Slides
fcakyon/claude-codex-settings
Create and edit presentation slide decks (.pptx) with PptxGenJS, bundled layout helpers, and render/validation utilities.
Validate PowerPoint files using python-pptx when readfile fails
Install PPTX Validation Fallback
$ npx skills add HKUDS/OpenSpace --skill pptx-validation-fallback -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install HKUDS/OpenSpace pptx-validation-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/pptx-validation-fallback .claude/skills/pptx-validation-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 "pptx-validation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/pptx-validation-fallback into .claude/skills/pptx-validation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pptx-validation-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/pptx-validation-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 pptx-validation-fallback -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install HKUDS/OpenSpace pptx-validation-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/pptx-validation-fallback .agents/skills/pptx-validation-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 "pptx-validation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/pptx-validation-fallback into .agents/skills/pptx-validation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pptx-validation-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 pptx-validation-fallback -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install HKUDS/OpenSpace pptx-validation-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/pptx-validation-fallback .cursor/skills/pptx-validation-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 "pptx-validation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/pptx-validation-fallback into .cursor/skills/pptx-validation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pptx-validation-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/pptx-validation-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 pptx-validation-fallback -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install HKUDS/OpenSpace pptx-validation-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/pptx-validation-fallback .gemini/skills/pptx-validation-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 "pptx-validation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/pptx-validation-fallback into .gemini/skills/pptx-validation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pptx-validation-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 pptx-validation-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 pptx-validation-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/pptx-validation-fallback .github/skills/pptx-validation-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 "pptx-validation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/pptx-validation-fallback into .github/skills/pptx-validation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pptx-validation-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 pptx-validation-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 pptx-validation-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/pptx-validation-fallback .opencode/skills/pptx-validation-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 "pptx-validation-fallback" agent skill from https://github.com/HKUDS/OpenSpace/tree/main/benchmarks/gdpval/skills/pptx-validation-fallback into .opencode/skills/pptx-validation-fallback/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pptx-validation-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
pptx-validation-fallback- GitHub stars
- 7.7k
- Token cost
- ~697 tokens
- SKILL.md length
- 175 words
- Files
- 2
- Skills in repo
- 199
- Repo updated
- First seen
- Licence
- MIT
At a glance
Validate PowerPoint files using python-pptx when readfile fails
- Works in 4 steps: Check if read_file Failed → Use run_shell with python-pptx → Validate Structure → …
- Tasks that involve PowerPoint presentations
- SKILL.md covers When to Use, Procedure, Expected Output and Common Use Cases, plus 1 more section
- Calls pip
What it does
PPTX Validation Fallback is an agent skill from HKUDS/OpenSpace. Validate PowerPoint files using python-pptx when readfile fails
Its SKILL.md is about 700 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file.
It sits in Documents & Office, covering PowerPoint presentations. It works with Microsoft PowerPoint and python-pptx. 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 PowerPoint presentations
Example prompts
- “/pptx-validation-fallback”
Requirements
- Python 3
Workflow steps
4 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
PPTX Validation Fallback loads about 697 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 175 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). 175 words, ~697 tokens.
Download SKILL.mdSave it as
.claude/skills/pptx-validation-fallback/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- pptx-validation-fallback
- description
- Validate PowerPoint files using python-pptx when read_file fails
PowerPoint Validation Fallback
When to Use
Use this skill when read_file fails to properly read or validate PowerPoint (.pptx) files. This provides a reliable alternative for verifying presentation contents including slide count, titles, and structure.
Procedure
Step 1: Check if read_file Failed
If read_file with filetype pptx returns errors, incomplete content, or cannot extract slide information, proceed to the fallback method.
