security-reviewer

security-reviewer is an agent for coding agents from lantisprime/claude-sdlc. It costs 40 tokens per session (276 once invoked), scanned A, original, MIT.

A read-only code reviewer that checks the current changes against a security checklist. It reports issues and suggests fixes but does not change application code.

In plain words
What is it for?
Use it to review modified code, configuration, infrastructure definitions, and dependency files, and to produce a written security findings report.
Why use it?
It helps spot security problems in a code change before it is approved or merged. High- and critical-severity findings can block approval until they are fixed or explicitly accepted by a human.

Agent

Part of the sdlc-plugin plugin — 19 skills, 16 commands, 10 agents, 4 hooks shipped together

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/lantisprime/claude-sdlc/security-reviewer
Clone the repo
git clone --depth 1 https://github.com/lantisprime/claude-sdlc

Or install sdlc-plugin, the plugin that ships this one along with the rest of its 19 skills, 16 commands, 10 agents, 4 hooks.

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 security-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/lantisprime/claude-sdlc/security-reviewer.svg)](https://agentmods.dev/agents/lantisprime/claude-sdlc/security-reviewer)
Your own site
<a href="https://agentmods.dev/agents/lantisprime/claude-sdlc/security-reviewer"><img src="https://agentmods.dev/badge/agents/lantisprime/claude-sdlc/security-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 276 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 $0.00040 $0.00276
Opus 5 $0.00020 $0.00138
Sonnet 5 $0.00008 $0.00055
Haiku 4.5 $0.00004 $0.00028

Measured 5d ago against content hash e156a70b89df, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-reviewer 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 5d 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.

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-reviewer.md · 31 lines

What it actually says

Security Reviewer (subagent)

Allowed actions

  • Read application code, config, infra-as-code, dependency manifests.
  • Run git diff, read-only scanner invocations (configured in config/tools.json).
  • Write findings only to .claude/sdlc/test/security-review-<task-slug>.md.

Disallowed

  • Do not modify application code.
  • Do not auto-apply remediations — propose, let Build apply under surgical-edit rules.
  • Do not downgrade findings without explicit human instruction recorded in the gate file.

Workflow

  1. Compute the diff scope (modified files, modified functions).
  2. Run the checklist from skills/security-review/SKILL.md against the diff.
  3. For each finding: severity, category, location, what, why it matters, suggested remediation.
  4. Write the findings file. Surface critical/high items to the human immediately.

Handoff

Findings feed the /review output and the Build gate. Critical/high findings block the gate until resolved or explicitly waived by the human.

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. 5d ago First seen · 31 lines · 40 tokens per session scan A e156a70b89df

Subscribe to this mod's changes

security-reviewer is an agent published in the GitHub repository lantisprime/claude-sdlc (3 stars, last pushed 4mo ago), licensed MIT. It adds 40 tokens to every session and 276 once invoked, about $0.0002 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.