diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1093,6 +1093,7 @@ If you believe a skill in this list should be flagged or has a security concern,
 - [1claw](https://clawskills.sh/skills/kmjones1979-1claw) - HSM-backed vault for agent secrets; store, rotate, share securely.
 - [age-verification](https://clawskills.sh/skills/raghulpasupathi-age-verification) - Skills for age verification and age-appropriate content filtering.
 - [amai-id](https://www.clawhub.ai/Gonzih/amai-id) - Soul-Bound Keys and Soulchain for persistent.
+- [agent-security-harness](https://clawhub.ai/skills/agent-security-harness) - 209 security tests for AI agent systems. MCP, A2A, L402, x402 wire-protocol testing, 20 enterprise platforms, GTG-1002 APT simulation. Agent Autonomy Risk Score for payment endpoints. pip install agent-security-harness.
 - [api-security](https://clawskills.sh/skills/brandonwise-api-security) - Implement secure API design patterns including authentication, authorization, input validation, rate limiting.
 - [audit-badge-demo](https://clawskills.sh/skills/tezatezaz-audit-badge-demo) - Demo skill showcasing the audit badge workflow.
 - [auditing-appstore-readiness](https://clawskills.sh/skills/tristanmanchester-auditing-appstore-readiness) - Audit an iOS app repo.