security-scanner

security-scanner is an agent for coding agents from Wishmakingfairy/vibecheck. It costs 31 tokens per session (404 once invoked), scanned A, original, MIT.

An agent that performs a broad security review of an entire codebase, including source files and available package dependencies. It creates a vulnerability report with severity levels and CWE references, which are standard labels for types of software weaknesses.

In plain words
What is it for?
Use it to scan applications built with JavaScript, Python, Go, Ruby, PHP, SQL, configuration files, or similar technologies, including checks for authentication, database access, secrets, and infrastructure.
Why use it?
It combines file-by-file checks, dependency audits, and checks across files, helping reveal problems that a single-file review can miss.

Agent

Part of the vibecheck plugin — 4 skills, 1 agent, 1 hook shipped together

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/wishmakingfairy/vibecheck/security-scanner
Clone the repo
git clone --depth 1 https://github.com/Wishmakingfairy/vibecheck

Or install vibecheck, the plugin that ships this one along with the rest of its 4 skills, 1 agent, 1 hook.

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-scanner

README.md
[![agentmods](https://agentmods.dev/badge/agents/wishmakingfairy/vibecheck/security-scanner.svg)](https://agentmods.dev/agents/wishmakingfairy/vibecheck/security-scanner)
Your own site
<a href="https://agentmods.dev/agents/wishmakingfairy/vibecheck/security-scanner"><img src="https://agentmods.dev/badge/agents/wishmakingfairy/vibecheck/security-scanner.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 404 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 $0.00031 $0.00404
Opus 5 $0.00015 $0.00202
Sonnet 5 $0.00006 $0.00081
Haiku 4.5 $0.00003 $0.00040

Measured 4d ago against content hash f2fc1247c1b9, 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 4d 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-scanner.md · 43 lines

What it actually says

Security Scanner Agent

Perform a deep security analysis of the entire codebase.

Scan Process

  1. Stack Detection: Read package.json, requirements.txt, or go.mod to identify the tech stack
  2. File Discovery: Glob for all source files excluding node_modules, dist, .git, vendor
  3. Dependency Audit: Run npm audit or pip audit if available
  4. Source Scan: Read each file and check against all 156 security patterns documented in the reference files
  5. Cross-File Analysis: Check if auth middleware exists for admin routes, if RLS is enabled for DB tables
  6. Report Generation: Produce a categorized markdown report sorted by severity

What to Check

For each file, apply the relevant category checks based on file type:

  • .js/.ts/.jsx/.tsx: secrets, injection, auth, network, AI/LLM, crypto
  • .py: secrets, injection, database, auth, AI/LLM, crypto, filesystem
  • .sql: database, secrets
  • .json: secrets, supply chain (package.json)
  • .yaml/.yml: secrets, infrastructure, supply chain (CI configs)
  • .html: injection, headers, supply chain
  • Dockerfile: infrastructure, secrets, supply chain

Output Format

Produce a structured report with:

  • Summary table (findings by severity per category)
  • Detailed findings sorted by severity (CRITICAL first)
  • Each finding includes: check ID, file path, line reference, CWE, fix suggestion
  • Remediation priority: fix CRITICAL first, then WARNING
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. 4d ago First seen · 43 lines · 31 tokens per session scan A f2fc1247c1b9

Subscribe to this mod's changes

security-scanner is an agent published in the GitHub repository Wishmakingfairy/vibecheck (4 stars, last pushed 5mo ago), licensed MIT. It adds 31 tokens to every session and 404 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 2026-08-31.

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