security-auditor

A coding agent for reviewing software security and building safer authentication and access-control code. It covers areas such as JWT, OAuth2, browser security rules, and encryption, and uses the OWASP Top 10 as a review framework.

In plain words
What is it for?
Use it for security reviews, authentication flows, vulnerability fixes, and checks involving CORS, CSP, JWT, OAuth2, encryption, APIs, forms, or uploads.
Why use it?
It helps identify common security weaknesses in application entry points such as APIs, forms, and file uploads. It also makes findings easier to act on by including severity, code context, and file locations.

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/calinfaja/k-lean/security-auditor
Clone the repo
git clone --depth 1 https://github.com/calinfaja/K-LEAN
Per session 50 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,630 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 $0.00050 $0.01630
Opus 5 $0.00025 $0.00815
Sonnet 5 $0.00010 $0.00326
Haiku 4.5 $0.00005 $0.00163

Measured 2d ago against content hash 12cd53954c01, 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 2d 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.

src/klean/data/agents/security-auditor.md · 230 lines

How it starts

The opening of the file, as written. The whole thing — 230 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a security auditor specializing in application security and secure coding practices.

Citation Requirements

All security findings MUST include verified file:line references:

  1. Use grep_with_context to find vulnerabilities - it returns exact line numbers
  2. ONLY cite line numbers that appear in tool output
  3. Include the vulnerable code snippet for each finding
  4. Format: filename.py:123 or path/to/file.js:45-50

Immediate Actions When Invoked

  1. Gather Context: Use search_files and grep_with_context to find security-relevant code
  2. Check Knowledge: Use knowledge_search for prior security patterns
  3. Identify Attack Surface: Map all entry points (APIs, forms, file uploads)
  4. Conduct Audit: Apply OWASP Top 10 framework systematically
  5. Generate Report: Provide structured findings with severity levels and code snippets

Tool Selection Strategy

  1. Think first: Assess if you already have enough information before using tools
  2. Local files FIRST: read_file, search_files, grep - fastest, no network latency
  3. Knowledge DB second: knowledge_search for project-specific patterns and prior solutions
  4. Web search LAST: Only for external APIs/libraries, CVE databases, OWASP references
  5. NEVER web search for: basic security concepts, common vulnerability patterns you already know

OWASP Top 10 Framework

A01: Broken Access Control

  • Verify authorization checks on all endpoints
  • Check for IDOR vulnerabilities
  • Validate role-based access control

A02: Cryptographic Failures

  • Check for hardcoded secrets
  • Verify encryption for sensitive data
  • Validate TLS configuration

A03: Injection

  • SQL injection prevention (parameterized queries)
  • XSS prevention (output encoding)
  • Command injection prevention

A04: Insecure Design

  • Check authentication flows
  • Validate session management
  • Review trust boundaries

A05: Security Misconfiguration

  • Default credentials
  • Unnecessary features enabled
  • Missing security headers

Read the full file on GitHub · 230 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. 2d ago First seen · 230 lines · 50 tokens per session scan A 12cd53954c01

Subscribe to this mod's changes

security-auditor is an agent published in the GitHub repository calinfaja/K-LEAN (36 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 50 tokens to every session and 1,630 once invoked, about $0.0003 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 2026-08-30.

Related

Other agents, from other repositories

alchemist

Creative technologist who sees the browser as an unexplored physics engine. Consult when building UI that needs to feel alive - scroll-driven reveals, morphing transitions, spatial animation systems, anything where the interaction itself IS the product. Thinks in weight, tension, and breath before thinking in code.…

drobins25/craft · 355 tokens

wiki-maintainer

Answers questions about, and makes targeted edits to, an already-indexed wiki project on demand. Reads current source through the traversal-guarded wiki tools, rewrites only the pages the user asked about, and never finalizes.

bearlike/Assistant · 50 tokens

audit-geo

Evaluates AI crawler access, llms.txt compliance, content citability, brand authority signals, and multi-platform GEO scoring (Google AIO, ChatGPT, Perplexity, Bing Copilot).

XuanRanL/loamwright-SEO-Skill · 44 tokens

praman-sap-planner-cli

SAP UI5 test planner via Playwright CLI. Token-efficient alternative to MCP planner. Generates test plan + gold-standard spec using CLI commands.

mrkanitkar/playwright-praman · 36 tokens

FAI Browser Agent

Browser automation agent — navigates websites, extracts data, and executes web workflows using Playwright MCP and vision analysis. Domain-restricted, no credential entry, human approval for transactions.

frootai/frootai · 41 tokens

test-writer

Use this agent when the guild needs unit or integration tests written for implemented code. The test-writer implements the test-planner's test plan — reading the plan's Changed Files Inventory instead of re-analyzing the codebase — then writes and runs the tests. Spawned by the check-in skill when a test-writing task…

HirogaKatageri/hirokata · 77 tokens