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.
npx skills add JayRHa/AgentSkills --skill secure-password-policygit clone --depth 1 https://github.com/JayRHa/AgentSkillsWrote 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.
[](https://agentmods.dev/skills/jayrha/agentskills/secure-password-policy)<a href="https://agentmods.dev/skills/jayrha/agentskills/secure-password-policy"><img src="https://agentmods.dev/badge/skills/jayrha/agentskills/secure-password-policy/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/jayrha/agentskills/secure-password-policy"><img src="https://agentmods.dev/badge/skills/jayrha/agentskills/secure-password-policy.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00100 | $0.01846 |
| Opus 5.5 | $0.00040 | $0.00738 |
| Sonnet 5.5 | $0.00020 | $0.00369 |
| Haiku 4.5 | $0.00010 | $0.00185 |
Grade A, and why
secure-password-policy 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Secure Password Policy (NIST SP 800-63B)
Overview
This skill produces and reviews authentication and password policies that follow current NIST Digital Identity Guidelines (SP 800-63B) rather than legacy "complexity rule" folklore. The modern consensus inverts much of the 2003-era advice: favor LONG passphrases, screen against breach/blocklists, drop forced periodic rotation, drop composition rules, and lean on phishing-resistant MFA plus strong server-side hashing.
Keywords: password policy, NIST 800-63B, authentication, AAL, memorized secret, passphrase, password length, breach screening, Have I Been Pwned, password complexity, password rotation, MFA, 2FA, TOTP, WebAuthn, passkeys, rate limiting, account lockout, Argon2, bcrypt, scrypt, PBKDF2, password storage, salt, pepper, credential stuffing, account recovery, password reset.
Use this skill to: author a policy document, translate it into concrete engineering requirements, choose a password hashing configuration, or audit a sign-in flow.
Core Principles (the NIST inversion)
| Topic | Legacy advice (avoid) | NIST 800-63B (adopt) |
|---|---|---|
| Length | 8 chars | Min 8, recommend 12-15+; allow at least 64 |
| Composition | Require upper/lower/digit/symbol | Do NOT impose composition rules |
| Allowed chars | Restrict symbols | Allow all printable ASCII + Unicode + spaces |
| Rotation | Force change every 60-90 days | Do NOT force periodic change; rotate only on evidence of compromise |
| Hints / security questions | Allowed | Prohibited as authenticators |
| Breach check | None | Screen against known-compromised/blocklist values |
| Truncation | Common | Never silently truncate; accept full input |
| Paste in password fields | Blocked | Always allow paste (supports password managers) |
| Show password | Hidden always | Offer "show password" toggle |
The single highest-leverage controls are: (1) breach/blocklist screening at set-time, (2) a strong, salted, memory-hard hash for storage, (3) rate limiting + MFA against online guessing. Composition rules and forced rotation actively hurt usability with little security gain.
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 131 lines · 100 tokens per session scan A 698f0738b9da
secure-password-policy is a skill published in the GitHub repository JayRHa/AgentSkills (12 stars, last pushed 2mo ago), licensed MIT. It adds 100 tokens to every session and 1,846 once invoked, about $0.0004 per session on Opus 5.5. 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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