security

security is a skill for Claude Code, Codex from Effulgent-Point/paw. It costs 0 tokens per session (582 once invoked), scanned A, original, MIT.

A security checklist for code involving login systems, user-provided data, external services, or sensitive information. It covers common web risks such as weak access controls, injection, unsafe settings, and exposed data.

In plain words
What is it for?
Use it to review authentication, input validation, API calls, dependency risks, logging, encryption, and outbound requests.
Why use it?
It helps developers find security weaknesses at the system boundaries and before deployment.

Skill for Claude CodeCodex

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 skills/effulgent-point/paw/security
Any agent
npx skills add Effulgent-Point/paw --skill security
Clone the repo
git clone --depth 1 https://github.com/Effulgent-Point/paw

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 582 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 $0.00000 $0.00582
Opus 5 $0.00000 $0.00291
Sonnet 5 $0.00000 $0.00116
Haiku 4.5 $0.00000 $0.00058

Measured 3d ago against content hash d96b8ce7f24d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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/security/SKILL.md · 62 lines

How it starts

The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Skill

When to use: Any code touching authentication, user input, external APIs, or sensitive data.

OWASP Top 10 cheat sheet

# Category One-line check
A01 Broken access control Is authz checked at the endpoint boundary, not just the UI?
A02 Crypto failures Any weak algorithms (MD5, SHA1 for passwords)? Plaintext sensitive data?
A03 Injection Is every query parameterized? Any string interpolation into SQL/commands?
A04 Insecure design Was there a threat model? Or just hoping for the best?
A05 Misconfiguration Debug mode off in prod? Default credentials removed? CORS restrictive?
A06 Vulnerable components Dependencies audited for CVEs?
A07 Auth failures Session fixation possible? Password policy enforced?
A08 Data integrity Updates signed? CI inputs trusted?
A09 Logging failures Security events logged? PII NOT logged?
A10 SSRF Outbound requests validated? DNS rebinding mitigated?

Input validation patterns

  • Validate at the boundary — first point where external data enters your system
  • Check: type, length, format, range, encoding
  • Reject early — don't process invalid input hoping it works out
  • Prefer allowlists (define what's valid) over denylists (define what's invalid)

Output encoding

Context-dependent — there is no universal "escape":

Context Encoding
HTML body HTML entity encode (<, >, &)
HTML attribute Attribute encode + quote the attribute
JavaScript JS string encode, or use JSON.stringify
SQL Parameterized queries (not escaping)
URL URL encode (encodeURIComponent)

Secret management

  • Environment variables or secret manager (Vault, AWS SSM, GCP Secret Manager)
  • Never in source code, never in git history
  • Rotate immediately on any leak — investigate after
  • Different secrets per environment
  • Short-lived tokens preferred over long-lived API keys

PII handling

Read the full file on GitHub · 62 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. 3d ago First seen · 62 lines · 0 tokens per session scan A d96b8ce7f24d

Subscribe to this mod's changes

security is a skill published in the GitHub repository Effulgent-Point/paw (2 stars, last pushed 23d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 582 tokens. 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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