"
+BASE_IMAGE_VERSION="${2:-}"
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+log_info() { echo -e "${GREEN}[INFO]${NC} $1"; }
+log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
+log_error() { echo -e "${RED}[ERROR]${NC} $1"; }
+log_step() { echo -e "${BLUE}[STEP]${NC} $1"; }
+
+# Show usage
+if [ -z "$BACKEND" ]; then
+    log_error "No backend specified"
+    echo ""
+    echo "Usage: $0 <backend> [base_image_version]"
+    echo ""
+    echo "Supported backends:"
+    echo "  nvidia  - Build RPM packages for NVIDIA GPUs"
+    echo "  metax   - Build RPM packages for MetaX accelerators"
+    echo "  ascend  - Build RPM packages for Ascend NPUs"
+    echo ""
+    echo "Examples:"
+    echo "  $0 nvidia"
+    echo "  $0 ascend 8.5.0-910-openeuler24.03-py3.11"
+    exit 1
+fi
+
+# Validate backend and set base image
+case "$BACKEND" in
+    nvidia)
+        BASE_IMAGE="nvcr.io/nvidia/cuda"
+        [ -z "$BASE_IMAGE_VERSION" ] && BASE_IMAGE_VERSION="12.4.1-devel-rockylinux8"
+        DOCKERFILE="${SCRIPT_DIR}/dockerfiles/Dockerfile.rpm.nvidia"
+        ;;
+    metax)
+        BASE_IMAGE="rockylinux"
+        [ -z "$BASE_IMAGE_VERSION" ] && BASE_IMAGE_VERSION="8"
+        DOCKERFILE="${SCRIPT_DIR}/dockerfiles/Dockerfile.rpm.metax"
+        ;;
+    ascend)
+        BASE_IMAGE="ascendai/cann"
+        [ -z "$BASE_IMAGE_VERSION" ] && BASE_IMAGE_VERSION="8.5.0-910-openeuler24.03-py3.11"
+        DOCKERFILE="${SCRIPT_DIR}/dockerfiles/Dockerfile.rpm.ascend"
+        ;;
+    *)
+        log_error "Invalid backend: $BACKEND"
+        echo "Supported backends: nvidia, metax, ascend"
+        exit 1
+        ;;
+esac
+
+log_info "Building FlagCX RPM packages for $BACKEND backend"
+log_info "Using base image: ${BASE_IMAGE}:${BASE_IMAGE_VERSION}"
+
+# Sync changelog from CHANGELOG.md
+log_step "Synchronizing changelog..."
+if [ -f "${PROJECT_DIR}/packaging/sync-changelog.py" ]; then
+    python3 "${PROJECT_DIR}/packaging/sync-changelog.py" || log_warn "Failed to sync changelog"
+else
+    log_warn "sync-changelog.py not found, skipping changelog sync"
+fi
+
+# Build Docker image using backend-specific Dockerfile with shared RPM logic.
+log_step "Building Docker image..."
+docker build \
+    --network=host \
+    --build-arg BASE_IMAGE_VERSION="${BASE_IMAGE_VERSION}" \
+    -f "${DOCKERFILE}" \
+    -t "flagcx-rpm-${BACKEND}:${BASE_IMAGE_VERSION}" \
+    "${PROJECT_DIR}"
+
+# Extract RPM packages
+log_step "Extracting RPM packages..."
+OUTPUT_DIR="${PROJECT_DIR}/rpm-packages/${BACKEND}"
+mkdir -p "${OUTPUT_DIR}"
+
+CONTAINER_ID=$(docker create "flagcx-rpm-${BACKEND}:${BASE_IMAGE_VERSION}")
+docker cp "${CONTAINER_ID}:/root/rpmbuild/RPMS/" "${OUTPUT_DIR}/"
+docker cp "${CONTAINER_ID}:/root/rpmbuild/SRPMS/" "${OUTPUT_DIR}/"
+docker rm "${CONTAINER_ID}"
+
+# Fail loudly if no RPMs were extracted, so CI doesn't silently upload empty artifacts.
+if ! find "${OUTPUT_DIR}" -name '*.rpm' | grep -q .; then
+    log_error "No RPM packages found under ${OUTPUT_DIR}"
+    exit 1
+fi
+
+log_info "✓ Packages built successfully for ${BACKEND}:"
+echo ""
+find "${OUTPUT_DIR}" -name "*.rpm" -exec ls -lh {} \;
+
+log_info "Build complete! Packages in: ${OUTPUT_DIR}"
diff --git a/packaging/rpm/dockerfiles/Dockerfile.rpm.ascend b/packaging/rpm/dockerfiles/Dockerfile.rpm.ascend
new file mode 100644
index 000000000..f709d0508
--- /dev/null
+++ b/packaging/rpm/dockerfiles/Dockerfile.rpm.ascend
@@ -0,0 +1,11 @@
+# Build FlagCX Ascend RPM packages on CANN OpenEuler images.
