generating-pptx

A tool for creating editable PowerPoint presentation files. It builds real text, shapes, charts, and tables that can still be changed in PowerPoint.

In plain words
What is it for?
Use it to generate sales decks, branded presentations, charts, tables, agendas, metric slides, and closing slides as .pptx files.
Why use it?
It avoids presentations made from flat images, where text and charts cannot be edited. It also keeps chart data embedded so the charts remain adjustable.

Skill for Claude CodeCodex

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/luccapinto/agentic-data-kit/generating-pptx
Any agent
npx skills add luccapinto/agentic-data-kit --skill generating-pptx
Clone the repo
git clone --depth 1 https://github.com/luccapinto/agentic-data-kit

Made for: Claude Code, Codex.

Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 694 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 $0.00098 $0.00694
Opus 5 $0.00049 $0.00347
Sonnet 5 $0.00020 $0.00139
Haiku 4.5 $0.00010 $0.00069

Measured 2d ago against content hash 9b9f6be1ddd8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

generating-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 1 executable file (scripts/build_pptx.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.

.agent/skills/generating-pptx/SKILL.md · 46 lines

How it starts

The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: generating-pptx

Produce a native, editable PowerPoint with python-pptx. Every element is a real PowerPoint object — editable text, shapes, native charts (backed by embedded data you can edit in PowerPoint), and tables. This is the right path when the deliverable must be .pptx and editable; for HTML decks, interactive sites, or designed PDFs use building-html-presentations.

Why not HTML→PPTX? Exporting an HTML deck to PPTX (e.g. Marp --pptx) embeds each slide as a flat image — not editable. python-pptx builds the real OOXML, so charts and text stay live.

Setup

pip install python-pptx

Build it

scripts/build_pptx.py is a working generator — a brand-themed sales deck with a title slide, agenda, KPI slide, native charts (clustered column, line, pie), a table slide, and a closing. Run it, then adapt:

python .claude/skills/generating-pptx/scripts/build_pptx.py --out deck.pptx

Adapt by editing the DATA, BRAND, and the build() slide calls — not the helpers.

What python-pptx gives you (the palette)

  • Native charts (editable, with embedded Excel data): COLUMN_CLUSTERED, COLUMN_STACKED, BAR_CLUSTERED, LINE, LINE_MARKERS, PIE, DOUGHNUT, XY_SCATTER, AREA, RADAR. Use CategoryChartData for category charts and XyChartData for scatter.
  • Tables via slide.shapes.add_table(rows, cols, ...) — style cells, headers, number formats.
  • Text via placeholders or add_textboxtext_frame → paragraphs/runs (font, size, color, bold).
  • Shapes / KPI cards via add_shape(MSO_SHAPE.ROUNDED_RECTANGLE, ...) with fill + text.
  • Brand: set RGBColor from your DESIGN.md tokens; reuse one accent + semantic colors.

Rules

  • Map brand from DESIGN.md — colors, and font name if defined. Keep one accent.
  • Native charts over images — let the user edit data in PowerPoint.
  • Never invent data — use provided numbers; mark placeholders. Add a source line per data slide.
  • 16:9 by default (Inches(13.333) × Inches(7.5)).
  • Action-title style: the slide title states the insight, not just the topic.

Read the full file on GitHub · 46 lines

Files

What ships with it

1 file 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 · 46 lines · 98 tokens per session scan A 9b9f6be1ddd8

Subscribe to this mod's changes

generating-pptx is a skill published in the GitHub repository luccapinto/agentic-data-kit (7 stars, last pushed 1mo ago), licensed MIT. It adds 98 tokens to every session and 694 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 2026-08-31.