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 agentmods add skills/squadcodercom/squadcoder/israeli-id-validatornpx skills add squadcodercom/squadcoder --skill israeli-id-validatorgit clone --depth 1 https://github.com/squadcodercom/squadcoderWhat 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 | $0.00147 | $0.02515 |
| Opus 5 | $0.00073 | $0.01257 |
| Sonnet 5 | $0.00029 | $0.00503 |
| Haiku 4.5 | $0.00015 | $0.00251 |
Grade A, and why
israeli-id-validator 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 2d 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 — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Israeli ID Validator
Instructions
Step 1: Identify ID Type
| Type | Prefix | Length | Example | Notes |
|---|---|---|---|---|
| Teudat Zehut (personal ID) | none (cannot be inferred) | 9 digits | 123456782 | Assigned sequentially; the digits encode NO birth date, age, or residency status |
| Corporate / registered entity | first digit 5 | 9 digits | 51-530820-3 | Lives in the 5XX-million block; the number begins with 5 and the second digit selects the entity type (codes 50-59, see next table). Same check digit as a personal ID |
Corporate and registered-entity codes (first two digits):
| Prefix | Entity |
|---|---|
| 50 | Government company, pension/provident fund, or local committee |
| 51 | Private company (Chevra Ba'am / Ltd) |
| 52 | Public company |
| 53 | Mandatory partnership |
| 54 | General partnership |
| 55 | Partnership (Shutafut) |
| 56 | Foreign company |
| 57 | Cooperative society (Aguda Shitufit) / kibbutz |
| 58 | Amuta (non-profit) / public-benefit company |
| 59 | Endowment (Hekdesh) |
Prefix-based typing is a heuristic: a 9-digit number starting with 5 is overwhelmingly a registered entity (corporate numbers are allocated from the 5XX block), but only the issuing registry is authoritative. A personal Teudat Zehut cannot be typed from its prefix.
Step 2: Validate Using Check Digit Algorithm
The Israeli ID check digit algorithm (applies to all types):
def validate_israeli_id(id_number: str) -> bool:
"""Validate Israeli ID number (TZ, company, amuta, etc.)"""
# Remove dashes and spaces, pad to 9 digits
id_str = id_number.replace('-', '').replace(' ', '').zfill(9)
if len(id_str) != 9 or not id_str.isdigit():
return False
if id_str == '000000000': # passes Luhn but is never a real ID
return False
total = 0
for i, digit in enumerate(id_str):
# Position counting from left: odd positions (0,2,4,6,8) multiply by 1
# Even positions (1,3,5,7) multiply by 2
weight = 1 if i % 2 == 0 else 2
val = int(digit) * weight
if val > 9:
val = val // 10 + val % 10 # Sum digits if > 9
total += val
return total % 10 == 0
What ships with it
6 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.
- 2d ago First seen · 155 lines · 147 tokens per session scan A 9e895b463199
israeli-id-validator is a skill published in the GitHub repository squadcodercom/squadcoder (11 stars, last pushed 2mo ago), licensed MIT. It adds 147 tokens to every session and 2,515 once invoked, about $0.0007 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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