Agent skill

PPTX Slide Specification

by wshobson in wshobson/agents

A skill your agent uses when authoring or repairing a coordinate-explicit JSON specification for an editable PPTX deck.

MITAuto-check passedDocuments & Office

Install PPTX Slide Specification

skills CLI
$ npx skills add wshobson/agents --skill pptx-slide-specification -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install wshobson/agents pptx-slide-specification --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/wshobson/agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/pptx-deck-creation/skills/pptx-slide-specification .claude/skills/pptx-slide-specification && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
pptx-slide-specification
GitHub stars
40k
Token cost
~489 tokens
SKILL.md length
250 words
Files
2 (incl. references)
Skills in repo
142
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when authoring or repairing a coordinate-explicit JSON specification for an editable PPTX deck.

  • Works in 6 steps: Use stable readable IDs, absolute… → Keep normal content inside the safe… → Use native text, shape, line, table, and… → …
  • Repairing a coordinate-explicit JSON specification for an editable PPTX deck
  • SKILL.md covers Required contract, Authoring rules and Build contract
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

PPTX Slide Specification is an agent skill from wshobson/agents. Use when authoring or repairing a coordinate-explicit JSON specification for an editable PPTX deck.

Its SKILL.md is about 490 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/layout-contract.md`).

It sits in Documents & Office, covering PowerPoint presentations and Slides and decks. It works with Microsoft PowerPoint. The repository describes itself as: Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, Google Antigravity, and Pi. The licence is MIT.

When your agent uses it

  • Repairing a coordinate-explicit JSON specification for an editable PPTX deck
  • Tasks that involve PowerPoint presentations
  • Tasks that involve Slides and decks

Example prompts

  • “/pptx-slide-specification”

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Use stable readable IDs, absolute groups, and positive inch dimensions.
  2. Keep normal content inside the safe margin and above the footer rail. Only background layout_design objects may be full bleed.
  3. Use native text, shape, line, table, and image objects. Recreate labels and values from any supporting visual as native objects.
  4. Give meaningful images alt text. Record source_ref for sourced claims.
  5. Keep content text at 9 pt or greater; shorten, resize, or split dense content before reducing type.
  6. Use shared grids, consistent gaps, explicit color, explicit font size, and an intentional z-order.

What it can do on your machine

Read from SKILL.md and the folder at commit 46891e7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

PPTX Slide Specification loads about 489 tokens when it runs, and up to ~860 if it reads all its reference files. Until then it costs about 31 tokens; SKILL.md has 250 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~31
When it runs · the whole SKILL.md, loaded when a task matches
~489
With references · SKILL.md plus every file in references/, read only if the agent opens them
~860

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from wshobson/agents at commit 46891e7, republished under its MIT licence (© wshobson). 250 words, ~489 tokens.

Download SKILL.mdSave it as .claude/skills/pptx-slide-specification/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
pptx-slide-specification
description
Use when authoring or repairing a coordinate-explicit JSON specification for an editable PPTX deck.

PPTX Slide Specification

Author final coordinates directly in layout_tree. No renderer may decide placement, shrink text, or infer layout after the audit.

Required contract

  • The root JSON contains summary and slides.
  • Every slide has a stable id, a message-led title, an accessibility reading order, and a complete layout_tree.
  • A layout tree declares slide size, root group, id-keyed groups and objects, final inch bboxes, styles, z-indexes, and classifications.
  • Every meaningful object has id, kind, role, classification, content, style, bbox, and z_index.
  • Production summary contains an explicit layout_policy (safe margin, content bottom, footer top, minimum gap) and accessibility metadata.

Authoring rules

  1. Use stable readable IDs, absolute groups, and positive inch dimensions.
  2. Keep normal content inside the safe margin and above the footer rail. Only background layout_design objects may be full bleed.
  3. Use native text, shape, line, table, and image objects. Recreate labels and values from any supporting visual as native objects.
  4. Give meaningful images alt text. Record source_ref for sourced claims.
  5. Keep content text at 9 pt or greater; shorten, resize, or split dense content before reducing type.
  6. Use shared grids, consistent gaps, explicit color, explicit font size, and an intentional z-order.

