Excel Workbook Editor
TokenRhythm/opensquilla
Inspects, edits in place or creates Microsoft Excel .xlsx workbooks with openpyxl, treating each cell as a typed number, string, datetime or formula value.
Use shellagent as fallback when executecodesandbox fails for Excel file operations
Install Excel Creation Fallback
$ npx skills add HKUDS/OpenSpace --skill excel-creation-fallback -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install HKUDS/OpenSpace excel-creation-fallback --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/HKUDS/OpenSpace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/benchmarks/gdpval/skills/excel-creation-fallback .claude/skills/excel-creation-fallback && 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 "excel-creation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/excel-creation-fallback into .claude/skills/excel-creation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "excel-creation-fallback", 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/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/excel-creation-fallbackType 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 HKUDS/OpenSpace --skill excel-creation-fallback -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install HKUDS/OpenSpace excel-creation-fallback --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HKUDS/OpenSpace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/benchmarks/gdpval/skills/excel-creation-fallback .agents/skills/excel-creation-fallback && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "excel-creation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/excel-creation-fallback into .agents/skills/excel-creation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "excel-creation-fallback", 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 HKUDS/OpenSpace --skill excel-creation-fallback -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install HKUDS/OpenSpace excel-creation-fallback --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HKUDS/OpenSpace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/benchmarks/gdpval/skills/excel-creation-fallback .cursor/skills/excel-creation-fallback && 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 "excel-creation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/excel-creation-fallback into .cursor/skills/excel-creation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "excel-creation-fallback", 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/HKUDS/OpenSpace.git --path benchmarks/gdpval/skills/excel-creation-fallback--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 HKUDS/OpenSpace --skill excel-creation-fallback -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install HKUDS/OpenSpace excel-creation-fallback --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HKUDS/OpenSpace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/benchmarks/gdpval/skills/excel-creation-fallback .gemini/skills/excel-creation-fallback && 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 "excel-creation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/excel-creation-fallback into .gemini/skills/excel-creation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "excel-creation-fallback", 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 HKUDS/OpenSpace excel-creation-fallbackInstalls 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 HKUDS/OpenSpace --skill excel-creation-fallback -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/HKUDS/OpenSpace.git skills-src && mkdir -p .github/skills && cp -r skills-src/benchmarks/gdpval/skills/excel-creation-fallback .github/skills/excel-creation-fallback && 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 "excel-creation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/excel-creation-fallback into .github/skills/excel-creation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "excel-creation-fallback", 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 HKUDS/OpenSpace --skill excel-creation-fallback -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install HKUDS/OpenSpace excel-creation-fallback --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HKUDS/OpenSpace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/benchmarks/gdpval/skills/excel-creation-fallback .opencode/skills/excel-creation-fallback && 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 "excel-creation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/excel-creation-fallback into .opencode/skills/excel-creation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "excel-creation-fallback", 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
excel-creation-fallback- GitHub stars
- 7.7k
- Token cost
- ~921 tokens
- SKILL.md length
- 293 words
- Files
- 2
- Skills in repo
- 199
- Repo updated
- First seen
- Licence
- MIT
At a glance
Use shellagent as fallback when executecodesandbox fails for Excel file operations
- Works in 3 steps: Attempt with execute_code_sandbox first → If it fails, switch to shell_agent → Let shell_agent handle the environment
- Tasks that involve Excel spreadsheets
- SKILL.md covers When to Use, Steps, Example Task Descriptions and Why This Pattern Works, plus 2 more sections
- Calls pip
What it does
Excel Creation Fallback is an agent skill from HKUDS/OpenSpace. Use shellagent as fallback when executecodesandbox fails for Excel file operations
Its SKILL.md is about 920 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file.
It sits in Documents & Office, covering Excel spreadsheets. It works with Microsoft Excel, openpyxl and Python. The repository describes itself as: "OpenSpace: The Skill Management Layer for AI Agents" -- https://open-space.cloud/. The licence is MIT.
When your agent uses it
- Tasks that involve Excel spreadsheets
Example prompts
- “/excel-creation-fallback”
Requirements
- Python 3
Workflow steps
3 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 3827781. 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
Shell commands in SKILL.md call:
pip
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use pip, which can reach the network depending on how they are called.
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
Excel Creation Fallback loads about 921 tokens when it runs. Until then it costs about 27 tokens; SKILL.md has 293 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
The full file from HKUDS/OpenSpace at commit 3827781, republished under its MIT licence (© HKUDS). 293 words, ~921 tokens.
Download SKILL.mdSave it as
.claude/skills/excel-creation-fallback/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- excel-creation-fallback
- description
- Use shell_agent as fallback when execute_code_sandbox fails for Excel file operations
Excel File Creation Fallback
When execute_code_sandbox fails for openpyxl or Excel operations, delegate to shell_agent which can autonomously handle dependency and environment issues.
