Policy Firewall
Security proxy that enforces allow/deny policies on MCP tool calls between AI clients and downstream MCP servers, with secret redaction and audit logging.
About
Policy Firewall sits as middleware between AI clients and downstream MCP servers, intercepting tool call requests before execution. It evaluates configurable JSON policy rules with allowlist/denylist patterns, enforces path and domain scope constraints, requires confirmation for sensitive operations, redacts secrets from audit logs, and returns structured denial explanations to the AI client. Supports filesystem, git, and network tool governance.
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