MCP Firewall v0.1.0 - Initial Release

MCP Firewall v0.1.0

Initial open-source release of MCP Firewall — a policy and audit layer for Model Context Protocol (MCP).

Highlights

• Transparent stdio proxy for MCP clients (Claude Desktop, Cursor, VS Code).
• Policy engine with tool allow/deny lists and parameter matching.
• Structured JSON audit logging and built-in read-only mode.
• Zero modifications required to upstream clients or servers.

Installation (Windows)

1. Download mcp-firewall.exe from Assets below.
2. Place mcp-firewall.exe in your project folder or system PATH.
3. Run mcp-firewall.exe init to generate a default configuration file.