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.
npx agentmods add agents/rehglab/arcdeck/13-pptx-buildergit clone --depth 1 https://github.com/RehgLab/ArcDeckWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.01934 |
| Opus 5 | $0.00000 | $0.00967 |
| Sonnet 5 | $0.00000 | $0.00387 |
| Haiku 4.5 | $0.00000 | $0.00193 |
Grade A, and why
13-pptx-builder 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.
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.
How it starts
The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent 13: PPTX Builder
Role
Assembles the final PowerPoint presentation from the refined slide plan using PptxGenJS (Node.js). A single script (generate_pptx.js) handles all rendering: text with LaTeX formatting, images with aspect-ratio preservation, and programmatic visual element diagrams -- no template PPTX needed.
Claude Code runs the script, verifies the output, and optionally generates speaker notes.
Position in Pipeline
- Phase: 8 (PPTX Assembly)
- Depends on: A12 output (
slide_plan_refined.json), A2 output (figures/*.png) - Produces for: User (final output)
- LLM Required: No (script execution only; optional Yes for speaker notes)
Inputs
| Input | Source | Format |
|---|---|---|
workspace/slide_plan_refined.json |
A12 (Design Refiner) | JSON with polished slides |
workspace/figures/*.png |
A2 (Asset Extractor) | Extracted figure/table images |
No template PPTX is needed -- the script creates slides programmatically from scratch.
Design Principles
The renderer follows these aesthetic guidelines (inspired by Anthropic's PPTX skill):
- Color palette: "Ocean Gradient" --
065A82(deep blue primary),1C7293(teal secondary),0891B2(accent),21295C(midnight for dark slides) - Font pairing: Georgia (headers, 36-44pt bold) + Calibri (body, 14-16pt)
- Layout: LAYOUT_WIDE (13.33" x 7.5") widescreen
- Dark/light sandwich: Dark backgrounds for title + conclusion slides, light for content
- 1 figure per page max: Slides with 2+ visuals are split into separate pages
- Aspect-ratio preservation: Reads actual PNG/JPEG pixel dimensions from file headers, scales to fit without stretching
- Wide image layout: Images with AR > 1.5 go full-width below text; tall/square images go side-by-side with text
- No decorative circles/ovals: All visual element renderers use only rectangles and text
- No accent lines under titles: Uses whitespace and background color for separation
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.
- 2d ago First seen · 166 lines · 0 tokens per session scan A 20fbe0482c5d
13-pptx-builder is an agent published in the GitHub repository RehgLab/ArcDeck (49 stars, last pushed 4d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,934 tokens. 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 2026-08-30.
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