PPTX — PowerPoint / editable slides

Create .pptx PowerPoint slides (or .odp / Google Slides variant) from structured content. Invoked by deck (Path B) when the user wants editable slides rather than the fast HTML/PDF path.

Inputs

From the caller:

• draft: workspace path of presentation.md (format-agnostic markdown produced by deck Stage 2)
• target format: pptx (PowerPoint), odp (LibreOffice), gslide (Google Slides)
• filename: e.g. q3-results-presentation.pptx
• theme: optional — default "clean light" if unset

Backend per format

pptx (native, fast)

Use python-pptx in the workspace:

from pptx import Presentation
from pptx.util import Inches, Pt
prs = Presentation()
# Title slide
slide = prs.slides.add_slide(prs.slide_layouts[0])
slide.shapes.title.text = '<title>'
slide.placeholders[1].text = '<subtitle>'
# Content slide
slide = prs.slides.add_slide(prs.slide_layouts[1])
slide.shapes.title.text = '<heading>'
tf = slide.placeholders[1].text_frame
for i, bullet in enumerate(bullets):
    p = tf.paragraphs[0] if i == 0 else tf.add_paragraph()
    p.text = bullet
    p.level = 0
prs.save('<filename>.pptx')

Write to workspace. Attach to reply.

odp (via cerase-office-converter)

Create .pptx natively, then:

call_recipe("cerase-office-converter.convert_pptx_to_odp", {input_b64: <base64 of .pptx>})

gslide (via google-workspace MCP)

call_recipe("google-workspace.slides_create", {
  title: "<filename without ext>",
  slides_markdown: <full file contents>,
})

Returns {deck_id, deck_url}.

Style rules

• Cover slide: title (40-44pt) + subtitle (18-22pt). No bullet list on cover.
• Content slides: title at top (28-32pt), ≤ 7 bullets in body (16-18pt). Use level 0 for top bullets, level 1 for sub-bullets (max).
• Numbers > adjectives: "€2.3M revenue Q3" beats "strong revenue this quarter".
• One concept per slide: if you find yourself cramming 2 distinct points, split into 2 slides.
• No clipart / decorative images: PoC slides are content-first. Photos go in workspace separately if uploaded.

Slide count discipline

If the brief said "10 slides", produce 8-12 (10% wiggle room). If the source content overflows, propose: "il materiale è denso, ti consegno 14 slide o ne lascio fuori X?". Don't silently produce 25 slides when asked for 10.

Don't

• Don't try to embed videos / audio in PPTX — fragile across viewers.
• Don't use color outside title (background) + bullet (text) — themes break otherwise.
• Don't auto-fit text: when a slide overflows, split it. Auto-fit produces unreadable 8pt slides.