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 DevExpress/agent-skills --skill devexpress-office-file-api-spreadsheetgit clone --depth 1 https://github.com/DevExpress/agent-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/devexpress/agent-skills/devexpress-office-file-api-spreadsheet)<a href="https://agentmods.dev/skills/devexpress/agent-skills/devexpress-office-file-api-spreadsheet"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devexpress-office-file-api-spreadsheet/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/devexpress/agent-skills/devexpress-office-file-api-spreadsheet"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devexpress-office-file-api-spreadsheet.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 | $0.00152 | $0.05068 |
| Opus 5 | $0.00076 | $0.02534 |
| Sonnet 5 | $0.00030 | $0.01014 |
| Haiku 4.5 | $0.00015 | $0.00507 |
Grade A, and why
devexpress-office-file-api-spreadsheet 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 — 450 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DevExpress Spreadsheet Document API
The Spreadsheet Document API is a non-visual .NET library for creating, loading, editing, and exporting spreadsheet documents (Excel workbooks) programmatically — without requiring Microsoft Office. It supports .xlsx, .xls, .xlsm, .csv, .txt formats and can export to PDF, HTML, and images.
When to Use This Skill
Use this skill when you need to:
- Create Excel workbooks (.xlsx, .xls, .xlsm) programmatically without Microsoft Office
- Read, parse, or extract data from existing .xlsx/.xls/.csv files
- Modify existing spreadsheets (add data, change formatting, update formulas)
- Apply cell formatting (fonts, colors, borders, number formats, conditional formatting)
- Work with formulas and calculated values (SUM, VLOOKUP, IF, array formulas, UDFs)
- Create and configure charts within spreadsheets (column, line, pie, scatter, pivot, Excel 2016)
- Build pivot tables from worksheet data
- Import data from arrays, collections, DataTables, or databases
- Export spreadsheets to PDF, HTML, or images
- Print spreadsheets or configure page setup and print titles
- Protect workbooks or individual worksheets with passwords
- Work with named ranges, tables (ListObjects), data validation, sparklines
Prerequisites & Installation
NuGet Packages
| Package | Purpose |
|---|---|
DevExpress.Document.Processor |
Core spreadsheet processing (create, load, edit, save) |
.NET (8/9/10+)
dotnet add package DevExpress.Document.Processor
.NET Framework (4.6.2+)
Install-Package DevExpress.Document.Processor
See references/getting-started-dotnet-fw.md for the full framework-specific guide.
Important: All DevExpress packages in a project must share the same version number. A valid DevExpress license is required.
Package Versions
Unless the user explicitly requests a specific version, always target the latest DevExpress release (v26.1 at the time of writing). dotnet add package <PackageName> without --version installs the latest stable version — prefer this form. Never pin an older version in project files, Dockerfiles, or CI/CD pipelines unless the user asks for it. This is especially important in integration scenarios (Docker, cloud deployments). All DevExpress.* packages in a project must share the same version.
What ships with it
13 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.
- examples/quickstart.cs 8.2 KB
- references/advanced-features.md 14 KB
- references/cell-formatting.md 9.7 KB
- references/charts.md 7.8 KB
- references/data-import-export.md 8.7 KB
- references/export.md 7.8 KB
- references/formulas.md 11 KB
- references/getting-started-dotnet-fw.md 6.4 KB
- references/getting-started.md 10 KB
- references/pivot-tables.md 7.0 KB
- references/protection.md 7.5 KB
- references/safe-spreadsheet-processing.md 6.6 KB
- references/worksheet-operations.md 4.8 KB
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 · 450 lines · 152 tokens per session scan A 9904612a22fe
devexpress-office-file-api-spreadsheet is a skill published in the GitHub repository DevExpress/agent-skills (53 stars, last pushed 25d ago), licensed MIT. It adds 152 tokens to every session and 5,068 once invoked, about $0.0008 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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