Markitdown
ImCa0/just-laws
Convert files and office documents to Markdown. An agent skill from ImCa0/just-laws.
리액티브 스프레드시트 엔진 설계 가이드. An agent skill from revfactory/claude-code-harness.
Install Reactive Spreadsheet Design
$ npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install revfactory/claude-code-harness reactive-spreadsheet-design --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/revfactory/claude-code-harness.git skills-src && mkdir -p .claude/skills && cp -r skills-src/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design .claude/skills/reactive-spreadsheet-design && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "reactive-spreadsheet-design" agent skill from https://github.com/revfactory/claude-code-harness/tree/main/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design into .claude/skills/reactive-spreadsheet-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reactive-spreadsheet-design", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/revfactory/claude-code-harness/tree/main/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-designType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install revfactory/claude-code-harness reactive-spreadsheet-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/claude-code-harness.git skills-src && mkdir -p .agents/skills && cp -r skills-src/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design .agents/skills/reactive-spreadsheet-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "reactive-spreadsheet-design" agent skill from https://github.com/revfactory/claude-code-harness/tree/main/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design into .agents/skills/reactive-spreadsheet-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reactive-spreadsheet-design", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install revfactory/claude-code-harness reactive-spreadsheet-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/claude-code-harness.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design .cursor/skills/reactive-spreadsheet-design && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "reactive-spreadsheet-design" agent skill from https://github.com/revfactory/claude-code-harness/tree/main/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design into .cursor/skills/reactive-spreadsheet-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reactive-spreadsheet-design", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/revfactory/claude-code-harness.git --path experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install revfactory/claude-code-harness reactive-spreadsheet-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/claude-code-harness.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design .gemini/skills/reactive-spreadsheet-design && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "reactive-spreadsheet-design" agent skill from https://github.com/revfactory/claude-code-harness/tree/main/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design into .gemini/skills/reactive-spreadsheet-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reactive-spreadsheet-design", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install revfactory/claude-code-harness reactive-spreadsheet-designInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/revfactory/claude-code-harness.git skills-src && mkdir -p .github/skills && cp -r skills-src/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design .github/skills/reactive-spreadsheet-design && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "reactive-spreadsheet-design" agent skill from https://github.com/revfactory/claude-code-harness/tree/main/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design into .github/skills/reactive-spreadsheet-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reactive-spreadsheet-design", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install revfactory/claude-code-harness reactive-spreadsheet-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/claude-code-harness.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design .opencode/skills/reactive-spreadsheet-design && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "reactive-spreadsheet-design" agent skill from https://github.com/revfactory/claude-code-harness/tree/main/experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design into .opencode/skills/reactive-spreadsheet-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "reactive-spreadsheet-design", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
reactive-spreadsheet-design- GitHub stars
- 120
- Token cost
- ~284 tokens
- SKILL.md length
- 84 words
- Files
- 3 (incl. references)
- Skills in repo
- 15
- Repo updated
- First seen
- Licence
- None found
At a glance
리액티브 스프레드시트 엔진 설계 가이드. An agent skill from revfactory/claude-code-harness.
- Tasks that involve Excel spreadsheets
- SKILL.md covers 3단계 파이프라인, 의존성 그래프 (DAG), 증분 재계산 알고리즘 and Pratt Parser 기반 수식 파싱, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Reactive Spreadsheet Design is an agent skill from revfactory/claude-code-harness. 리액티브 스프레드시트 엔진 설계 가이드. 셀 수식 파싱, 의존성 그래프(DAG), 증분 재계산, 내장 함수 구현 시 사용한다.
Its SKILL.md is about 280 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/dependency-graph.md` and `references/formula-functions.md`).
It sits in Documents & Office, covering Excel spreadsheets.
