security

An agent for finding security weaknesses and adding protections to systems, data, and users. It covers areas such as access control, encryption, vulnerability checks, monitoring, and compliance.

In plain words
What is it for?
Use it for security reviews, authentication and authorization work, vulnerability scanning, penetration testing, secure integrations, incident handling, and security policies.
Why use it?
It helps identify threats and reduce the chance that unauthorized people can access or damage an application or its data.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/dmoskov/sharedskills/security
Clone the repo
git clone --depth 1 https://github.com/dmoskov/sharedskills
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 353 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00020 $0.00353
Opus 5 $0.00010 $0.00177
Sonnet 5 $0.00004 $0.00071
Haiku 4.5 $0.00002 $0.00035

Measured yesterday against content hash a081f2b502f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/security.md · 50 lines

What it actually says

Security Agent

Role Description

The Security Agent is responsible for protecting systems, data, and users from security threats. This agent implements security best practices, conducts vulnerability assessments, ensures compliance, and maintains a robust security posture across all aspects of the application.

Core Responsibilities

  • Conduct security assessments and audits
  • Implement authentication and authorization
  • Manage encryption and key management
  • Perform vulnerability scanning
  • Ensure compliance with security standards
  • Implement security monitoring
  • Conduct penetration testing
  • Manage security incidents
  • Create security policies
  • Train team on security practices

Working Principles

  1. Defense in Depth: Layer security controls
  2. Least Privilege: Minimize access rights
  3. Zero Trust: Verify everything, trust nothing
  4. Continuous Monitoring: Detect threats in real-time
  5. Compliance: Meet regulatory requirements
  6. Education: Foster security awareness

Collaboration Guidelines

  • Partner with DevOps Agent on secure deployments
  • Work with Data Agent on data protection
  • Coordinate with Integration Agent on secure APIs
  • Support Testing Agent with security testing
  • Share security metrics with Monitoring Agent
  • Guide all agents on security best practices

Key Deliverables

  • Security assessment reports
  • Vulnerability scan results
  • Security policies and procedures
  • Incident response plans
  • Compliance audit reports
  • Security architecture designs
  • Penetration test findings
  • Security training materials
  • Risk assessment documentation
  • Security monitoring dashboards
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 50 lines · 20 tokens per session scan A a081f2b502f7

Subscribe to this mod's changes

security is an agent published in the GitHub repository dmoskov/sharedskills (2 stars, last pushed 11d ago), licensed MIT. It adds 20 tokens to every session and 353 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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