diff --git a/eplb.py b/eplb.py
index 26c3987..33b1a8c 100644
--- a/eplb.py
+++ b/eplb.py
@@ -1,7 +1,16 @@
+"""
+Expert Parallelism Load Balancer (EPLB)
+
+A load balancing algorithm for expert parallelism in MoE (Mixture of Experts) models.
+Implements redundant expert strategy with hierarchical and global load balancing policies.
+"""
+
 from typing import Tuple
 
 import torch
 
+__version__ = "1.0.0"
+
 def balanced_packing(weight: torch.Tensor, num_packs: int) -> Tuple[torch.Tensor, torch.Tensor]:
     """
     Pack n weighted objects to m packs, such that each bin contains exactly n/m objects and the weights of all packs
@@ -161,4 +170,10 @@ def rebalance_experts(weight: torch.Tensor, num_replicas: int, num_groups: int,
             torch.arange(num_replicas, dtype=torch.int64, device=log2phy.device).expand(num_layers, -1))
     return phy2log, log2phy, logcnt
 
-__all__ = ['rebalance_experts']
+__all__ = [
+    "__version__",
+    "rebalance_experts",
+    "rebalance_experts_hierarchical",
+    "balanced_packing",
+    "replicate_experts",
+]
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..c3980c6
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,39 @@
+[build-system]
+requires = ["setuptools >= 61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "eplb"
+version = "1.0.0"
+description = "Expert Parallelism Load Balancer for MoE models"
+readme = "README.md"
+license = {text = "MIT"}
+authors = [
+    {name = "DeepSeek-AI", email = "service@deepseek.com"},
+]
+keywords = ["deep-learning", "moe", "expert-parallelism", "load-balancing", "pytorch"]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Scientific/Engineering :: Artificial Intelligence",
+]
+requires-python = ">=3.8"
+dependencies = [
+    "torch >= 1.10.0",
+]
+
+[project.urls]
+Homepage = "https://github.com/deepseek-ai/EPLB"
+Repository = "https://github.com/deepseek-ai/EPLB"
+Issues = "https://github.com/deepseek-ai/EPLB/issues"
+
+[tool.setuptools]
+py-modules = ["eplb"]