When your agent uses it
- Tasks that involve Excel spreadsheets
Example prompts
- “/reactive-spreadsheet-design”
What it can do on your machine
Read from SKILL.md and the folder at commit 267005c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Reactive Spreadsheet Design loads about 284 tokens when it runs, and up to ~1k if it reads all its reference files. Until then it costs about 25 tokens; SKILL.md has 84 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 84 words (~284 tokens).
- name
- reactive-spreadsheet-design
Files
SKILL.md and 2 other files (references) in experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design of revfactory/claude-code-harness.
- SKILL.md
- references/dependency-graph.md
- references/formula-functions.md
Open the folder on GitHubat commit 267005c
Compare with similar skills
Reactive Spreadsheet Design next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Reactive Spreadsheet Design this skillrevfactory/claude-code-harness | 120 | — | ~284 | Automated safety check: Pass | None | |
| MarkitdownImCa0/just-laws | 781 | 14 repos | ~3.2k | Automated safety check: Notes | MIT | |
| Managing Google Workspacetaylorwilsdon/google_workspace_mcp | 3.3k | — | ~2.9k | Automated safety check: Pass | MIT | |
| Data Table Managern8n-io/n8n | 207k | — | ~2.3k | Automated safety check: Pass | Custom licence | |
| Docx4jplutext/docx4j | 2.4k | — | ~2.5k | Automated safety check: Pass | None | |
| Instrument Data To Allotropeaws-samples/amazon-bedrock-agents-healthcare-lifesciences | 274 | 2 repos | ~2.7k | Automated safety check: Pass | Apache-2.0 |
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Categories
Questions about Reactive Spreadsheet Design
What does Reactive Spreadsheet Design do?
리액티브 스프레드시트 엔진 설계 가이드. An agent skill from revfactory/claude-code-harness. Reactive Spreadsheet Design is an agent skill from revfactory/claude-code-harness. 리액티브 스프레드시트 엔진 설계 가이드.
When should I use Reactive Spreadsheet Design?
Reactive Spreadsheet Design fits situations like: tasks that involve Excel spreadsheets.
How do I install Reactive Spreadsheet Design in Claude Code?
Run `npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a claude-code`. Or copy the skill folder (experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design in revfactory/claude-code-harness) into .claude/skills/reactive-spreadsheet-design in your project. Claude Code loads it when a task matches its description.
How do I install Reactive Spreadsheet Design in Codex?
Run `npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a codex`. Or copy the skill folder (experiments/results/case-012/harness/.claude/skills/reactive-spreadsheet-design in revfactory/claude-code-harness) into .agents/skills/reactive-spreadsheet-design in your project. Codex loads it when a task matches its description.
Can I use Reactive Spreadsheet Design in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add revfactory/claude-code-harness --skill reactive-spreadsheet-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/reactive-spreadsheet-design, .gemini/skills/reactive-spreadsheet-design, .github/skills/reactive-spreadsheet-design and .opencode/skills/reactive-spreadsheet-design in your project.
What does Reactive Spreadsheet Design need to run?
SKILL.md names no scripts, command-line tools or credentials: Reactive Spreadsheet Design is instructions for the agent only.
Does Reactive Spreadsheet Design access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Reactive Spreadsheet Design safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Reactive Spreadsheet Design use?
No licence was found for Reactive Spreadsheet Design or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Reactive Spreadsheet Design use?
About 284 tokens (SKILL.md is roughly 1.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 764 tokens, read only when the agent opens those files.
What are the alternatives to Reactive Spreadsheet Design?
Skills that share tags, products or a category with Reactive Spreadsheet Design: Markitdown (ImCa0/just-laws, 781 stars), Managing Google Workspace (taylorwilsdon/google_workspace_mcp, 3.3k stars), Data Table Manager (n8n-io/n8n, 207k stars) and Docx4j (plutext/docx4j, 2.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Reactive Spreadsheet Design?
revfactory (a GitHub user) maintains it in revfactory/claude-code-harness, which has 120 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on March 6, 2026.
Source: revfactory/claude-code-harness on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.