security

security is a command for Claude Code, OpenCode from affaan-m/ECC. It costs 4 tokens per session (457 once invoked), scanned A, original, MIT.

A command that performs a broad security review of code using the OWASP Top 10 and related security practices. OWASP is a community project that documents common web-application security risks.

In plain words
What is it for?
Use it to review injection, authentication, data exposure, access control, configuration, cross-site scripting, XML processing, and unsafe deserialization.
Why use it?
It provides a checklist for finding vulnerabilities that may expose data, allow unauthorized access, or let attackers run unwanted code.

Command for Claude CodeOpenCode

Written for Claude Code and OpenCode: $ARGUMENTS substitution, but also installed under .opencode/. Also seen: agent in frontmatter.

Part of the ecc plugin — 70 skills, 56 commands, 68 agents, 1 MCP server shipped together

About the project

ECC is a toolkit that organizes and improves how coding agents work through skills, memory, security checks, research practices, and related extensions. It is for developers using agents such as Claude Code, Codex, OpenCode, and Cursor.

affaan-m/ECC · 250,130 stars · on GitHub · ecc.tools

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 commands/affaan-m/ecc/security
Clone the repo
git clone --depth 1 https://github.com/affaan-m/ECC

Made for: Claude Code, OpenCode.

Or install ecc, the plugin that ships this one along with the rest of its 70 skills, 56 commands, 68 agents, 1 MCP server.

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

README.md
[![agentmods](https://agentmods.dev/badge/commands/affaan-m/ecc/security.svg)](https://agentmods.dev/commands/affaan-m/ecc/security)
Your own site
<a href="https://agentmods.dev/commands/affaan-m/ecc/security"><img src="https://agentmods.dev/badge/commands/affaan-m/ecc/security.svg" alt="Measured on agentmods" height="20"></a>
Per session 4 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 457 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 5.1 $0.00004 $0.00457
Opus 5 $0.00002 $0.00229
Sonnet 5 $0.00001 $0.00091
Haiku 4.5 $0.00000 $0.00046

Measured 2d ago against content hash 90c9b198ec81, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

security 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.

Origin

Copies of this mod

8 near-identical copies found in the catalogue:

  • security — 100% identical, 0 lines differ
  • security — 100% identical, 0 lines differ
  • security — 100% identical, 0 lines differ
  • security — 100% identical, 0 lines differ
  • security — 100% identical, 0 lines differ
  • security — 100% identical, 0 lines differ
  • security — 98% identical, 2 lines differ
  • security — 97% identical, 2 lines differ
.opencode/commands/security.md · 90 lines

What it actually says

Security Review Command

Conduct a comprehensive security review: $ARGUMENTS

Your Task

Analyze the specified code for security vulnerabilities following OWASP guidelines and security best practices.

Security Checklist

OWASP Top 10

  1. Injection (SQL, NoSQL, OS command, LDAP)

    • Check for parameterized queries
    • Verify input sanitization
    • Review dynamic query construction
  2. Broken Authentication

    • Password storage (bcrypt, argon2)
    • Session management
    • Multi-factor authentication
    • Password reset flows
  3. Sensitive Data Exposure

    • Encryption at rest and in transit
    • Proper key management
    • PII handling
  4. XML External Entities (XXE)

    • Disable DTD processing
    • Input validation for XML
  5. Broken Access Control

    • Authorization checks on every endpoint
    • Role-based access control
    • Resource ownership validation
  6. Security Misconfiguration

    • Default credentials removed
    • Error handling doesn't leak info
    • Security headers configured
  7. Cross-Site Scripting (XSS)

    • Output encoding
    • Content Security Policy
    • Input sanitization
  8. Insecure Deserialization

    • Validate serialized data
    • Implement integrity checks
  9. Using Components with Known Vulnerabilities

    • Run npm audit
    • Check for outdated dependencies
  10. Insufficient Logging & Monitoring

    • Security events logged
    • No sensitive data in logs
    • Alerting configured

Additional Checks

  • Secrets in code (API keys, passwords)
  • Environment variable handling
  • CORS configuration
  • Rate limiting
  • CSRF protection
  • Secure cookie flags

Report Format

Critical Issues

[Issues that must be fixed immediately]

High Priority

[Issues that should be fixed before release]

Recommendations

[Security improvements to consider]


IMPORTANT: Security issues are blockers. Do not proceed until critical issues are resolved.

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 · 90 lines · 4 tokens per session scan A 90c9b198ec81

Subscribe to this mod's changes

security is a command published in the GitHub repository affaan-m/ECC (250,130 stars, last pushed today), licensed MIT. It adds 4 tokens to every session and 457 once invoked, about $0.0000 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 2026-09-03.