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 enlivenapp/Codeigniter4-App-and-API-Skills-for-Claude-Code --skill ci4-shieldgit clone --depth 1 https://github.com/enlivenapp/Codeigniter4-App-and-API-Skills-for-Claude-CodeWrote 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/enlivenapp/codeigniter4-app-and-api-skills-for-claude-code/ci4-shield)<a href="https://agentmods.dev/skills/enlivenapp/codeigniter4-app-and-api-skills-for-claude-code/ci4-shield"><img src="https://agentmods.dev/badge/skills/enlivenapp/codeigniter4-app-and-api-skills-for-claude-code/ci4-shield.svg" alt="Measured on agentmods" 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 | $0.00129 | $0.01741 |
| Opus 5 | $0.00064 | $0.00870 |
| Sonnet 5 | $0.00026 | $0.00348 |
| Haiku 4.5 | $0.00013 | $0.00174 |
Grade A, and why
ci4-shield 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 8d 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 — 199 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CodeIgniter 4 Shield — Auth Reference
Shield is the official authentication and authorization library for CodeIgniter 4. It is not Laravel Sanctum, Passport, or Breeze. Do not apply Laravel auth patterns here.
Related skills:
ci4for core framework patterns,ci4-apifor REST API patterns.
Reference Documents
For deep dives, read the relevant reference from references/:
| Reference | When to read |
|---|---|
references/configuration.md |
Auth.php, AuthGroups.php, password validators, views, authenticators |
references/session-auth.md |
Login/logout flow, remember me, web authentication |
references/token-auth.md |
Access tokens, HMAC tokens, JWT — generation, revocation, scopes |
references/groups-permissions.md |
Groups, permissions, matrix, direct user permissions, wildcards |
references/user-model.md |
User entity, UserModel, extending, creating/finding/updating users |
references/filters.md |
All Shield filters, route protection, filter arguments |
references/actions.md |
Email activation, Email 2FA, magic links, password handling, banning |
references/events-customization.md |
Events, custom views, extending controllers, routes, testing |
Installation & Setup
composer require codeigniter4/shield
php spark shield:setup # publishes Config files + migrations
php spark migrate # creates Shield's database tables
Database Tables
| Table | Purpose |
|---|---|
users |
Core user data (username, active, last_active) |
auth_identities |
All credential types (email/password, access tokens, HMAC keys) |
auth_logins |
Login attempt log (success + failure) |
auth_remember_tokens |
Remember-me tokens |
auth_groups_users |
User-to-group pivot |
auth_permissions_users |
User-to-permission pivot |
Auth Helper — Core Functions
The auth() helper is globally available. No manual loading needed.
auth()->loggedIn(); // bool — is someone logged in?
auth()->user(); // User entity or null
auth()->id(); // int user ID or null
// Specify authenticator
auth('session')->loggedIn();
auth('tokens')->user();
// Attempt login
$result = auth()->attempt([
'email' => $email,
'password' => $password,
]);
if ($result->isOK()) { /* success */ }
// $result->reason() — error message on failure
// Logout
auth()->logout();
// Check credentials without logging in
$result = auth()->check(['email' => $email, 'password' => $password]);
What ships with it
8 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.
- 8d ago First seen · 199 lines · 129 tokens per session scan A ed5606ba4253
ci4-shield is a skill published in the GitHub repository enlivenapp/Codeigniter4-App-and-API-Skills-for-Claude-Code (22 stars, last pushed 5mo ago), licensed MIT. It adds 129 tokens to every session and 1,741 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 2026-08-30.
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