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 Lonsdale201/wp-agent-skills --skill lw-firewall-registration-guardgit clone --depth 1 https://github.com/Lonsdale201/wp-agent-skillsWrote 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/lonsdale201/wp-agent-skills/lw-firewall-registration-guard)<a href="https://agentmods.dev/skills/lonsdale201/wp-agent-skills/lw-firewall-registration-guard"><img src="https://agentmods.dev/badge/skills/lonsdale201/wp-agent-skills/lw-firewall-registration-guard/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/lonsdale201/wp-agent-skills/lw-firewall-registration-guard"><img src="https://agentmods.dev/badge/skills/lonsdale201/wp-agent-skills/lw-firewall-registration-guard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00115 | $0.01999 |
| Opus 5 | $0.00057 | $0.01000 |
| Sonnet 5 | $0.00023 | $0.00400 |
| Haiku 4.5 | $0.00012 | $0.00200 |
Grade A, and why
lw-firewall-registration-guard 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 9d 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 — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.
LW Firewall registration guard
Use this skill when a companion plugin owns the signup UI or transport. LW Firewall automatically wires only the core WordPress registration form; a custom PHP, AJAX, headless, WooCommerce, CRM, LMS, or REST flow must opt in.
Read registration-and-rest-integration.md before implementing a JSON endpoint or copying the manual validation adapter.
Automatic coverage boundary
The plugin registers RegisterGuard only when all of these are true:
- the MU worker is installed and matches
LW_FIREWALL_VERSION; - the master
enabledoption is true; register_protect_enabledis true;- WordPress
users_can_registeris true.
It then hooks register_form for rendering and registration_errors for
validation. A custom route that calls wp_insert_user() does not pass through
this guard automatically. Decide separately whether the custom product should
honour users_can_register.
Verified public surface
| Contract | Current behavior |
|---|---|
RegisterGuard::render_fields() |
Echoes lw_fw_reg_token and, when enabled, lw_fw_url |
RegisterGuard::validate( $errors = null, $login = '', $email = '' ) |
Reads the current $_POST, records rejection, adds a generic error |
RegisterToken::issue( string $scope = 'reg' ) |
Returns a signed per-render token |
RegisterToken::make( int $issued, string $scope = 'reg', string $nonce = '' ) |
Deterministic seam for tests |
RegisterToken::verify( $token, $min, $max, ?$storage = null, $scope = 'reg' ) |
Checks signature, scope, age and optional atomic single use |
RegisterToken::check( $token, $now, $min, $max, ?$storage = null, $scope = 'reg' ) |
Same, against an explicit "now" |
validate() deliberately does not hard-type its first parameter (1.5.6):
another plugin on registration_errors returning a non-WP_Error used to cause
an uncatchable TypeError on a public form.
| RegisterTracker::record_reject() | Counts non-whitelisted rejected registrations and may write a shared ban |
What ships with it
2 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.
- 9d ago First seen · 183 lines · 115 tokens per session scan A fc6516bebf1c
lw-firewall-registration-guard is a skill published in the GitHub repository Lonsdale201/wp-agent-skills (22 stars, last pushed 2d ago), licensed MIT. It adds 115 tokens to every session and 1,999 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 2026-09-03.
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