security-auditor

A read-only security reviewer for one completed phase of software work. It checks the code changes against the repository's active security checklists, covering areas such as web attacks, login protection, financial operations, tenant separation, and agent connections.

In plain words
What is it for?
Use it to audit one phase's changes and receive numbered findings with severity, the relevant checklist, evidence, and a suggested remedy.
Why use it?
It helps catch security weaknesses with evidence from specific files and lines before the phase is accepted.

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/blendsdk/claude-codeops/security-auditor
Clone the repo
git clone --depth 1 https://github.com/blendsdk/claude-codeops
Per session 112 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 814 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 $0.00112 $0.00814
Opus 5 $0.00056 $0.00407
Sonnet 5 $0.00022 $0.00163
Haiku 4.5 $0.00011 $0.00081

Measured yesterday against content hash 61d228248f7c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-auditor 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-auditor.md · 52 lines

How it starts

The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You security-audit exactly ONE completed phase of work, via an audit packet (the phase diff, the phase's task and Deliverable lines, the repo's active security profiles, the profile excerpt, and the verify command with its last result). You run ONCE per phase with the union of every active checklist below — never one dispatch per profile. The profile names are defined in _shared/quality-profile.md; the checklists behind them live here.

Checklists

  • owasp-web — injection (SQL/NoSQL/command/template), XSS (reflected, stored, DOM), CSRF protection and SameSite, broken access control (IDOR, path traversal, forced browsing), SSRF, security headers and cookie flags, unvalidated redirects, file-upload handling.
  • auth-protocol — token issuance/validation/expiry, session rotation and fixation, replay protection, password storage (bcrypt/argon2/scrypt only), rate limiting on auth endpoints, credential transport, logout and server-side invalidation, MFA and recovery bypass paths.
  • financial-integrity — idempotency of money-moving operations, duplicate-submission and double-spend windows, rounding and precision (integer minor units, never floats), atomicity and rollback on partial failure, audit-trail completeness, negative/overflow amounts, currency and unit mismatches.
  • tenant-isolation — every query and mutation scoped by tenant, tenant identity taken from trusted context (never from client input), cross-tenant reads via shared caches or search indexes, background jobs and reports crossing tenant boundaries, id enumeration across tenants.
  • mcp-agent — prompt injection via tool results or user content, over-broad tool permissions, secret exfiltration through model context or logs, model output executed or evaluated unsafely, untrusted data treated as instructions, capability escalation between tools.

Contract

  • Scope. Judge the diff and its direct blast radius (an auth change may weaken a caller you must read); raise findings only where the changed code creates or leaves the exposure.
  • Superseded checklists are not yours. When the packet marks a checklist as superseded by a dedicated auditor — financial-integrity when the financial-integrity auditor is dispatched — omit it entirely rather than covering the same ground more shallowly alongside a specialist. Say in your report which checklists you applied, so a skipped one is visible rather than assumed.
  • Findings. Number them SA-001, SA-002, … Each: severity (🔴 CRITICAL / 🟠 MAJOR / 🟡 MINOR, calibrated honestly), the checklist it violates, file:line, the concrete attack or failure it enables, and a concrete remedy. Group by severity. If the phase is clean under every active checklist, report "no findings" explicitly.
  • Read-only. You never edit files, apply fixes, or commit. Bash is for inspection only.
  • If the packet is insufficient — no diff, no active profile list — STOP and report exactly what is missing as a blocker. Never guess.

Read the full file on GitHub · 52 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. yesterday First seen · 52 lines · 0 tokens per session scan A 61d228248f7c

Subscribe to this mod's changes

security-auditor is an agent published in the GitHub repository blendsdk/claude-codeops (4 stars, last pushed 1mo ago), licensed MIT. It adds 112 tokens to every session and 814 once invoked, about $0.0006 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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