agentmods.dev

pptx

A toolkit for creating, reading, inspecting, and editing PowerPoint presentation files in .pptx format.

In plain words
What is it for?
Creating presentations, pitch decks, and slides; reading or extracting presentation content; editing, combining, or splitting .pptx files; and converting presentations to PDF or image previews.
Why use it?
It gives a coding agent a defined workflow for handling slide files, including extracting their text and checking their visual layout.

Skill for Claude CodeCodex

1.1k +2 2d ago A scan 103 tokens original Apache-2.0
View the source file mateaix/mateclaw
Install

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.

agentmods
npx agentmods add skills/mateaix/mateclaw/pptx
Any agent
npx skills add mateaix/mateclaw --skill pptx
Clone the repo
git clone --depth 1 https://github.com/mateaix/mateclaw

Made for: Claude Code, Codex.

Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,098 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00103 $0.02098
Opus 5 $0.00051 $0.01049
Sonnet 5 $0.00021 $0.00420
Haiku 4.5 $0.00010 $0.00210

Measured 2d ago against content hash 40cfc3c2211b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pptx 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 2d ago.

The scan reads SKILL.md. This mod also ships 16 executable files (scripts/__init__.py, scripts/add_slide.py, scripts/clean.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.

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.

mateclaw-server/src/main/resources/skills/pptx/SKILL.md · 250 lines

How it starts

The opening of the file, as written. The whole thing — 250 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Important: All scripts/ paths are relative to this skill directory. Use run_skill_script tool to execute scripts, or run with: cd {this_skill_dir} && python scripts/...

PPTX Skill

Prerequisites

  • markitdown[pptx]: text extraction from presentations
  • Pillow: thumbnail grid generation
  • pptxgenjs (npm install -g pptxgenjs): creating presentations from scratch
  • LibreOffice (soffice): presentation-to-PDF conversion
  • pdftoppm (poppler-utils): PDF-to-image conversion for thumbnail/visual workflows
  • If pdftoppm is unavailable, a Python fallback path may use pdf2image.

Quick Reference

Task Guide
Read/analyze content python -m markitdown presentation.pptx
Edit or create from template Unpack → manipulate → pack workflow
Create from scratch Use pptxgenjs (npm)

Reading Content

# Text extraction
python -m markitdown presentation.pptx

# Visual overview (thumbnail grid)
python scripts/thumbnail.py presentation.pptx

# Raw XML access
python scripts/office/unpack.py presentation.pptx unpacked/

Editing Workflow

  1. Analyze template with thumbnail.py
  2. Unpack: python scripts/office/unpack.py presentation.pptx unpacked/
  3. Add/remove slides: python scripts/add_slide.py unpacked/ --source <slide_num>
  4. Edit XML content in unpacked/ppt/slides/
  5. Clean orphans: python scripts/clean.py unpacked/
  6. Pack: python scripts/office/pack.py unpacked/ output.pptx --original presentation.pptx

Adding Slides

# Duplicate an existing slide
python scripts/add_slide.py unpacked/ --source 2

# Add from layout template
python scripts/add_slide.py unpacked/ --layout 1

Cleaning Up

# Remove orphaned slides, unreferenced media, update content types
python scripts/clean.py unpacked/

Creating Thumbnails

# Create thumbnail grid of all slides
python scripts/thumbnail.py presentation.pptx

# Customize output
python scripts/thumbnail.py presentation.pptx --output thumbs.png --cols 4

Read the full file on GitHub · 250 lines

Files

What ships with it

58 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.

  1. 2d ago First seen · 250 lines · 103 tokens per session scan A 40cfc3c2211b

Subscribe to this mod's changes

pptx is a skill published in the GitHub repository mateaix/mateclaw (1,061 stars, last pushed 2d ago), licensed Apache-2.0. It adds 103 tokens to every session and 2,098 once invoked, about $0.0005 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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