Step 2: Use run_shell with python-pptx
Execute Python code via run_shell using the python-pptx library to inspect the presentation:
from pptx import Presentation
# Load the presentation
prs = Presentation('path/to/file.pptx')
# Get basic info
slide_count = len(prs.slides)
print(f"Total slides: {slide_count}")
# Extract slide titles
for i, slide in enumerate(prs.slides):
if slide.shapes.title:
title = slide.shapes.title.text
print(f"Slide {i+1}: {title}")
else:
print(f"Slide {i+1}: [No title]")Step 3: Validate Structure
Check that the presentation meets expected requirements:
from pptx import Presentation
prs = Presentation('path/to/file.pptx')
# Validation checks
expected_slides = 10 # Adjust based on requirements
actual_slides = len(prs.slides)
if actual_slides >= expected_slides:
print(f"✓ Slide count OK: {actual_slides} slides")
else:
print(f"✗ Insufficient slides: {actual_slides}/{expected_slides}")
# Check for content on each slide
for i, slide in enumerate(prs.slides):
has_title = slide.shapes.title is not None
has_content = len(slide.shapes) > 1
print(f"Slide {i+1}: title={has_title}, content={has_content}")Step 4: Extract Detailed Content (Optional)
For deeper validation, extract text content from all shapes:
from pptx import Presentation
prs = Presentation('path/to/file.pptx')
for i, slide in enumerate(prs.slides):
print(f"\n=== Slide {i+1} ===")
for shape in slide.shapes:
if hasattr(shape, "text") and shape.text.strip():
print(shape.text)Expected Output
Successful validation should provide:
- Confirmed slide count
- List of slide titles
- Verification that each slide has expected content structure
Common Use Cases
- Verifying generated presentations have correct number of slides
- Confirming slide titles match required topics
- Validating presentation structure before delivery
- Debugging why read_file cannot parse a .pptx file
Dependencies
The python-pptx library must be available in the execution environment. Most Python environments support it via pip:
pip install python-pptx© 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/pptx-validation-fallback of HKUDS/OpenSpace.
- SKILL.md
- .skill_id
Open the folder on GitHubat commit 3827781
Compare with similar skills
PPTX Validation 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 |
|---|---|---|---|---|---|---|
| PPTX Validation Fallback this skillHKUDS/OpenSpace | 7.7k | — | ~697 | Automated safety check: Pass | MIT | |
| Slidesfcakyon/claude-codex-settings | 1.2k | 1 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Thesis Defense PPTX Builderzouchenzhen/thesis-defense-pptx-skill | 266 | — | ~2.4k | Automated safety check: Pass | Apache-2.0 | |
| Powerpoint SlidesNoi1r/powerpoint-skill | 123 | — | ~12k | Automated safety check: Notes | MIT | |
| PPTX HTML Fidelity Auditsanqiufong/slides-from-anything | 132 | 1 repos | ~3.5k | Automated safety check: Pass | Apache-2.0 | |
| PPTX Chart Forensicsaiden0z/pptx-renderer | 126 | — | ~970 | Automated safety check: Pass | Apache-2.0 |
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Related
Works with
Categories
Questions about PPTX Validation Fallback
What does PPTX Validation Fallback do?
Validate PowerPoint files using python-pptx when readfile fails. PPTX Validation Fallback is an agent skill from HKUDS/OpenSpace.
When should I use PPTX Validation Fallback?
PPTX Validation Fallback fits situations like: tasks that involve PowerPoint presentations.
How do I install PPTX Validation Fallback in Claude Code?
Run `npx skills add HKUDS/OpenSpace --skill pptx-validation-fallback -a claude-code`. Or copy the skill folder (benchmarks/gdpval/skills/pptx-validation-fallback in HKUDS/OpenSpace) into .claude/skills/pptx-validation-fallback in your project. Claude Code loads it when a task matches its description.
How do I install PPTX Validation Fallback in Codex?
Run `npx skills add HKUDS/OpenSpace --skill pptx-validation-fallback -a codex`. Or copy the skill folder (benchmarks/gdpval/skills/pptx-validation-fallback in HKUDS/OpenSpace) into .agents/skills/pptx-validation-fallback in your project. Codex loads it when a task matches its description.
Can I use PPTX Validation 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 pptx-validation-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/pptx-validation-fallback, .gemini/skills/pptx-validation-fallback, .github/skills/pptx-validation-fallback and .opencode/skills/pptx-validation-fallback in your project.
What does PPTX Validation Fallback need to run?
Going by SKILL.md and its folder, PPTX Validation Fallback needs the command-line tools its instructions call (pip). Our summary lists: Python 3.
Does PPTX Validation 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 PPTX Validation 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 PPTX Validation Fallback use?
PPTX Validation 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 PPTX Validation Fallback use?
About 697 tokens (SKILL.md is roughly 2.8k 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 PPTX Validation Fallback?
Skills that share tags, products or a category with PPTX Validation Fallback: Slides (fcakyon/claude-codex-settings, 1.2k stars), Thesis Defense PPTX Builder (zouchenzhen/thesis-defense-pptx-skill, 266 stars), Powerpoint Slides (Noi1r/powerpoint-skill, 123 stars) and PPTX HTML Fidelity Audit (sanqiufong/slides-from-anything, 132 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains PPTX Validation 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.