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 Zhang-Henry/CoEvoSkills --skill evo-invoice-fraudgit clone --depth 1 https://github.com/Zhang-Henry/CoEvoSkillsWrote 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/zhang-henry/coevoskills/evo-invoice-fraud)<a href="https://agentmods.dev/skills/zhang-henry/coevoskills/evo-invoice-fraud"><img src="https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-invoice-fraud/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/zhang-henry/coevoskills/evo-invoice-fraud"><img src="https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-invoice-fraud.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 | $0.00046 | $0.00241 |
| Opus 5 | $0.00023 | $0.00120 |
| Sonnet 5 | $0.00009 | $0.00048 |
| Haiku 4.5 | $0.00005 | $0.00024 |
Grade A, and why
evo-invoice-fraud 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 13d 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.
What it actually says
Invoice Fraud Detection Skill
Quick Start
import sys
sys.path.insert(0, '/app/environment/skills/evo-invoice-fraud/scripts')
from utils import run_fraud_detection, validate_report
report = run_fraud_detection(
pdf_path='/root/invoices.pdf',
vendors_path='/root/vendors.xlsx',
po_path='/root/purchase_orders.csv',
output_path='/root/fraud_report.json'
)
validate_report('/root/fraud_report.json')
Key Features
- PO dominant-pattern filtering: Detects dominant vendor ID pattern in POs and excludes non-conforming entries
- All vendors included: Vendor master is loaded without filtering
- Auto-calibrated fuzzy threshold: Derived from score distribution gap analysis
- Priority-ordered fraud checks: Unknown Vendor > IBAN Mismatch > Invalid PO > Amount Mismatch > Vendor Mismatch
What ships with it
1 file 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.
- 13d ago First seen · 29 lines · 46 tokens per session scan A eb0115db729c
evo-invoice-fraud is a skill published in the GitHub repository Zhang-Henry/CoEvoSkills (66 stars, last pushed 23d ago), licensed Apache-2.0. It adds 46 tokens to every session and 241 once invoked, about $0.0002 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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