# Companion Book Outline

**Price:** $0.50 USDC (`500000` atomic) · exact · Base `eip155:8453`  
**Status:** Phase 0 discovery · sellable:false · listed:false  
**ID:** `companion_book_outline`  
**Tags:** content, books

Topic + audience + chapter count → structured outline with affiliate-safe CTA slots. Opens the mid-ticket companion-book lane without income claims.

## Inputs

- `topic` (string, required) — book topic
- `audience` (string, required) — who it's for
- `chapter_count` (integer, optional) — 3–24

## Output

Structured outline + affiliate-safe CTA slots

## Sample

```json
{
  "topic": "shipping small games",
  "audience": "solo indie builders",
  "chapter_count": 8
}
```

## Endpoints (Phase 1+)

- HTTP: `POST https://api.defifintechdirectory.com/tools/companion_book_outline`
- MCP: `companion_book_outline` @ `https://mcp.defifintechdirectory.com/mcp`
- payTo: `0x96873Fb532C630aE88c5e8A5dF5ef430c92dfF32`

## Links

- Catalog: https://defifintechdirectory.com/catalog.json
- How to pay: https://defifintechdirectory.com/how-to-pay.md
- Human page: https://defifintechdirectory.com/tools/companion_book_outline.html