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skill Claude Code CX Codex Cursor GitHub Copilot official · Anthropic

pptx-author — Claude Code skill: what it does, how to install

Builds PowerPoint decks on disk in headless agent runs without an open Office app. Useful when you need a raw .pptx artifact via python-pptx.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓ 
npx skills add anthropics/financial-services --skill pptx-author -a claude-code
Open on GitHub

What pptx-author does

This skill outputs .pptx presentations into ./out/ during managed-agent sessions where Microsoft PowerPoint is not running. Instead of interacting with an active Office window, the agent writes a Python script using python-pptx and executes it through Bash. Once saved, it returns the relative path so the orchestration layer can collect the deck.

Formatting follows strict rules: one idea per slide, with key takeaways stated in the title. Any figure drawn from ./out/model.xlsx requires a footnote citing the specific sheet and cell. If a corporate template exists inside ./templates/, the script loads it; otherwise it falls back to default slide layouts. When rendering fidelity matters, embedding a PNG exported from the data model is preferred over native PowerPoint charts.

Do not enable this skill if mcp__office__powerpoint_* tools are available in your environment. Live document tools provide review checkpoints, whereas this skill serves strictly as an offline fallback. It requires Python with python-pptx and never emails or uploads decks externally.

What it helps with

  • generate a standalone .pptx deck in headless agent mode
  • apply a firm slide template mounted at ./templates/
  • link financial figures to model sheets and cells via footnotes
  • embed rendered PNG charts into presentation slides

Example prompts for the agent

  • Build a pitch deck for the valuation summary and save it to ./out/pitch-target.pptx
  • Generate a presentation from ./templates/firm-template.pptx using data from ./out/model.xlsx
  • Create a three-slide deck summarizing our quarterly model into ./out/

How to install pptx-author

1Skills CLI (Vercel)

npx skills add anthropics/financial-services --skill pptx-author -a claude-code

2Manually: put the files in place

~/.claude/skills/pptx-author/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/pptx-author/

From the same set51

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Questions about pptx-author

How to install pptx-author in Claude Code?

Run npx skills add anthropics/financial-services --skill pptx-author -a claude-code in your terminal.

What does pptx-author do?

It creates PowerPoint .pptx files on disk inside ./out/ by generating and executing a python-pptx script during headless runs.

When should you avoid pptx-author?

Avoid it when mcp__office__powerpoint_* tools are available. Those tools work directly with live Office documents, while this skill is only a headless file-producing fallback.

Source text

SKILL.md · Apache-2.0 
---
name: pptx-author
description: Produce a .pptx file on disk (headless) instead of driving a live PowerPoint document — for managed-agent sessions with no open Office app.
---

# pptx-author

Use this skill when running **headless** (managed-agent / CMA mode) and you need to deliver a PowerPoint deck as a **file artifact** rather than editing a live document via `mcp__office__powerpoint_*`.

## Output contract

- Write to `./out/<name>.pptx`. Create `./out/` if it does not exist.
- Return the relative path in your final message so the orchestration layer can collect it.

## How to build the deck

Write a short Python script and run it with Bash. Use `python-pptx`:

```python
from pptx import Presentation
from pptx.util import Inches, Pt

prs = Presentation("./templates/firm-template.pptx")  # if a template is provided
# or: prs = Presentation()

slide = prs.slides.add_slide(prs.slide_layouts[5])    # title-only
slide.shapes.title.text = "Valuation Summary"
# ... add tables / charts / text boxes ...

prs.save("./out/pitch-<target>.pptx")
```

## Conventions (mirror the live-Office `pitch-deck` skill)

- **One idea per slide.** Title states the takeaway; body supports it.
- **Every number traces to the model.** If a figure comes from `./out/model.xlsx`, footnote the sheet and cell.
- **Use the firm template** when one is mounted at `./templates/`; otherwise default layouts.
- **Charts**: prefer embedding a PNG rendered from the model over native pptx charts when fidelity matters.
- **No external sends.** This skill writes a file; it never emails or uploads.

## When NOT to use

If `mcp__office__powerpoint_*` tools are available (Cowork plugin mode), use those instead — they drive the user's live document with review checkpoints. This skill is the file-producing fallback for headless runs.

© anthropics · Apache-2.0 · anthropics/financial-services

See also

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