+
+ARG BASE_IMAGE_VERSION=8.5.0-910-openeuler24.03-py3.11
+FROM ascendai/cann:${BASE_IMAGE_VERSION}
+
+WORKDIR /workspace
+COPY . /workspace/
+
+RUN bash packaging/rpm/dockerfiles/build-rpm-common.sh ascend
+
+CMD ["/bin/bash"]
diff --git a/packaging/rpm/dockerfiles/Dockerfile.rpm.metax b/packaging/rpm/dockerfiles/Dockerfile.rpm.metax
new file mode 100644
index 000000000..a3191727e
--- /dev/null
+++ b/packaging/rpm/dockerfiles/Dockerfile.rpm.metax
@@ -0,0 +1,20 @@
+# Build FlagCX MetaX RPM packages on Rocky Linux.
+
+ARG BASE_IMAGE_VERSION=8
+FROM rockylinux:${BASE_IMAGE_VERSION}
+
+WORKDIR /workspace
+COPY . /workspace/
+
+# MetaX packages are served from the public MACA yum repository.
+# TODO: switch gpgcheck=1 once MetaX publishes a stable GPG key for
+# repos.metax-tech.com. Today this repo serves unsigned packages.
+RUN printf '[maca-sdk]\nname=MACA SDK Yum Repository\nbaseurl=https://repos.metax-tech.com/r/maca-sdk-rpm-x86_64/\nenabled=1\ngpgcheck=0\n' \
+        > /etc/yum.repos.d/maca-sdk-rpm.repo && \
+    yum makecache && \
+    yum install -y maca_sdk && \
+    yum clean all
+
+RUN bash packaging/rpm/dockerfiles/build-rpm-common.sh metax
+
+CMD ["/bin/bash"]
diff --git a/packaging/rpm/dockerfiles/Dockerfile.rpm.nvidia b/packaging/rpm/dockerfiles/Dockerfile.rpm.nvidia
new file mode 100644
index 000000000..f23cb0f15
--- /dev/null
+++ b/packaging/rpm/dockerfiles/Dockerfile.rpm.nvidia
@@ -0,0 +1,11 @@
+# Build FlagCX NVIDIA RPM packages on Rocky Linux based CUDA images.
+
+ARG BASE_IMAGE_VERSION=12.4.1-devel-rockylinux8
+FROM nvcr.io/nvidia/cuda:${BASE_IMAGE_VERSION}
+
+WORKDIR /workspace
+COPY . /workspace/
+
+RUN bash packaging/rpm/dockerfiles/build-rpm-common.sh nvidia
+
+CMD ["/bin/bash"]
diff --git a/packaging/rpm/dockerfiles/build-rpm-common.sh b/packaging/rpm/dockerfiles/build-rpm-common.sh
new file mode 100755
index 000000000..ed7104fec
--- /dev/null
+++ b/packaging/rpm/dockerfiles/build-rpm-common.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+set -euo pipefail
+
+BACKEND="${1:-}"
+
+if [ -z "${BACKEND}" ]; then
+    echo "ERROR: backend is required" >&2
+    exit 1
+fi
+
+case "${BACKEND}" in
+    nvidia|metax|ascend)
+        ;;
+    *)
+        echo "ERROR: unsupported backend: ${BACKEND}" >&2
+        exit 1
+        ;;
+esac
+
+PKG_MANAGER="$(command -v dnf || command -v yum || true)"
+if [ -z "${PKG_MANAGER}" ]; then
+    echo "ERROR: neither dnf nor yum is available in the base image" >&2
+    exit 1
+fi
+
+"${PKG_MANAGER}" install -y epel-release || \
+    echo "EPEL not available for this base image, continuing without it"
+
+"${PKG_MANAGER}" install -y \
+    rpm-build \
+    rpmdevtools \
+    gcc-c++ \
+    make \
+    cmake \
+    patchelf
+
+"${PKG_MANAGER}" install -y json-devel 2>/dev/null \
+    || "${PKG_MANAGER}" install -y nlohmann-json-devel 2>/dev/null \
+    || { echo "ERROR: neither json-devel nor nlohmann-json-devel is available; rpmbuild requires nlohmann::json headers" >&2; exit 1; }
+
+"${PKG_MANAGER}" clean all
+
+rpmdev-setuptree
+
+SPEC_VERSION="$(awk '/^Version:/ {print $2; exit}' /workspace/packaging/rpm/specs/flagcx.spec)"
+tar czf "/root/rpmbuild/SOURCES/flagcx-${SPEC_VERSION}.tar.gz" \
+    --transform "s,^\.,flagcx-${SPEC_VERSION}," \
+    --exclude='.git' \
+    --exclude='build' \
+    --exclude='debian-packages' \
+    --exclude='rpm-packages' \
+    .
