# free-books-family

> free-books-family is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Browse and download free public-domain books tagged with the 'Family' Library of Congress subject from Project Gutenberg and Internet Archive, ranked by relevance and popularity.

## Facts

- Endpoint: GET https://intel.rallylive.ca/library/subject/family
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-books-family-a3eb2783
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NUCyVzCCurljnWBiMvel5

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability free-books-family-a3eb2783
```

Example prompt: Find me a list of free public-domain books about family from Project Gutenberg — show me the most popular ones with download links so I can grab the epub versions.

## When to prefer this

Choose this endpoint when you need a curated, pre-filtered list of free public-domain books specifically on the Family subject, with direct download links and popularity ranking — ideal over generic search when you want immediate access to epubs/txts without scraping Gutenberg directly. Best suited for agents building reading lists, recommending family literature, or automating ebook downloads.

## Known failure modes

- No results returned if query keywords match no titles or authors in the catalogue
- Stale download links if a book was recently removed from Gutenberg/Archive despite daily re-verification
- Rate-limiting or payment failure if USDC balance is insufficient for the $0.01 per call fee
- Empty pages if the requested page number exceeds the total available pages

## How this service works

Free public-domain books on "Family": browse the catalogue's works tagged with that Library of Congress subject (200 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

## Output

A paginated list (20 books per page) of public-domain books tagged with the 'Family' Library of Congress subject, ranked by relevance and popularity, including titles, authors, and direct download links in epub, txt, and html formats. The catalogue covers 200+ works from Project Gutenberg and Internet Archive, re-verified daily.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/free-books-family-a3eb2783/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)