Build contract

A task-local builder starts from a blank slide layout and maps all bboxes with Inches(...). Explicitly set wrapping, disabled auto-size, text insets, anchors, alignment, fonts, colors, line settings, image aspect ratio, and hidden-slide state. Reject zero or negative geometry before adding an object.

See references/layout-contract.md for the compact schema and repair guidance.

© wshobson, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in plugins/pptx-deck-creation/skills/pptx-slide-specification of wshobson/agents.

  • SKILL.md
  • references/layout-contract.md

Open the folder on GitHubat commit 46891e7

Compare with similar skills

PPTX Slide Specification next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

PPTX Slide Specification compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
PPTX Slide Specification this skillwshobson/agents40k—~489Automated safety check: PassMIT
Image To Editable Pptningzimu/image-to-editable-ppt-skill2.8k—~4.3kAutomated safety check: PassMIT
Slidesfcakyon/claude-codex-settings1.2k1 repos~1.1kAutomated safety check: PassMIT
Ppt Image FirstNyxTides/ppt-image-first1.2k—~1.6kAutomated safety check: PassApache-2.0
Gpt Image2 PptJuneYaooo/gpt-image2-ppt-skills1.3k—~8.9kAutomated safety check: NotesApache-2.0
Paper Deckzsyggg/paper-craft-skills1.3k—~1.4kAutomated safety check: PassNone

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Questions about PPTX Slide Specification

What does PPTX Slide Specification do?

A skill your agent uses when authoring or repairing a coordinate-explicit JSON specification for an editable PPTX deck. PPTX Slide Specification is an agent skill from wshobson/agents. Use when authoring or repairing a coordinate-explicit JSON specification for an editable PPTX deck.

When should I use PPTX Slide Specification?

PPTX Slide Specification fits situations like: repairing a coordinate-explicit JSON specification for an editable PPTX deck; tasks that involve PowerPoint presentations; tasks that involve Slides and decks.

How do I install PPTX Slide Specification in Claude Code?

Run `npx skills add wshobson/agents --skill pptx-slide-specification -a claude-code`. Or copy the skill folder (plugins/pptx-deck-creation/skills/pptx-slide-specification in wshobson/agents) into .claude/skills/pptx-slide-specification in your project. Claude Code loads it when a task matches its description.

How do I install PPTX Slide Specification in Codex?

Run `npx skills add wshobson/agents --skill pptx-slide-specification -a codex`. Or copy the skill folder (plugins/pptx-deck-creation/skills/pptx-slide-specification in wshobson/agents) into .agents/skills/pptx-slide-specification in your project. Codex loads it when a task matches its description.

Can I use PPTX Slide Specification in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add wshobson/agents --skill pptx-slide-specification -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/pptx-slide-specification, .gemini/skills/pptx-slide-specification, .github/skills/pptx-slide-specification and .opencode/skills/pptx-slide-specification in your project.

What does PPTX Slide Specification need to run?

SKILL.md names no scripts, command-line tools or credentials: PPTX Slide Specification is instructions for the agent only.

Does PPTX Slide Specification access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is PPTX Slide Specification safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does PPTX Slide Specification use?

PPTX Slide Specification is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does PPTX Slide Specification use?

About 489 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 371 tokens, read only when the agent opens those files.

What are the alternatives to PPTX Slide Specification?

Skills that share tags, products or a category with PPTX Slide Specification: Image To Editable Ppt (ningzimu/image-to-editable-ppt-skill, 2.8k stars), Slides (fcakyon/claude-codex-settings, 1.2k stars), Ppt Image First (NyxTides/ppt-image-first, 1.2k stars) and Gpt Image2 Ppt (JuneYaooo/gpt-image2-ppt-skills, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains PPTX Slide Specification?

wshobson (a GitHub user) maintains it in wshobson/agents, which has 40,305 GitHub stars. The repository holds 142 skills in this directory. The repository was last updated on October 5, 2026.

Source: wshobson/agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.