wardn MCP Server Prevents Claude Code from Seeing Real API Keys in Environment

r/ClaudeAI / GitHub·low signalXBlueskyLinkedInCopy link

A developer built wardn, an MCP server that intercepts API key access in Claude Code sessions so that real keys (OpenAI, Anthropic, etc.) never appear in the context window or logs. The project addresses a real security gap: environment variables with API keys are readable by the AI agent and can appear in conversation context. With 80 upvotes and 26 comments on r/ClaudeAI, this is a niche but important security tool — especially relevant given the recently patched Check Point CVEs (CVE-2025-59536 and CVE-2026-21852) demonstrating API key exfiltration through Claude Code project files.