# Free Books in Esperanto

> Free Books in Esperanto 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 paginated public-domain and free-licensed Esperanto-language books from Project Gutenberg and Internet Archive, sorted by popularity, with download links in multiple formats.

## Facts

- Endpoint: GET https://intel.rallylive.ca/library/language/eo
- 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-in-esperanto-ee8724a5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rCQtPf6YQhuyQoCqxYvmj

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-in-esperanto-ee8724a5
```

Example prompt: Can you find me free Esperanto books I can download? Show me the most popular ones — ideally with epub or txt links — and search within titles and authors for anything related to poetry.

## When to prefer this

Choose this endpoint when you need a curated, daily-verified, paginated index of free Esperanto-language books with direct download links in multiple formats. It is preferable over raw web scraping when you need reliable structured results across both Project Gutenberg and Internet Archive in a single call, sorted by popularity.

## Known failure modes

- No results found for a very narrow or misspelled search query
- Rate limiting or payment failure if USDC payment is not properly handled
- Empty page returned if page number exceeds total result count
- Intermittent unavailability of upstream sources (Project Gutenberg / Internet Archive)

## How this service works

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

## Output

A paginated list of up to 20 Esperanto-language books per page, each with title, author, subject tags, and download links in available formats (epub, txt, html, scans). Results are sourced from Project Gutenberg and Internet Archive, sorted by popularity, and 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-in-esperanto-ee8724a5/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)