Is the Claude PowerPoint skill official?

Yes. Anthropic ships it in the anthropics/skills repository at skills/pptx, and it is the same skill that powers Claude's built-in file creation. It is source-available under a proprietary license, not open source.

Can it edit my existing corporate template?

Yes. It unpacks .pptx and .potx files, edits the slide XML directly, and ships scripts to duplicate slides with correct package bookkeeping and render a thumbnail grid of every layout. A validator can baseline checks against the original template so its quirks don't read as your errors.

Do I need to install it on claude.ai?

No. Paid Claude.ai plans already include the document skills. Installation only matters in Claude Code, via /plugin marketplace add anthropics/skills then /plugin install document-skills@anthropic-agent-skills, or on the API via the Skills API.

What about Word and Excel files?

The docx and xlsx siblings live in the same repo and install together through the same document-skills plugin, alongside a pdf skill. All four were last updated together in July 2026 and share the same proprietary license.

Skill review · Anthropic official

Claude PowerPoint Skill

The claude powerpoint skill this search points to is Anthropic's own pptx skill, published in the anthropics/skills repository at skills/pptx alongside docx, xlsx, and pdf siblings. It is the production skill behind Claude's file-creation feature: a 20KB instruction file plus Python helper scripts that teach Claude to build new decks with pptxgenjs, edit existing .pptx and .potx files by unpacking and rewriting the raw OOXML, and read decks via markitdown and rendered thumbnail grids. The repo holds roughly 173,000 stars and was last pushed August 2026; the pptx folder itself was last updated July 2026. One thing to know before installing: on Claude.ai paid plans this skill is already built in, so installation only matters for Claude Code (via the plugin marketplace) and the API. Note the license, too — the document skills are source-available, not open source, and Anthropic's terms prohibit derivative works and redistribution.

View the sourceProprietary licensed · 172,954★ · facts checked September 1, 2026

By Robert MacKelfresh

Founder, Automation Squad · September 1, 2026

Install

1In Claude Code, register Anthropic's marketplace: /plugin marketplace add anthropics/skills
2Install the document skills plugin: /plugin install document-skills@anthropic-agent-skills — this installs pptx plus the docx, xlsx, and pdf siblings in one step
3Trigger it by mentioning a deck or a .pptx/.potx file ("build me a pitch deck as .pptx") — the skill loads automatically whenever PowerPoint files are involved
4On Claude.ai: nothing to install — document skills are already available on paid plans and power the built-in file-creation feature
5On the Claude API: attach the prebuilt pptx skill via the Skills API with the code-execution tool (see the Skills API quickstart in Anthropic's platform docs)

What it does

Create decks: Writes pptxgenjs scripts to generate native .pptx files — native charts via addChart, speaker notes, icons rendered from react-icons to PNG. The SKILL.md documents an unusually long list of file-corruption footguns (a # in hex colors, negative shadow offsets, outEnd labels on stacked bars, combo charts missing axis declarations) and how to avoid each.
Edit existing decks and templates: Unzips the .pptx, edits ppt/slides/slideN.xml directly, rezips. Helper scripts: add_slide.py duplicates slides with all package bookkeeping, clean.py purges orphaned slides/media/rels, and .potx corporate templates unpack and repack identically.
Read and analyze: Extracts per-slide text with markitdown; thumbnail.py renders a labeled grid of every slide so Claude can map content onto a template's layouts before filling it in.
Validate and convert: scripts/office/validate.py runs schema, relationship, content-type, and chart checks, naming the fix for each failure (with --original to baseline against a template); a LibreOffice wrapper converts to PDF/images and legacy .ppt to .pptx.
Design guidance: Bakes in ten named color palettes, layout patterns (two-column, icon rows, stat callouts, half-bleed images), and a visual-motif rule so output is not plain bullets on white.

Common questions

Is the Claude PowerPoint skill official?: Yes. Anthropic ships it in the anthropics/skills repository at skills/pptx, and it is the same skill that powers Claude's built-in file creation. It is source-available under a proprietary license, not open source.
Can it edit my existing corporate template?: Yes. It unpacks .pptx and .potx files, edits the slide XML directly, and ships scripts to duplicate slides with correct package bookkeeping and render a thumbnail grid of every layout. A validator can baseline checks against the original template so its quirks don't read as your errors.
Do I need to install it on claude.ai?: No. Paid Claude.ai plans already include the document skills. Installation only matters in Claude Code, via /plugin marketplace add anthropics/skills then /plugin install document-skills@anthropic-agent-skills, or on the API via the Skills API.
What about Word and Excel files?: The docx and xlsx siblings live in the same repo and install together through the same document-skills plugin, alongside a pdf skill. All four were last updated together in July 2026 and share the same proprietary license.

Before you install

Not open source. The pptx, docx, xlsx, and pdf skills carry a proprietary Anthropic license: no derivative works, no redistribution, no retaining copies outside Anthropic's services. The example skills elsewhere in the same repo are Apache 2.0; the repo-level license field is unset because of this mix.
The repo README carries an explicit disclaimer: skills are for demonstration and educational purposes, and Claude's in-product behavior may differ from the repo versions.
Installing it on Claude.ai is redundant — paid plans already run these document skills under the hood; the install path only matters for Claude Code and the API.
Toolchain assumptions: pptxgenjs, markitdown, LibreOffice, and various npm packages are described as preinstalled because the skill targets Anthropic's sandbox. On your own machine, Claude Code must install Node/Python dependencies itself, and the skill notes bare soffice hangs (a wrapper script is provided).
The 172,954 stars belong to the whole anthropics/skills mono-repo, not the pptx skill specifically.
The pptx folder was last touched 2026-07-17 ("Update docx, pptx, and xlsx skills"), while the repo was pushed more recently (2026-08-21) — skill-level updates arrive in batches, not continuously.
The skill's own documentation concedes that generated files can silently corrupt in numerous ways; the post-generation validate.py pass is effectively mandatory, which adds a step to every run.

Facts come from the skill's own repository and docs on the date above, via the GitHub API — not from memory, and never from a sponsor.

Worth comparing

Felo Slides skill — Third-party presentation skill with a built-in research engine and polished templates; a commercial service, not a self-contained repo skill.
Community pptx skills on marketplaces — Unofficial "PowerPoint Creator"-style skills on mcpmarket.com and skills.sh; quality and maintenance vary, verify before use.
python-pptx (DIY scripting) — Roll your own generation scripts; Anthropic's skill itself warns the library cannot duplicate slides and collapses formatting when setting text_frame.text.

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