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 Rylaispirit/rylai-codex-hermes-skills --skill xlsxgit clone --depth 1 https://github.com/Rylaispirit/rylai-codex-hermes-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/rylaispirit/rylai-codex-hermes-skills/xlsx)<a href="https://agentmods.dev/skills/rylaispirit/rylai-codex-hermes-skills/xlsx"><img src="https://agentmods.dev/badge/skills/rylaispirit/rylai-codex-hermes-skills/xlsx/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/rylaispirit/rylai-codex-hermes-skills/xlsx"><img src="https://agentmods.dev/badge/skills/rylaispirit/rylai-codex-hermes-skills/xlsx.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 | $0.00037 | $0.00653 |
| Opus 5 | $0.00018 | $0.00327 |
| Sonnet 5 | $0.00007 | $0.00131 |
| Haiku 4.5 | $0.00004 | $0.00065 |
Grade A, and why
xlsx 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.
How it starts
The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Rylai XLSX
This is an original Rylai Codex-Hermes-Claude workflow. Use the open-source
openpyxl package for workbook operations and LibreOffice only for optional
formula recalculation or PDF rendering.
Runtime
- Required for the bundled script: Python 3 and
openpyxl. - Optional: LibreOffice (
soffice) for recalculation and PDF rendering. - Resolve
scripts/xlsx_tool.pyrelative to this skill folder. - Do not install packages unless the user approves installation.
- Set workbook creator and last editor to
Rylaiunless the user explicitly requests another author.
Workflow
- Inspect the workbook or source table before changing it.
- Preserve existing sheet names, formulas, and styles unless the task requires a change.
- Save to a new output path instead of overwriting the source.
- Reopen the saved workbook and inspect formula and error counts.
- When formula results must be refreshed, use LibreOffice recalculation if it is available.
Bundled CLI
Create a styled workbook from CSV or TSV:
python scripts/xlsx_tool.py create input.csv output.xlsx --sheet Data
python scripts/xlsx_tool.py create input.tsv output.xlsx --delimiter tab
Inspect workbook structure, formulas, and visible spreadsheet errors:
python scripts/xlsx_tool.py inspect output.xlsx
Update cells or formulas while keeping the source unchanged:
python scripts/xlsx_tool.py set input.xlsx output.xlsx \
--cell "Summary!B2=1250" \
--cell "Summary!B3==SUM(Data!B2:B20)"
The first = separates the cell address from its value. A formula therefore
uses a second =.
Recalculate formulas through a LibreOffice save round trip:
python scripts/xlsx_tool.py recalc input.xlsx recalculated.xlsx
Render workbook sheets to PDF:
python scripts/xlsx_tool.py render input.xlsx rendered
Quality Rules
- Use formulas for values that should update when inputs change.
- Keep identifiers with leading zeroes as text.
- Freeze the header and enable filters for newly created data tables.
- Use clear number formats for dates, percentages, currency, and totals.
- Treat
#REF!,#DIV/0!,#VALUE!,#NAME?,#N/A, and#NUM!as delivery blockers unless the user explicitly expects them. - Report that recalculation or visual verification was skipped when LibreOffice is unavailable.
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.
- 12d ago First seen · 89 lines · 37 tokens per session scan A 288199e3dfdc
xlsx is a skill published in the GitHub repository Rylaispirit/rylai-codex-hermes-skills (55 stars, last pushed 29d ago), licensed MIT. It adds 37 tokens to every session and 653 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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