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 skills-il/tax-and-finance --skill israeli-arnona-optimizergit clone --depth 1 https://github.com/skills-il/tax-and-financeWrote 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/skills-il/tax-and-finance/israeli-arnona-optimizer)<a href="https://agentmods.dev/skills/skills-il/tax-and-finance/israeli-arnona-optimizer"><img src="https://agentmods.dev/badge/skills/skills-il/tax-and-finance/israeli-arnona-optimizer/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/skills-il/tax-and-finance/israeli-arnona-optimizer"><img src="https://agentmods.dev/badge/skills/skills-il/tax-and-finance/israeli-arnona-optimizer.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 | $0.00140 | $0.07702 |
| Opus 5.5 | $0.00056 | $0.03081 |
| Sonnet 5.5 | $0.00028 | $0.01540 |
| Haiku 4.5 | $0.00014 | $0.00770 |
Grade A, and why
israeli-arnona-optimizer 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 21d 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 — 256 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Israeli Arnona Optimizer
Legal notice
This is a free information tool operated by an AI model. It explains the tax rules and helps you organise your own figures. All of its outputs are produced automatically by an AI model, with no involvement, review, or approval by a tax adviser or accountant. The output is not a tax opinion, not a return prepared by a licensed representative, and not professional advice, but a general calculation and explanation only: it does not examine the full extent of your income or your complete documents. An AI model may err, omit data, or present a wrong conclusion.
Any form or text this tool produces is an automatic draft for your personal preparation only, and is not a filed return. Responsibility for reporting and for paying the tax is yours, the binding computation is the Tax Authority's, and representation before the Tax Authority is reserved to those permitted by law. This tool is not a substitute for advice that takes account of the particular circumstances and needs of each person. Consult a tax adviser or accountant before filing or paying. All use of its output is the user's sole responsibility.
Instructions
Step 1: Gather Property and Household Details
Before calculating anything, collect:
- Municipality (iriya) or local council.
- The bill's own codes: zone (azor), building type or size class, and charged area. Every city keys its residential rate on zone AND a building type or size class, so ask for the bill rather than guessing from the address.
- Usage type: residential (megurim), or offices, commerce, industry and so on. The calculator carries residential tables only.
- Who the holder (machzik) is. The holder is whoever actually holds the property as owner, tenant or otherwise (Municipalities Ordinance s.1). A holder who leaves stays liable until they give the municipality written notice (s.325). On a sale, or a lease of a year or more, the seller or landlord must notify the municipality and name the buyer or tenant, or stays liable for whatever they do not pay; on a lease shorter than a year the landlord is liable (s.326). Every discount and every objection belongs to the holder, not automatically to the owner.
- Who lives in the flat. The Reg. 2(a)(8) income test counts the holder AND everyone living with them, and picks the row by the number of people living there. For a divorced or separated parent, ask whether the children actually live with them: the household size, the income-test row, and whether a single-parent row can apply at all all turn on it.
- Which fiscal year the question is about. In October to December the user is often deciding about both the current year and the next one.
What ships with it
9 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.
- 21d ago Changed · -17 lines 51fa6d2c23c7
- 1mo ago Changed · +14 lines 773fc9fdd234
- 1mo ago First seen · 259 lines · 140 tokens per session scan A 3f3fce393b9d
israeli-arnona-optimizer is a skill published in the GitHub repository skills-il/tax-and-finance (38 stars, last pushed yesterday), licensed MIT. It adds 140 tokens to every session and 7,702 once invoked, about $0.0006 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 2026-08-30.
Other skills, from other repositories
expense-review-policy
Review invoices and contracts against accounts-payable policy before human approval.
audit-support
Support SOX 404 compliance with control testing methodology, sample selection, and documentation standards. Use when generating testing workpapers, selecting audit samples, classifying control deficiencies, or preparing for internal or external audits.
kyc-doc-parse
Parse an investor or client onboarding packet into structured KYC fields — identity, ownership, control, source of funds, and document inventory. Use as the first step of KYC screening; output feeds the rules engine.
ma-playbook
M&A strategy for acquiring companies or being acquired. Due diligence, valuation, integration, and deal structure. Use when evaluating acquisitions, preparing for acquisition, M&A due diligence, integration planning, or deal negotiation.
subcontractor-payment-tracker
Track subcontractor payments, lien waivers, and compliance. Manage payment schedules and documentation.
fiscaliste
Fiscaliste IA pour la fiscalité personnelle des particuliers français : optimisation et déclaration de l'impôt sur le revenu, IFI, revenus du capital, revenus fonciers, equity salarial, crypto-actifs et PER. Couvre le calcul de l'IR (barème, quotient familial, décote, PAS, CEHR, revenus exceptionnels), la déclaration…