PPTX

Before you start: read this whole install prompt, tell me in a few lines what this skill does and what installing it involves, and wait for my go-ahead before you do anything else. Prerequisites — Source-available licence warning first: this skill is NOT Apache-2.0 and not open source. Its own LICENSE.txt (read it in the folder) says use of these materials is governed by my agreement with Anthropic for its services (or, with no separate agreement, Anthropic's Consumer or Commercial Terms of Service), and its additional restrictions include not retaining copies of these materials outside the Services, not distributing them to any third party, and not creating derivative works. Installing this folder copies the materials onto my machine: only proceed if my own Anthropic agreement covers that, and stop and tell me if that is not clear. No account, key or payment is needed to copy the files, and no companion script is run during installation — the Python helpers in the folder are copied as-is only. At use time (not during install) the skill needs the pptxgenjs npm library (stated as preinstalled, npm install only if requiring it fails), Python with markitdown, Pillow, defusedxml and lxml, LibreOffice and pdftoppm from Poppler, all running locally on my own files. Install "PPTX" for me. It handles a presentation file as input, output or both: create a deck with a pptxgenjs script (with detailed gotchas on layouts, colours, charts, icons and the option objects the library mutates), read a deck as text with markitdown or as a labelled thumbnail grid, edit an existing deck or fill a template by unzipping it and editing the slide XML, duplicate slides only through its add-slide script, clean orphaned parts after deletions, then run its required quality checks — a format validator, a text check for leftover placeholders, and a visual pass over slide images rendered through LibreOffice and Poppler. Its folder holds the main instructions, a proprietary LICENSE.txt, Python companion scripts, and the Office XML schema and validator library shared with the other Anthropic document skills. Repository: https://github.com/anthropics/skills (the skill is the whole skills/pptx/ folder at the pinned commit: SKILL.md plus 55 companion files, 56 files in total) Pinned version: install the code at commit dbd4588f9e1033efb41dad4bef2f7947c8993d44 exactly. Do not substitute a newer version. If this commit is unreachable, stop and tell me. 1. Clone https://github.com/anthropics/skills into a temporary folder, check out commit dbd4588f9e1033efb41dad4bef2f7947c8993d44, and copy the skills/pptx/ folder from that checkout. Then compare every file in the folder with the fingerprints recorded for this listing on 2026-10-22: [FINGERPRINTS] - LICENSE.txt: SHA-256 79f6d8f5b427252fa3b1c11ecdbdb6bf610b944f7530b4de78f770f38741cfaa - SKILL.md: SHA-256 a7ff03e2c85b636f55232a6b1555f5dd90216b7a1a359ab289d8364e6acbc6a0 - scripts/__init__.py: SHA-256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 - scripts/add_slide.py: SHA-256 3922f819ee1f6b8bdc6aa146d1a86de70640f5f919321fe3f01a764482ff69c9 - scripts/clean.py: SHA-256 5c808cd4dff7e02661ef3c68b5917f4e25097cc6610c92a3a7df4a6366a5c3c1 - scripts/office/helpers/__init__.py: SHA-256 678e42456d9e10923c8b9a93691cdd993de3433448a184fa72a0c31f4ae086d5 - scripts/office/helpers/pptx_chart.py: SHA-256 47ac266f7d39d11ede6bb0d1f3a19d801394fd2964636f1b48beb701f1832964 - scripts/office/helpers/pptx_slide.py: SHA-256 7b9f69b4a5bd6a2d9eabf9e0e3e796d7a421373145f6a8cd11f60b7ba2d6a5d0 - scripts/office/helpers/pptx_theme.py: SHA-256 ebb54c56e9c13807f5f98f0cae22d47cdd0162da8525eaa664e3f2c8c8d6bb03 - 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scripts/office/schemas/microsoft/wml-symex-2015.xsd: SHA-256 16f6f8072249f431370723c2cd8974672e0d9c897e00e97dd918079df934871b - scripts/office/soffice.py: SHA-256 df2c8d7249c132a4512d744482e4b5ed0ecbe885f0bcfb1295e7e6a7ced0432c - scripts/office/validate.py: SHA-256 346a4c89d92fff55e610f11efda48c30228815b29bdb10b987e48f7af70acf1e - scripts/office/validators/__init__.py: SHA-256 83e0f035c5abea238d3f2c3968afbd511ed022b527b7c9cb60a9434cc34ff987 - scripts/office/validators/base.py: SHA-256 f818ea28c793ba42960fa4498265e2632a62c86f7b5d6aff6fa89dacc02d59ea - scripts/office/validators/docx.py: SHA-256 93d3444c0ef3f043d21a2285c46d2cda478426b930dc33dcf3b11265935517b5 - scripts/office/validators/pptx.py: SHA-256 17eadad2b7a8374ccbe4cda45693bcd6a36f9d61a7d60f9c9ceef9464dec8299 - scripts/office/validators/redlining.py: SHA-256 ed50d0885eee4b9c387f546b059bcaed64086815880a5167336244f93e305123 - scripts/thumbnail.py: SHA-256 94ef83a84346aa2d63913de0d42bb2fe902ccdc17bfac6130096ca758381793c If a file does not match, it changed since the listing was prepared: do not install it yet, tell me what you found and let me decide. 2. Read SKILL.md in full, and tell me in plain words: what the skill does when used, what it connects to, whether it reads or sends any personal information or credentials, and anything that seems unusual. Stop on any red flag and tell me before going further. Confirm these points from the files: - The folder holds 56 files: SKILL.md, LICENSE.txt (proprietary, Anthropic terms), 15 Python files (add_slide, clean and thumbnail helpers, the LibreOffice wrapper under scripts/office/, and the validator library), and 39 Office XML schema (.xsd) files that are data schemas used by the validators, not programs. Nothing in the folder is run during installation; the scripts are copied as-is. - Nothing is sent anywhere during installation itself; the only download at install time is the skill folder from GitHub at the pinned commit. No presentation of mine is read, converted or sent during installation. - At use time everything the skill describes runs locally on my own presentation files: unzipping and editing their XML, running the companion Python scripts, and converting through my local LibreOffice and Poppler tools to render and inspect slides. The instructions name no third-party service to send decks to. - The licence point from the prerequisites is part of the safety picture: these materials are source-available under my Anthropic agreement with the restrictions in LICENSE.txt, not Apache-2.0. Do not present them as open source, and do not redistribute the installed folder. - Do not run any companion script, do not convert or open any deck of mine, and do not use the skill in any way during this install: using it is a separate step that only starts when I ask for it later. 3. When I say "yes, install", install it as a skill: copy the whole pptx folder into the agent's skills directory, in a folder named exactly "pptx", keeping its 56 files in their original relative layout (SKILL.md at its root). 4. Verify with no network calls: frontmatter valid (name: pptx), the 56 files in place with matching fingerprints. Do not run anything from the folder and do not use the skill to verify. 5. Report what was installed, where, and what I still need to do myself (for example: that using it needs a local setup with pptxgenjs, markitdown and the listed Python libraries, LibreOffice and Poppler, that its files are source-available under my Anthropic agreement (not Apache-2.0) with the restrictions in its LICENSE.txt, and that its companion scripts run only at use time, on my own files, locally). GitHub is optional: if I have a GitHub account or the gh CLI, you may use it; otherwise public access is fine. Never require it unless it's in the prerequisites above. Rules: don't touch anything outside the temp folder and the install target. If anything looks off, stop and ask me.