# Free Spanish Books Library

> Free Spanish Books Library 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).

Returns a paginated list of free public-domain and open-licensed Spanish-language books from Project Gutenberg and Internet Archive, sorted by popularity, with download links in epub, txt, html, and scan formats.

## Facts

- Endpoint: GET https://intel.rallylive.ca/library/language/es
- 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-spanish-books-library-d8cbda66
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M_DZ5ixbzQYRqmIZQzJMD

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-spanish-books-library-d8cbda66
```

Example prompt: Can you find me free Spanish-language books about historia or poesia that I can download as epub or txt files, showing the most popular ones first?

## When to prefer this

Choose this endpoint when you need free, legally downloadable Spanish-language books with direct download links across multiple formats (epub, txt, html, scans). It is ideal over general web search when you specifically want public-domain or free-licensed Spanish works ranked by popularity, sourced from trusted repositories like Project Gutenberg and Internet Archive, and re-verified daily.

## Known failure modes

- No results returned if search keywords match no Spanish titles, authors, or subjects
- Payment failure if USDC balance is insufficient for the $0.01 per page fee
- Empty page if requested page number exceeds available results
- Occasional dead download links if source (Gutenberg/Archive) restructures URLs between daily verification cycles

## How this service works

Free books in Spanish: public-domain and free-licensed Spanish-language works from Project Gutenberg and Internet Archive with download links (epub, txt, html, scans), most popular first; add words to search within Spanish titles, authors and subjects. Re-verified daily. $0.01 per page of 20.

## Output

A paginated list of up to 20 Spanish-language books per page, sorted by popularity, each entry including the title, author, subject tags, and download links in available formats (epub, txt, html, and/or scanned images), sourced from Project Gutenberg and Internet Archive. Results are re-verified daily for link validity.

## 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-spanish-books-library-d8cbda66/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)