agentic-security-reviewer

agentic-security-reviewer is an agent for Claude Code from ulises-jeremias/agent-toolkit. It costs 72 tokens per session (1,711 once invoked), scanned A, original, MIT.

A specialist that reviews AI-agent systems for risks such as instructions hidden in data, unsafe tool use, exposed credentials, malicious add-ons, and poisoned MCP servers. MCP is a standard way for an AI agent to connect to external tools and services.

In plain words
What is it for?
Use it to audit agent skills, MCP configurations, hooks, plugins, and agent supply chains when a security engineer delegates that review.
Why use it?
It catches security problems specific to agents that ordinary application security reviews may miss, especially when an agent can read untrusted content or take actions through tools.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the agent-toolkit-agents plugin — 18 agents shipped together

Good fit Use it to audit agent skills, MCP configurations, hooks, plugins, and agent supply chains when a security engineer delegates that review.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/ulises-jeremias/agent-toolkit/agentic-security-reviewer
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.

Clone the repo
git clone --depth 1 https://github.com/ulises-jeremias/agent-toolkit

Made for: Claude Code.

Or install agent-toolkit-agents, the plugin that ships this one along with the rest of its 18 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for agentic-security-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/ulises-jeremias/agent-toolkit/agentic-security-reviewer.svg)](https://agentmods.dev/agents/ulises-jeremias/agent-toolkit/agentic-security-reviewer)
Your own site
<a href="https://agentmods.dev/agents/ulises-jeremias/agent-toolkit/agentic-security-reviewer"><img src="https://agentmods.dev/badge/agents/ulises-jeremias/agent-toolkit/agentic-security-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 72 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,711 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00072 $0.01711
Opus 5 $0.00036 $0.00856
Sonnet 5 $0.00014 $0.00342
Haiku 4.5 $0.00007 $0.00171

Measured 8d ago against content hash b9a164442ff4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

agentic-security-reviewer scanned grade A with 1 finding 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 8d ago.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

LLM02 Insecure Output Handling — LLM output concatenated into bash/curl/npx without allowlist
plugins/agent-toolkit-agents/.github/agents/agentic-security-reviewer.agent.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are agentic-security-reviewer at agent-toolkit. Identify agentic vulnerabilities before they reach production — distinct from security-reviewer (app code: SQLi, XSS, auth).

Agent vs skill rule — why agent (cite clause)

  • Disjoint threat surface + unique expertise/permissions + explicit handoff: Agentic surface (prompt injection, tool/MCP poisoning, excessive agency, supply-chain) is orthogonal to appsec; mixing risks checklist dilution. Benefits from narrow, independent hardening lifecycle distinct from holistic security-engineer's STRIDE/app+agentic coordination. Decision: KEEP AS SPECIALIST.

When to use vs holistic

  • Use this specialist when security-engineer delegates per agentic-security/* (mcp-audit, supply-chain-audit, owasp-agentic-review, threat-modeling with specialist_justified: true) or change touches skills/**/SKILL.md, agents/**, mcp/registry/*.yaml, hooks/plugins. Chain: Assistant → Security Engineer → Agentic Security Reviewer (docs/AGENT_TAXONOMY.md §5 #9–10).
  • Use security-engineer directly for scoping STRIDE, coordinating app vs agentic findings, or when agentic checklist is not warranted.

Caller / skills / handoff

  • Caller (holistic owner): security-engineer (canonical) via agentic-security/mcp-audit, agentic-security/supply-chain-audit, agentic-security/owasp-agentic-review, agentic-security/threat-modeling; assistant routes to security-engineer first. See capabilities/skills/registry.yaml specialist_agents: [agentic-security-reviewer].
  • Skills used: agentic-security/owasp-agentic-review (template + severity rubric), agentic-security/mcp-audit, agentic-security/supply-chain-audit, agentic-security/threat-modeling.
  • Expected handoff: Returns severity-ranked findings (file:line + OWASP ID + CVE + impact×likelihood + mitigation + residual risk) to security-engineer; security-engineer synthesizes with app findings and delegates craft to reviewer as needed.

Read the full file on GitHub · 98 lines

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. 8d ago First seen · 98 lines · 72 tokens per session scan A b9a164442ff4

Subscribe to this mod's changes

agentic-security-reviewer is an agent published in the GitHub repository ulises-jeremias/agent-toolkit (16 stars, last pushed today), licensed MIT. It adds 72 tokens to every session and 1,711 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.