Fix PyPI metadata dependency

Author: jiayuqi7813

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "zero-context-protocol-sdk"
-version = "0.2.0a0"
+version = "0.2.0a2"
 description = "Official Python SDK for Zero Context Protocol (ZCP), with MCP-compatible server surfaces and native protocol support"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -19,7 +19,7 @@ Repository = "https://github.com/FishCodeTech/zero-context-protocol-python"
 Issues = "https://github.com/FishCodeTech/zero-context-protocol-python/issues"
 
 [project.optional-dependencies]
-mcp = ["mcp @ git+https://github.com/modelcontextprotocol/python-sdk.git"]
+mcp = ["mcp>=1.3.0"]
 openai = ["openai>=1.0.0"]
 dev = ["pytest>=8.0.0", "ruff>=0.11.0", "build>=1.2.2", "twine>=5.1.1"]