+
+rpmbuild -ba \
+    --define "backend ${BACKEND}" \
+    /workspace/packaging/rpm/specs/flagcx.spec
+
+ls -lh /root/rpmbuild/RPMS/*/*.rpm
diff --git a/packaging/rpm/specs/flagcx.spec b/packaging/rpm/specs/flagcx.spec
new file mode 100644
index 000000000..6cec195f5
--- /dev/null
+++ b/packaging/rpm/specs/flagcx.spec
@@ -0,0 +1,150 @@
+%global debug_package %{nil}
+%global _build_id_links none
+# Main "flagcx" package intentionally has no %files of its own; all artifacts
+# live in the libflagcx-%{backend}{,-devel} subpackages. Without this guard,
+# rpmbuild treats an empty main package manifest as an error.
+%global _empty_manifest_terminate_build 0
+
+# Backend must be specified via: rpmbuild --define 'backend nvidia|metax|ascend'
+%{!?backend: %{error: backend must be defined (nvidia, metax, or ascend)}}
+
+# Derive uppercase backend name for make flag (USE_NVIDIA=1, etc.)
+%global backend_upper %(echo %{backend} | tr a-z A-Z)
+
+# Pin build/install arch by backend. Ascend CANN images are available for
+# both x86_64 development hosts and aarch64 deployment hosts; NVIDIA and
+# MetaX RPM builds currently target x86_64. ExclusiveArch makes rpmbuild
+# refuse to start on unsupported hosts, avoiding CPU-arch-mislabeled RPMs.
+%if "%{backend}" == "ascend"
+ExclusiveArch:  x86_64 aarch64
+%else
+ExclusiveArch:  x86_64
+%endif
+
+Name:           flagcx
+Version:        0.8.0
+Release:        1%{?dist}
+Summary:        FlagCX scalable cross-chip communication library
+
+License:        Apache-2.0
+URL:            https://github.com/flagos-ai/FlagCX
+Source0:        %{url}/archive/refs/tags/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
+
+BuildRequires:  gcc-c++
+BuildRequires:  make
+BuildRequires:  cmake
+BuildRequires:  patchelf
+# nlohmann-json package name varies by distro:
+#   - RHEL/Rocky 8 (via EPEL): json-devel
+#   - RHEL/Rocky 9 (via EPEL): nlohmann-json-devel
+#   - OpenEuler / others: nlohmann-json-devel (fallback)
+# TODO: verify Rocky 9 / RHEL 9 build path end-to-end; the EPEL 9 package
+# name is nlohmann-json-devel, but this has only been smoke-tested.
+%if 0%{?rhel} == 8
+BuildRequires:  json-devel
+%else
+%if 0%{?rhel} >= 9
+BuildRequires:  nlohmann-json-devel
+%else
+# Non-RHEL (OpenEuler, etc.) – assume upstream nlohmann-json-devel package name.
+BuildRequires:  nlohmann-json-devel
+%endif
+%endif
+
+%description
+FlagCX is a scalable and adaptive cross-chip communication library.
+It serves as a platform where developers, researchers, and AI engineers
+can collaborate on various projects.
+
+# Only the target backend's subpackages are defined
+%package -n libflagcx-%{backend}
+Summary:        FlagCX library for %{backend}
+%if "%{backend}" == "nvidia"
+# Group-call API arrived in NCCL 2.10; ncclConfig appeared in 2.14.
+# 2.10 is the practical minimum for FlagCX's adaptor today; bump to 2.14
+# once we confirm ncclConfig is actually exercised.
+Requires:       libnccl >= 2.10
+%endif
+
+%description -n libflagcx-%{backend}
+FlagCX communication library built for %{backend} hardware.
+
+%package -n libflagcx-%{backend}-devel
+Summary:        Development files for libflagcx-%{backend}
+Requires:       libflagcx-%{backend} = %{version}-%{release}
+
+%description -n libflagcx-%{backend}-devel
+Development files (headers and libraries) for libflagcx-%{backend}.
+
+%prep
+%setup -q
+
+%build
+make USE_%{backend_upper}=1 PREFIX=%{_prefix}
+
+%install
+rm -rf %{buildroot}
+
+# Install shared library
+install -d %{buildroot}%{_libdir}
+install -m 755 build/lib/libflagcx.so %{buildroot}%{_libdir}/libflagcx.so.0
+ln -s libflagcx.so.0 %{buildroot}%{_libdir}/libflagcx.so
+
+# Install headers
+install -d %{buildroot}%{_includedir}/flagcx
+cp -r flagcx/include/* %{buildroot}%{_includedir}/flagcx/
+
+# Fix RPATH and set SONAME — fail loud if patchelf can't normalize the .so,
+# otherwise a misconfigured SONAME ships and crashes consumers at runtime.
