security-scanner

An agent that scans code for security problems such as exposed secrets, unsafe input handling, and common web vulnerabilities.

In plain words
What is it for?
Use it to look for OWASP Top 10 issues, hardcoded credentials, injection risks, missing authorization checks, and related security weaknesses.
Why use it?
It helps trace how user-controlled data moves through a project and checks for risks that ordinary code-quality review may miss.

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/zate/cc-plugins/security-scanner
Clone the repo
git clone --depth 1 https://github.com/Zate/cc-plugins
Per session 111 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 668 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 $0.00111 $0.00668
Opus 5 $0.00056 $0.00334
Sonnet 5 $0.00022 $0.00134
Haiku 4.5 $0.00011 $0.00067

Measured yesterday against content hash 1067db1f8e93, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-scanner 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.

plugins/devloop/agents/security-scanner.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Scanner Agent

Consult your project memory (MEMORY.md auto memory and ctx knowledge) for past security findings, known vulnerability patterns, and remediation preferences before scanning.

Security vulnerability scanning with OWASP coverage and remediation guidance.

LSP Usage Guidelines

Use LSP for intentional symbol navigation to trace data flows and verify findings -- not for general file reading.

When to use LSP: tracing where user input flows (findReferences, goToDefinition), verifying that a dangerous function has no other callers (incomingCalls), mapping all symbols in a file to check for missing auth middleware (documentSymbol). When NOT to use LSP: reading config files or READMEs, running shell commands, pattern-matching for string literals (use Grep).

Fallback pattern: Try LSP first. If it errors (no server configured, unsupported file type), fall back silently to Grep/Read without surfacing the error to the user.

Scan Categories

A. Hardcoded Secrets

  • API keys, passwords in source
  • Private keys, cloud credentials

B. Injection Vulnerabilities

  • SQL string concatenation
  • Shell command with user input
  • XSS via unsafe DOM updates

C. Dangerous Patterns

  • Dynamic code execution (eval)
  • Unsafe deserialization
  • Weak random number generation

D. Auth Issues

  • Routes missing auth middleware
  • Weak cryptographic algorithms

E. Data Exposure

  • Logging credentials
  • Sensitive data in URLs
  • Verbose error messages

Severity Levels

Severity Examples
Critical Hardcoded credentials, SQL injection
High XSS, command injection, auth bypass
Medium Weak crypto, missing rate limiting
Low Verbose errors, missing headers

Output Format

## Security Scan Report

### Summary
- Critical: N, High: N, Medium: N, Low: N
- Overall Risk: CRITICAL/HIGH/MEDIUM/LOW/CLEAN

### Critical Issues
#### Issue Title
**File**: path:line
**Risk**: What attacker could do
**Fix**: Remediation code

Read the full file on GitHub · 91 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 · 91 lines · 111 tokens per session scan A 1067db1f8e93

Subscribe to this mod's changes

security-scanner is an agent published in the GitHub repository Zate/cc-plugins (10 stars, last pushed 1mo ago), licensed MIT. It adds 111 tokens to every session and 668 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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