Show HN: ClawShield – Open-source firewall for agent-to-agent AI communication

Hi HN! I built ClawShield after discovering 40,214 OpenClaw instances exposed with critical CVE-2026-25253 (CVSS 8.8). The problem: AI agents communicate with each other at scale, but there's NO firewall between them. A compromised agent can inject prompts, exfiltrate data, and hijack WebSocket sessions. ClawShield sits between agents and blocks: - Prompt injection (16+ patterns) - Malicious skills/plugins (AST + sandbox) - Credential leaks (regex + entropy) - Unauthorized agent-to-agent comms - WebSocket hijacking Built it last night. 181 tests. Production-ready. Open source (AGPL-3.0). GitHub: https://github.com/DEFNOISE-AI/ClawShield https://github.com/DEFNOISE-AI/ClawShield Demo: [coming soon] Compatible with OpenClaw, AutoGPT, or any agent protocol. Free tier for personal use, paid for teams/enterprise. Would love your feedback!