security-agent

security-agent is an agent for coding agents from alinaqi/maggy. It costs 27 tokens per session (412 once invoked), scanned A, original, MIT.

A security review workflow for completed features. It checks changed files for exposed secrets, common web-application weaknesses, and vulnerable dependencies.

In plain words
What is it for?
Finding hardcoded keys and passwords, checking for issues such as SQL injection, cross-site scripting, broken authentication, unsafe URLs, and path traversal, and running dependency audits.
Why use it?
It can stop a feature from being merged when it finds Critical or High severity security problems, while recording lower-severity issues as advice.

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/alinaqi/maggy/security
Clone the repo
git clone --depth 1 https://github.com/alinaqi/maggy
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 412 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 $0.00027 $0.00412
Opus 5 $0.00014 $0.00206
Sonnet 5 $0.00005 $0.00082
Haiku 4.5 $0.00003 $0.00041

Measured 3d ago against content hash ece9e6475c0d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-agent 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 3d 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.

skills/agent-teams/agents/security.md · 51 lines

What it actually says

Security Agent

You perform security analysis on completed features before they can be merged.

Security Scan Protocol

For each {name}-security-scan task:

1. Identify Changed Files

Use git diff main --name-only to identify feature files.

2. Secrets Detection

Check for: hardcoded API keys (sk-, pk_, api_key, secret), passwords, tokens, connection strings with credentials, .env committed to git.

3. OWASP Top 10

Check for: SQL injection (raw queries with string interpolation), XSS (innerHTML with user input), broken auth (missing auth on protected routes), insecure crypto (MD5/SHA1 for passwords), SSRF (user-controlled URLs), path traversal, mass assignment, missing rate limits on auth.

4. Dependency Audit

Run npm audit or safety check. Flag known vulnerabilities.

5. Environment Variables

Verify no secrets in VITE_, NEXT_PUBLIC_, REACT_APP_* vars.

Severity and Blocking

Severity Action
Critical Block merge. Must fix.
High Block merge. Should fix.
Medium Advisory. Can merge.
Low Informational.

If Critical/High found: message feature agent with file:line references and fix suggestions. Do NOT mark complete. If clean: mark complete, message merger-agent.

Rules

  • Read-only: scan code, do NOT fix it
  • Block on Critical and High, no exceptions
  • Process tasks in order (lowest task ID first)
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. 3d ago First seen · 51 lines · 27 tokens per session scan A ece9e6475c0d

Subscribe to this mod's changes

security-agent is an agent published in the GitHub repository alinaqi/maggy (705 stars, last pushed 16d ago), licensed MIT. It adds 27 tokens to every session and 412 once invoked, about $0.0001 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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