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-hr-diffgit 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-hr-diff)<a href="https://agentmods.dev/skills/zhang-henry/coevoskills/evo-hr-diff"><img src="https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-hr-diff/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-hr-diff"><img src="https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-hr-diff.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 | $0.00032 | $0.00378 |
| Opus 5 | $0.00016 | $0.00189 |
| Sonnet 5 | $0.00006 | $0.00076 |
| Haiku 4.5 | $0.00003 | $0.00038 |
Grade A, and why
evo-hr-diff 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 12d 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
HR Employee Data Diff Skill
Compares an old PDF employee backup with a current Excel employee database to find deletions and modifications.
Usage
import sys
sys.path.insert(0, '/app/environment/skills/evo-hr-diff/scripts')
from utils import generate_diff_report, validate_report
# Generate the diff report
report = generate_diff_report(
pdf_path='/root/employees_backup.pdf',
excel_path='/root/employees_current.xlsx',
output_path='/root/diff_report.json'
)
# Validate
validate_report('/root/diff_report.json')
print(f"Deleted: {len(report['deleted_employees'])}")
print(f"Modified: {len(report['modified_employees'])}")
Functions
extract_pdf_table(pdf_path)- Extract all rows from multi-page PDF, handling repeated headersclean_pdf_dataframe(df)- Convert PDF string data to proper types (strip commas, cast numerics)load_excel_data(excel_path)- Load Excel with proper type handlingcompare_datasets(old_df, new_df, id_col='ID')- Find deleted IDs and field-level modificationsgenerate_diff_report(pdf_path, excel_path, output_path)- End-to-end pipelinevalidate_report(output_path)- Validate output JSON structure and types
Key Design Decisions
- PDF is treated as OLD data, Excel as NEW (current)
- Repeated PDF headers on each page are deduplicated
- Salary/Years output as int, Score as float (or int if whole number)
- Text fields compared as stripped strings
- Results sorted by employee ID
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.
- 12d ago First seen · 46 lines · 32 tokens per session scan A e4453f9d13fd
evo-hr-diff is a skill published in the GitHub repository Zhang-Henry/CoEvoSkills (66 stars, last pushed 22d ago), licensed Apache-2.0. It adds 32 tokens to every session and 378 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.
Other skills, from other repositories
doc-reader
Read any common document/data file — PDF, Word (.docx), Excel (.xlsx/.xls), PowerPoint (.pptx), images (OCR), CSV/TSV, plain text, JSON/YAML/TOML, HTML/XML, and most source-code files. Use the readdocument tool.
skill-doc-delivery
Convert markdown to DOCX, PPTX, XLSX, PDF office documents — use when you need exportable deliverables.
unified-deliverable-workflow
Generate spreadsheets, diagrams, and PDF reports with iteration budgeting and error recovery.
document-python-direct-exec
Use direct Python execution for reliable spreadsheet and document/PDF generation operations.
document-direct-python
Use direct Python execution for reliable document creation including spreadsheets, PDFs, and structured reports.
document-python-direct
Use direct Python execution for reliable spreadsheet and document/PDF generation operations.