+patchelf --remove-rpath %{buildroot}%{_libdir}/libflagcx.so.0
+patchelf --set-soname libflagcx.so.0 %{buildroot}%{_libdir}/libflagcx.so.0
+
+%files -n libflagcx-%{backend}
+%license LICENSE
+%{_libdir}/libflagcx.so.0
+
+%files -n libflagcx-%{backend}-devel
+%{_includedir}/flagcx/
+%{_libdir}/libflagcx.so
+
+%changelog
+* Sat Nov 01 2025 FlagOS Contributors <contact@flagos.io> - 0.7-1
+- Added support to TsingMicro, including device adaptor tsmicroAdaptor and CCL adaptor tcclAdaptor.
+- Implemented an experimental kernel-free non-reduce collective communication (SendRecv, AlltoAll, AlltoAllv, Broadcast, Gather, Scatter, AllGather) using device-buffer IPC/RDMA.
+- Enabled auto-tuning on NVIDIA, MetaX, and Hygon platforms, achieving 1.02×–1.26× speedups for AllReduce, AllGather, ReduceScatter, and AlltoAll.
+- Enhanced flagcxNetAdaptor with one-sided primitives (put, putSignal, waitValue) and added retransmission support for reliability improvement.
+
+* Wed Oct 01 2025 FlagOS Contributors <contact@flagos.io> - 0.6-1
+- Implemented device-buffer IPC communication to support intra-node SendRecv operations.
+- Introduced device-initiated, host-launched device-side primitives, enabling kernel-based communication directly from devices.
+- Enhanced auto-tuning with 50% performance improvement on MetaX platforms for the AllReduce operations.
+
+* Mon Sep 01 2025 FlagOS Contributors <contact@flagos.io> - 0.5-1
+- Added support for AMD GPUs, including a device adaptor hipAdaptor and a CCL adaptor rcclAdaptor.
+- Introduced flagcxNetAdaptor to unify network backends, currently supporting socket, IBRC, UCX and IBUC (experimental).
+- Enabled zero-copy device-buffer RDMA (user-buffer RDMA) to boost performance for small messages.
+- Supported auto-tuning in homogeneous scenarios via flagcxTuner.
+- Added test automation in CI/CD for PyTorch APIs.
+
+* Fri Aug 01 2025 FlagOS Contributors <contact@flagos.io> - 0.4-1
+- Supported heterogeneous training of ERNIE4.5 (Baidu) on NVIDIA and Iluvatar GPUs with Paddle + FlagCX.
+- Improved heterogeneous communication across arbitrary NIC configurations, with more robust and flexible deployments.
+- Introduced an experimental network plugin interface with extended supports for IBRC and SOCKET. Device buffer registration now can be done via DMA-BUF.
+- Added an InterOp-level DSL to enable customized C2C algorithm design.
+- Provided user documentation under docs/.
+
+* Tue Jul 01 2025 FlagOS Contributors <contact@flagos.io> - 0.3-1
+- Integrated three additional native communication libraries: HCCL (Huawei), MUSACCL (Moore Threads) and MPI.
+- Enhanced heterogeneous collective communication operations with pipeline optimizations.
+- Introduced device-side functions to enable device-buffer RDMA, complementing the existing host-side functions.
+- Delivered a full-stack open-source solution, FlagScale + FlagCX, for efficient heterogeneous prefilling-decoding disaggregation.
+
+* Thu May 01 2025 FlagOS Contributors <contact@flagos.io> - 0.2-1
+- Integrated 3 additional native communications libraries, including MCCL (Moore Threads), XCCL (Mellanox) and DUCCL (BAAI).
+- Improved 11 heterogeneous collective communication operations with automatic topology detection and full support to single-NIC and multi-NIC environments.
+
+* Tue Apr 01 2025 FlagOS Contributors <contact@flagos.io> - 0.1-1
+- Added 5 native communications libraries including CCL adaptors for NCCL (NVIDIA), IXCCL (Iluvatar), and CNCL (Cambricon), and Host CCL adaptors GLOO and Bootstrap.
+- Supported 11 heterogeneous collective communication operations using the C2C (Cluster-to-Cluster) algorithm.
+- Provided a full-stack open-source solution, FlagScale + FlagCX, for efficient heterogeneous training.
+- Natively integrated into PaddlePaddle [v3.0.0](https://github.com/PaddlePaddle/Paddle/tree/v3.0.0), with support for both dynamic and static graphs.