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/andreaskarz/vibe-coding-dev-setup/xlsxnpx skills add AndreasKarz/Vibe-Coding-Dev-Setup --skill xlsxgit clone --depth 1 https://github.com/AndreasKarz/Vibe-Coding-Dev-SetupWhat 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 | $0.00201 | $0.02835 |
| Opus 5 | $0.00101 | $0.01418 |
| Sonnet 5 | $0.00040 | $0.00567 |
| Haiku 4.5 | $0.00020 | $0.00283 |
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 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
53 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.
- LICENSE.txt 1.4 KB
- scripts/office/helpers/__init__.py 0 B runs code
- scripts/office/helpers/merge_runs.py 5.4 KB runs code
- scripts/office/helpers/simplify_redlines.py 5.6 KB runs code
- scripts/office/pack.py 4.9 KB runs code
- scripts/office/schemas/ecma/fouth-edition/opc-contentTypes.xsd 1.9 KB
- scripts/office/schemas/ecma/fouth-edition/opc-coreProperties.xsd 2.5 KB
- scripts/office/schemas/ecma/fouth-edition/opc-digSig.xsd 2.8 KB
- scripts/office/schemas/ecma/fouth-edition/opc-relationships.xsd 1.3 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-chart.xsd 73 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-chartDrawing.xsd 6.8 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-diagram.xsd 50 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-lockedCanvas.xsd 624 B
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-main.xsd 148 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-picture.xsd 1.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-spreadsheetDrawing.xsd 8.7 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-wordprocessingDrawing.xsd 14 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/pml.xsd 82 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-additionalCharacteristics.xsd 1.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-bibliography.xsd 7.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-commonSimpleTypes.xsd 6.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-customXmlDataProperties.xsd 1.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-customXmlSchemaProperties.xsd 880 B
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesCustom.xsd 2.5 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesExtended.xsd 3.4 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesVariantTypes.xsd 7.3 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-math.xsd 23 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-relationshipReference.xsd 1.3 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/sml.xsd 237 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-main.xsd 26 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-officeDrawing.xsd 25 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-presentationDrawing.xsd 535 B
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-spreadsheetDrawing.xsd 5.6 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-wordprocessingDrawing.xsd 3.9 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/wml.xsd 167 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/xml.xsd 4.5 KB
- scripts/office/schemas/mce/mc.xsd 3.1 KB
- scripts/office/schemas/microsoft/wml-2010.xsd 26 KB
- scripts/office/schemas/microsoft/wml-2012.xsd 3.7 KB
- scripts/office/schemas/microsoft/wml-2018.xsd 901 B
- scripts/office/schemas/microsoft/wml-cex-2018.xsd 1.7 KB
- scripts/office/schemas/microsoft/wml-cid-2016.xsd 1002 B
- scripts/office/schemas/microsoft/wml-sdtdatahash-2020.xsd 600 B
- scripts/office/schemas/microsoft/wml-symex-2015.xsd 745 B
- scripts/office/soffice.py 5.2 KB runs code
- scripts/office/unpack.py 4.0 KB runs code
- scripts/office/validate.py 3.6 KB runs code
- scripts/office/validators/__init__.py 336 B runs code
- scripts/office/validators/base.py 32 KB runs code
- scripts/office/validators/docx.py 16 KB runs code
- scripts/office/validators/pptx.py 9.6 KB runs code
- scripts/office/validators/redlining.py 8.7 KB runs code
- scripts/recalc.py 5.6 KB runs code
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 · 292 lines · 201 tokens per session scan A dd316db7785a
xlsx is a skill published in the GitHub repository AndreasKarz/Vibe-Coding-Dev-Setup (7 stars, last pushed 6mo ago), with no licence file. It adds 201 tokens to every session and 2,835 once invoked, about $0.0010 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 2026-08-31.
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