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 arozumenko/sdlc-skills --skill xlsx-readergit clone --depth 1 https://github.com/arozumenko/sdlc-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/arozumenko/sdlc-skills/xlsx-reader)<a href="https://agentmods.dev/skills/arozumenko/sdlc-skills/xlsx-reader"><img src="https://agentmods.dev/badge/skills/arozumenko/sdlc-skills/xlsx-reader/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/arozumenko/sdlc-skills/xlsx-reader"><img src="https://agentmods.dev/badge/skills/arozumenko/sdlc-skills/xlsx-reader.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 | $0.00050 | $0.00463 |
| Opus 5 | $0.00025 | $0.00231 |
| Sonnet 5 | $0.00010 | $0.00093 |
| Haiku 4.5 | $0.00005 | $0.00046 |
Grade A, and why
xlsx-reader 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 9d 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
xlsx-reader
Converts every sheet in an .xlsx or .xls workbook into a Markdown table (first row = header) so that an LLM agent can read and reason over spreadsheet content without needing a binary parser.
When to use
- The user drops an Excel file of test cases, a requirements matrix, or a QA checklist into the conversation.
- A task requires reading structured tabular data from a
.xlsx/.xlssource (e.g. "import these test cases", "summarise this checklist"). - You need machine-readable rows from a spreadsheet before feeding them to another skill (e.g.
xray-testing,test-case-analysis).
Usage
node scripts/read_xlsx.js <input.xlsx> [output.md]
- Sheet → table — each sheet becomes an
## SheetNamesection followed by a GitHub-Flavoured Markdown table; the first row is used as the header row. - Stdout vs file — omit
output.mdto print the Markdown to stdout (pipe-friendly); supply a path to write to a file instead. - Missing package — if the
xlsxnpm package is not installed the script exits with a clear message:Install it with: npm i xlsx.
Notes
- After writing to a file, read the produced Markdown back with the
Readtool to bring the content into the agent's context. - For large workbooks with many sheets, convert only the relevant sheet by trimming the output (e.g. filtering on the
## <SheetName>headings) — avoid overwhelming the context window.
What ships with it
3 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.
- 9d ago First seen · 36 lines · 50 tokens per session scan A 2b767a63d5af
xlsx-reader is a skill published in the GitHub repository arozumenko/sdlc-skills (20 stars, last pushed 5d ago), licensed MIT. It adds 50 tokens to every session and 463 once invoked, about $0.0003 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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