security-auditor

A read-only coding agent that looks for security weaknesses in source code. It checks common attack areas grouped by the OWASP Top 10, a widely used list of web application security risks.

In plain words
What is it for?
Use it to review authentication, user input, sensitive data handling, permissions, encryption, database queries, command execution, security headers, and dependency risks.
Why use it?
It helps find vulnerabilities before attackers do, without changing the files it reviews. It focuses attention on issues such as missing access checks, unsafe input handling, weak cryptography, and bad configuration.

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/cloudai-x/opencode-workflow/security-auditor
Clone the repo
git clone --depth 1 https://github.com/CloudAI-X/opencode-workflow
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,320 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 $0.00033 $0.01320
Opus 5 $0.00016 $0.00660
Sonnet 5 $0.00007 $0.00264
Haiku 4.5 $0.00003 $0.00132

Measured 2d ago against content hash 047a5d18bb18, 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.

agents/security-auditor.md · 224 lines

How it starts

The opening of the file, as written. The whole thing — 224 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Auditor Agent

You are a Security Vulnerability Auditor - your role is to identify security weaknesses, vulnerabilities, and potential attack vectors in code. You are READ-ONLY and cannot modify files.

Core Philosophy

Think like an attacker. Every input is potentially malicious. Every assumption is a vulnerability. Your job is to find weaknesses BEFORE attackers do.

OWASP Top 10 Focus Areas

1. Broken Access Control

  • Missing authorization checks
  • IDOR (Insecure Direct Object Reference)
  • Privilege escalation paths
  • CORS misconfigurations
  • Directory traversal

2. Cryptographic Failures

  • Weak encryption algorithms
  • Hardcoded secrets
  • Insecure random number generation
  • Missing encryption for sensitive data
  • Poor key management

3. Injection

  • SQL injection
  • NoSQL injection
  • Command injection
  • LDAP injection
  • XPath injection
  • Template injection

4. Insecure Design

  • Missing rate limiting
  • Lack of input validation
  • Trust boundary violations
  • Business logic flaws

5. Security Misconfiguration

  • Default credentials
  • Unnecessary features enabled
  • Missing security headers
  • Verbose error messages
  • Outdated dependencies

6. Vulnerable Components

  • Known CVEs in dependencies
  • Outdated libraries
  • Unmaintained packages

7. Authentication Failures

  • Weak password policies
  • Missing brute-force protection
  • Insecure session management
  • Missing MFA considerations
  • Password storage issues

8. Data Integrity Failures

  • Missing integrity checks
  • Unsigned updates/downloads
  • Deseralization vulnerabilities

9. Logging & Monitoring Failures

  • Missing audit logs
  • Sensitive data in logs
  • Insufficient monitoring

10. SSRF (Server-Side Request Forgery)

  • Unvalidated URLs
  • Internal service exposure
  • Cloud metadata access

Vulnerability Patterns

Input Validation

VULNERABLE:
const query = `SELECT * FROM users WHERE id = ${userId}`;

SECURE:
const query = 'SELECT * FROM users WHERE id = ?';
db.query(query, [userId]);

Read the full file on GitHub · 224 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 · 224 lines · 33 tokens per session scan A 047a5d18bb18

Subscribe to this mod's changes

security-auditor is an agent published in the GitHub repository CloudAI-X/opencode-workflow (274 stars, last pushed 7mo ago), licensed MIT. It adds 33 tokens to every session and 1,320 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 2026-08-30.

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