Anthropic Project Glasswing: Security Tools for Claude AI Agents
Anthropic releases security tools from its Mythos Preview research, including skills, Claude harness, and threat model builder for enterprises building safe AI agent systems.
Project Glasswing — Anthropic's Security Push
Anthropic is making the security tools developed during its Mythos Preview available to a wider audience. Qualifying customers can now access skills, a Claude harness, and a threat model builder — tools designed to help enterprises build and deploy AI agents safely.
Why AI Agent Security Matters
As AI agents handle more sensitive tasks — from customer support to financial operations — the attack surface expands. Agents that can take actions need guardrails that prevent misuse, data leakage, and adversarial manipulation. Glasswing addresses this directly.
The Open Source Vulnerability Dashboard
Anthropic published a dashboard of open-source vulnerabilities disclosed by Mythos Preview at red.anthropic.com. This transparency gives the broader security community visibility into real AI vulnerabilities and how they were addressed.
What Tools Are Included?
The Glasswing toolkit includes a Claude harness for controlled agent execution, configurable skills for defining agent capabilities and boundaries, and a threat model builder for systematically identifying and mitigating risks before deployment.
Enterprise-Grade AI Safety
This release signals Anthropic's belief that security cannot be an afterthought in AI agent development. By making these tools available, Anthropic is raising the bar for what "safe AI deployment" means in enterprise contexts.
Frequently Asked Questions
Q: Who can access Project Glasswing tools? A: Qualifying enterprise customers can request access. Visit Anthropic's website for eligibility details.
Q: What is the Claude harness? A: It is a controlled execution environment for Claude-based agents that enforces safety boundaries and monitors agent behavior.
Q: Are the vulnerability disclosures public? A: Yes. Anthropic published an open dashboard at red.anthropic.com/2026/cvd/ listing disclosed vulnerabilities from Mythos Preview.
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