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 darellchua2/opencode-config-template --skill xlsx-specialist-skillgit clone --depth 1 https://github.com/darellchua2/opencode-config-templateWrote 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/darellchua2/opencode-config-template/xlsx-specialist-skill)<a href="https://agentmods.dev/skills/darellchua2/opencode-config-template/xlsx-specialist-skill"><img src="https://agentmods.dev/badge/skills/darellchua2/opencode-config-template/xlsx-specialist-skill/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/darellchua2/opencode-config-template/xlsx-specialist-skill"><img src="https://agentmods.dev/badge/skills/darellchua2/opencode-config-template/xlsx-specialist-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00051 | $0.03905 |
| Opus 5 | $0.00026 | $0.01953 |
| Sonnet 5 | $0.00010 | $0.00781 |
| Haiku 4.5 | $0.00005 | $0.00391 |
Grade B, and why
xlsx-specialist-skill scanned grade B with 1 finding 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 5d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt-get install libreoffice How it starts
The opening of the file, as written. The whole thing — 413 lines — stays where its author put it; the contents beside it link to each section on GitHub.
What I do
- Create, edit, and manipulate Excel spreadsheets (.xlsx, .xlsm) and other tabular formats (.csv, .tsv)
- Build financial models with industry-standard color coding, number formatting, and formula construction
- Recalculate all formulas using LibreOffice and verify zero Excel errors (#REF!, #DIV/0!, #VALUE!, #N/A, #NAME?)
- Analyze data with pandas and build spreadsheets with openpyxl for complex formatting and formulas
- Convert between tabular file formats while preserving data integrity
- Clean and restructure messy tabular data into properly formatted spreadsheets
When to use me
Use me when you need to work with spreadsheet files as the primary deliverable:
- Creating spreadsheets: Build new Excel files from scratch or convert other data sources (JSON, CSV, databases) to .xlsx
- Editing spreadsheets: Modify existing .xlsx files (add columns, compute formulas, apply formatting, create charts, clean data)
- Financial modeling: Build professional financial models with proper color coding (blue=hardcoded, black=formulas, green=cross-sheet, red=external, yellow=assumptions)
- Formula verification: Recalculate and verify all formulas work correctly with zero errors
- Data analysis: Read and analyze Excel data with pandas for statistics, filtering, transformations
- Data cleaning: Fix malformed rows, misplaced headers, junk data in tabular files
- Format conversion: Convert between .xlsx, .xlsm, .csv, .tsv formats
Do NOT use me when the primary deliverable is:
- Word documents (.docx)
- PDFs
- HTML reports
- Standalone Python scripts
- Database pipelines
- Google Sheets API integration (even if tabular data is involved)
Prerequisites
Required Tools
- LibreOffice (for formula recalculation)
- Automatically configured on first run of
scripts/recalc.py - Works in sandboxed environments with Unix socket restrictions
- Automatically configured on first run of
Python Libraries
- openpyxl: For creating, reading, and editing Excel files with formulas and formatting
- pandas: For data analysis, bulk operations, and simple data export
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.
- 5d ago First seen · 413 lines · 51 tokens per session scan B c95e024d31c5
xlsx-specialist-skill is a skill published in the GitHub repository darellchua2/opencode-config-template (6 stars, last pushed 2d ago), licensed Apache-2.0. It adds 51 tokens to every session and 3,905 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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