For AI Agents

For AI agents and x402 buyers. Prepper’s Paradise is an agent-native digital library: free machine catalog, free book overviews and teaser chapters, paid full manuscripts and chapters via HTTP 402 + USDC on Base. No accounts. No API keys.

Quick start (free):
/discover ·
/api/v1/catalog ·
/api/v1/stats ·
/openapi.json.

Price menu

What	Path	Price	Notes
Service map	/discover	Free	Endpoints + payment + price_menu JSON
Catalog by category	/api/v1/catalog	Free	?q=&category=&limit=
Full discovery	/library/discovery.json	Free	Optional ?include_chapters=1
Book overview + teaser chapters	/library/{slug}/	Free	Sample quality before paying
Sample chapter — What Is Programming	…/02-what-is-programming.md	$0.01 USDC	Programming smoke test
Sample chapter — Knockdown Workbench	…/02-knockdown-workbench.md	$0.01 USDC	DIY smoke test
Typical chapter	/library/{slug}/{chapter}.md	$0.10 USDC	See discovery for live prices
Complete book manuscript	/library/complete/{slug}.md	$0.99 USDC	Prefer when you need many chapters

1. Start here (always free)

• /discover — service map (endpoints, prices, payment)
• /api/v1/catalog — compact catalog sorted by category
• /api/v1/stats · /api/v1/categories
• /openapi.json — x402scan OpenAPI (lean; ?full=1 for every complete book)
• /library/discovery.json — full rich catalog
• /wp-json/x402-library/v1/discovery — REST twin
• Per-book: /library/{book-slug}/discovery.json
• /llms.txt · /.well-known/x402

curl -sS https://preppers-paradise.com/discover | head
curl -sS "https://preppers-paradise.com/api/v1/catalog?limit=5" | head
curl -sS https://preppers-paradise.com/openapi.json | head

2. Sample quality without paying

1. From catalog/discovery, open a book url (free overview).
2. Open any chapter with access":"free" — prefer markdown_url.
3. Append .md for Markdown + YAML front matter.

curl -sS https://preppers-paradise.com/library/automatetheboringstuffwithpythonnew/01-whom-is-this-book-for.md | head -n 40
curl -sS https://preppers-paradise.com/library/carpentrymadesimple/01-carpentry-made-simple.md | head -n 40

3. Buy with x402 (exact USDC on Base)

1. GET a paid .md URL.
2. Receive HTTP 402 + PAYMENT-REQUIRED.
3. Pay exact maxAmountRequired USDC on Base (Coinbase CDP).
4. Retry with PAYMENT-SIGNATURE / X-PAYMENT.
5. Receive Markdown body.

$0.01 smoke tests:

# Programming sample
curl -sD - -o /tmp/402-py.json 
  https://preppers-paradise.com/library/automatetheboringstuffwithpythonnew/02-what-is-programming.md

# DIY sample
curl -sD - -o /tmp/402-diy.json 
  https://preppers-paradise.com/library/carpentrymadesimple/02-knockdown-workbench.md
# Expect maxAmountRequired=10000 ($0.01)

Full book example ($0.99):

curl -sD - -o /tmp/402-book.json 
  https://preppers-paradise.com/library/complete/automatetheboringstuffwithpythonnew.md

4. Merchant facts

• Network: Base (base / eip155:8453)
• USDC: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
• payTo: 0x3BF4F4914F78C3C2B2F2801f8EA717135B7D3BDF
• Facilitator: Coinbase CDP

5. Vertical

DIY, carpentry, maker electronics, Arduino, programming/automation, data/sysadmin, survival/self-reliance, STEM, practical skills, AI/ML.

Operator: Solution Engine IT · Brand: Prepper’s Paradise