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Relief Pitcher AI
A Claude Code Plugin that auto-generates presentation materials — so AI can pitch in your place.
daida-ai (from Japanese daida 代打 — pinch hitter): just as a relief pitcher steps onto the mound when you can't, this plugin takes over and delivers your entire presentation for you.
Features
- Input a talk theme and generate a structured outline in Markdown
- Build slide decks from the outline
- Slides are generated in PowerPoint format
- Pre-designed slide templates (dark tech, warm casual, formal business)
- Slides use proper layouts (not blank canvases) for consistent formatting
- Titles and body text are set in outline-accessible placeholders
- Write talk scripts (speaker notes) for each slide
- Multiple speaking styles: casual, keynote, formal, humorous
- Synthesize narration audio from the talk scripts
- Pronunciation dictionary auto-corrects common TTS misreadings
- TTS scripts can be exported for manual editing
- Embed synthesized audio into the slides
- Configure automatic slideshow playback
Supported Formats
PPTX and ODP (Open Document Presentation)
Installation
Prerequisites
Step 1: Add the marketplace
In Claude Code, run:
/plugin marketplace add hawkymisc/daida-ai
Step 2: Install the plugin
/plugin install daida-ai@hawkymisc-daida-ai
Step 3: Setup
On first use, run /daida-ai:relief-pitcher-ai and you will be prompted to execute the setup script.
Follow Claude's instructions and approve:
bash <plugin-dir>/skills/relief-pitcher-ai/scripts/setup.sh
This creates a Python virtual environment and installs all dependencies.
Usage
Invoke in Claude Code:
/daida-ai:relief-pitcher-ai
Or use natural language:
- "Create LT slides for me"
- "Generate a presentation"
- "Make a pitch deck"
Workflow
You'll be asked interactively:
- Theme: What the talk is about
- Audience: Who the talk is for
- Duration: How many minutes (default: 5)
- Template:
tech / casual / formal
- TTS Engine:
edge (default) / voicevox
The full pipeline runs automatically: Outline → Slides → Talk Script → Audio Synthesis → Audio Embedding → Slideshow Setup.
Help
Ask "help", "show usage", or "how does this work?" to see the full pipeline diagram.
Restarting from a Step
If you modify the PPTX or TTS scripts midway, you can say "restart from Step 4" to resume from that step.
Common examples:
- After editing the PPTX manually → "restart from Step 4" to regenerate audio
- After fixing pronunciation → "restart from Step 4c" to re-run audio synthesis only
- To change the template → "restart from Step 2" to regenerate slides
Fixing TTS Pronunciation
If TTS produces incorrect readings, you can fix them in two ways:
- Pronunciation dictionary: Define substitution rules in
skills/relief-pitcher-ai/assets/pronunciation_dict.tsv (applied automatically at export time)
- Manual editing: Export the TTS script and edit it directly in a text editor
Templates
| Template | Style | Font |
|---|
tech | Dark theme, cyan accents | Noto Sans CJK JP |
casual | Warm tones, rounded design | Noto Sans CJK JP |
formal | White base, business-oriented | Noto Serif CJK JP / Noto Sans CJK JP |
Note: Templates are currently optimized for Japanese content. For other languages, system fonts will be used as fallback.
TTS Engines
| Engine | Description | Notes |
|---|
| edge-tts | Microsoft Edge TTS. No installation required. Supports multiple languages. | Default |
| VOICEVOX | Character voices (e.g., Zundamon). Japanese-language TTS engine. | Requires VOICEVOX Engine running |
Validation
The following validations are automatically applied to the slide specification JSON (generated by LLM):
- Slide count (1–20 slides)
- Layout-field consistency (e.g.,
two_content requires left/right)
- Text length limits (title: 100 chars, body item: 200 chars, etc.)
- Audio file format (MP3/WAV) and size (max 50 MB)
- Estimated speaking duration check
Notes
Playback in LibreOffice Impress
Auto-advance (automatically moving to the next slide after audio finishes) only works in PowerPoint (Windows / macOS).
LibreOffice Impress does not support auto-advance. This is a known limitation where LibreOffice does not correctly process PPTX timing settings (advTm) — see Bug 101527.
When using LibreOffice Impress:
- Advance slides manually (click or arrow keys)
- Or set auto-advance times manually via the "Slide Transition" panel in LibreOffice
About Fonts