When to Use
execute_code_sandboxfails with import errors for openpyxl or related libraries- The sandbox environment lacks required dependencies
- You need to create or modify Excel files with complex requirements
- Repeated sandbox execution failures for file I/O operations
Steps
Step 1: Attempt with execute_code_sandbox first
Try creating the Excel file using Python's openpyxl library in the code sandbox:
from openpyxl import Workbook
wb = Workbook()
ws = wb.active
ws.append(['Column1', 'Column2', 'Column3'])
wb.save('output.xlsx')Step 2: If it fails, switch to shell_agent
Delegate the task to shell_agent with a clear, comprehensive task description:
Create an Excel file named 'output.xlsx' with the following structure:
- Sheet 1: Data with columns [Date, Metric, Value]
- Include sample data rows with realistic values
- Apply basic formatting (bold headers, cell borders)
- Add a summary section with totals or averages
- Save the file in the current directoryStep 3: Let shell_agent handle the environment
The shell_agent will:
- Decide whether to use Python or Bash
- Install dependencies if needed (e.g.,
pip install openpyxl) - Write and execute the code
- Automatically retry and fix errors (up to several rounds)
- Confirm the file was created successfully
Example Task Descriptions
Basic Excel file:
Create an Excel file named 'sales_report.xlsx' with headers: Date, Product, Quantity, Price, Total. Add 10 sample rows of data and a formula column for Total (Quantity * Price).Complex Excel with formatting:
Create an Excel file with multiple sheets:
- Sheet 'Summary': Key metrics and totals
- Sheet 'Details': Full transaction data with columns [ID, Date, Customer, Amount, Status]
- Apply conditional formatting to highlight amounts over 1000
- Add borders to all cells and bold headersTiered pricing structure:
Create an Excel file with a tiered pricing table:
- Column A: Quantity thresholds (0, 100, 500, 1000)
- Column B: Unit price at each tier
- Column C: Discount percentage (e.g., 15% discount over 1000 units)
- Include a financial summary section with projectionsWhy This Pattern Works
shell_agent has several advantages over execute_code_sandbox for file creation tasks:
| Feature | execute_code_sandbox | shell_agent |
|---|---|---|
| Dependency installation | Manual/preset only | Autonomous |
| Error recovery | Returns error | Auto-retries and fixes |
| Tool selection | Python only | Python, Bash, or other |
| Filesystem access | Sandbox-limited | Full workspace access |
| Verification | None | Can verify file creation |
Troubleshooting
If shell_agent also struggles:
- Be more specific - Include exact column names, data types, and formatting requirements
- Provide sample data - Include example rows to clarify expected output
- Break it down - For complex files, request creation in stages
- Check permissions - Ensure the target directory is writable
Alternative Approaches
If shell_agent is unavailable or unsuitable:
- Use
run_shellwith explicit commands (if you know the exact syntax) - Check for alternative libraries (xlsxwriter, pandas with openpyxl engine)
- Use CSV as intermediate format, then convert to Excel
© HKUDS, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in benchmarks/gdpval/skills/excel-creation-fallback of HKUDS/OpenSpace.
- SKILL.md
- .skill_id
Open the folder on GitHubat commit 3827781
Compare with similar skills
Excel Creation Fallback 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 |
|---|---|---|---|---|---|---|
| Excel Creation Fallback this skillHKUDS/OpenSpace | 7.7k | — | ~921 | Automated safety check: Pass | MIT | |
| Excel Workbook EditorTokenRhythm/opensquilla | 7.1k | — | ~1.6k | Automated safety check: Pass | Apache-2.0 | |
| Kimi XLSXthvroyal/kimi-skills | 238 | — | ~9.5k | Automated safety check: Pass | None | |
| Office XLSXopen-octo/octo-agent | 125 | — | ~1.8k | Automated safety check: Notes | MIT | |
| Cc Streaming Export Safetydoccker/cc-use-exp | 1.1k | — | ~2.2k | Automated safety check: Pass | Custom licence | |
| XLSXnexus-research-lab/nexus | 150 | — | ~501 | Automated safety check: Pass | Apache-2.0 |
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Related
Works with
Categories
Questions about Excel Creation Fallback
What does Excel Creation Fallback do?
Use shellagent as fallback when executecodesandbox fails for Excel file operations. Excel Creation Fallback is an agent skill from HKUDS/OpenSpace.
When should I use Excel Creation Fallback?
Excel Creation Fallback fits situations like: tasks that involve Excel spreadsheets.
How do I install Excel Creation Fallback in Claude Code?
Run `npx skills add HKUDS/OpenSpace --skill excel-creation-fallback -a claude-code`. Or copy the skill folder (benchmarks/gdpval/skills/excel-creation-fallback in HKUDS/OpenSpace) into .claude/skills/excel-creation-fallback in your project. Claude Code loads it when a task matches its description.
How do I install Excel Creation Fallback in Codex?
Run `npx skills add HKUDS/OpenSpace --skill excel-creation-fallback -a codex`. Or copy the skill folder (benchmarks/gdpval/skills/excel-creation-fallback in HKUDS/OpenSpace) into .agents/skills/excel-creation-fallback in your project. Codex loads it when a task matches its description.
Can I use Excel Creation Fallback 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 HKUDS/OpenSpace --skill excel-creation-fallback -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/excel-creation-fallback, .gemini/skills/excel-creation-fallback, .github/skills/excel-creation-fallback and .opencode/skills/excel-creation-fallback in your project.
What does Excel Creation Fallback need to run?
Going by SKILL.md and its folder, Excel Creation Fallback needs the command-line tools its instructions call (pip). Our summary lists: Python 3.
Does Excel Creation Fallback access the network?
SKILL.md contains no URLs. Its commands use pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Excel Creation Fallback 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 Excel Creation Fallback use?
Excel Creation Fallback is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Excel Creation Fallback use?
About 921 tokens (SKILL.md is roughly 3.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Excel Creation Fallback?
Skills that share tags, products or a category with Excel Creation Fallback: Excel Workbook Editor (TokenRhythm/opensquilla, 7.1k stars), Kimi XLSX (thvroyal/kimi-skills, 238 stars), Office XLSX (open-octo/octo-agent, 125 stars) and Cc Streaming Export Safety (doccker/cc-use-exp, 1.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Excel Creation Fallback?
HKUDS (a GitHub organization) maintains it in HKUDS/OpenSpace, which has 7,743 GitHub stars. The repository holds 199 skills in this directory. The repository was last updated on August 12, 2026.
Source: HKUDS/OpenSpace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.