A tool for creating, editing, and examining PowerPoint presentation files (.pptx). It can work with slide content, layouts, comments, and speaker notes.

Use it to make presentations, update existing slides, adjust layouts, add notes or comments, and inspect slide content.

It helps an agent handle presentation work without treating slides as ordinary text documents. It also supports reading presentation content for analysis.

How OpenCoworkAI/open-cowork configures Claude Code

About the project

Open Cowork is an open-source desktop application for Windows and macOS that helps users install and use Claude Code, MCP tools, and Skills. It is intended for people who want a graphical way to work with coding agents, multiple models, sandboxed environments, and Feishu or Slack integrations. The catalogue skills extend its agent-oriented workflow.

OpenCoworkAI/open-cowork · 2,232 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to OpenCoworkAI/open-cowork. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/OpenCoworkAI/open-cowork/main/.claude/skills/pptx/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/OpenCoworkAI/open-cowork

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/opencoworkai/open-cowork/pptx/github.svg)](https://agentmods.dev/skills/opencoworkai/open-cowork/pptx)

Your own site

<a href="https://agentmods.dev/skills/opencoworkai/open-cowork/pptx"><img src="https://agentmods.dev/badge/skills/opencoworkai/open-cowork/pptx/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/opencoworkai/open-cowork/pptx"><img src="https://agentmods.dev/badge/skills/opencoworkai/open-cowork/pptx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 5,185 The whole file, excluding the scripts and references it only reads on demand.

Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Privilege Escalation · line 472
Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.

Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
medium Privilege Escalation · line 473
Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.

Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

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	$0.00062	$0.05185
Opus 5.5	$0.00025	$0.02074
Sonnet 5.5	$0.00012	$0.01037
Haiku 4.5	$0.00006	$0.00519

Measured 1mo ago against content hash 62e438aa8f5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

pptx 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 1mo ago.

The scan reads SKILL.md. This mod also ships 12 executable files (ooxml/scripts/pack.py, ooxml/scripts/unpack.py, ooxml/scripts/validate.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

- Linux: `sudo apt-get install libreoffice`

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

pptx — 94% identical, 75 lines differ
pptx — 92% identical, 36 lines differ

.claude/skills/pptx/SKILL.md · 475 lines

How it starts

The opening of the file, as written. The whole thing — 475 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PPTX creation, editing, and analysis

Overview

Create, edit, or analyze the contents of .pptx files when requested. A .pptx file is essentially a ZIP archive containing XML files and other resources. Different tools and workflows are available for different tasks.

CRITICAL: Read All Documentation First

Before starting any presentation task, read ALL relevant documentation files completely to understand the full workflow:

For creating new presentations: Read html2pptx.md and css.md in their entirety
For editing existing presentations: Read ooxml.md in its entirety
For template-based creation: Read the relevant sections of this file plus css.md

NEVER set any range limits when reading these files. Understanding the complete workflow, constraints, and best practices before starting is essential for producing high-quality presentations. Partial knowledge leads to errors, inconsistent styling, and visual defects that require rework.

Reading and analyzing content

Text extraction

To read just the text content of a presentation, convert the document to markdown:

# Convert document to markdown
python3 -m markitdown path-to-file.pptx

Raw XML access

Use raw XML access for: comments, speaker notes, slide layouts, animations, design elements, and complex formatting. To access these features, unpack a presentation and read its raw XML contents.

Unpacking a file

python3 ooxml/scripts/unpack.py <office_file> <output_dir>

Key file structures

ppt/presentation.xml - Main presentation metadata and slide references
ppt/slides/slide{N}.xml - Individual slide contents (slide1.xml, slide2.xml, etc.)
ppt/notesSlides/notesSlide{N}.xml - Speaker notes for each slide
ppt/comments/modernComment_*.xml - Comments for specific slides
ppt/slideLayouts/ - Layout templates for slides
ppt/slideMasters/ - Master slide templates
ppt/theme/ - Theme and styling information
ppt/media/ - Images and other media files

Read the full file on GitHub · 475 lines

Files

What ships with it

56 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.

Changes

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.

1mo ago First seen · 475 lines · 62 tokens per session scan B 62e438aa8f5f

Subscribe to this mod's changes

pptx is a skill published in the GitHub repository OpenCoworkAI/open-cowork (2,232 stars, last pushed 7d ago), licensed MIT. It adds 62 tokens to every session and 5,185 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.

Claude Code Creative and media Documents ai-agent ai-coding anthropic desktop-app open-cowork

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