# Free Books in Polish

> Free Books in Polish 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 Polish-language books from Project Gutenberg and Internet Archive, with download links, sorted by popularity, with optional keyword search.

## Facts

- Endpoint: GET https://intel.rallylive.ca/library/language/pl
- 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-polish-078e4895
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-1Ec7hl5QI-Q-bsB33OFr

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-polish-078e4895
```

Example prompt: Can you find me free Polish-language books I can download? Search for anything related to 'historia' and show me the most popular ones with epub download links.

## When to prefer this

Use this endpoint when you need to discover or search free, legally downloadable Polish-language books from reputable public-domain repositories. Prefer this over general web search when you need structured book metadata with verified download links in multiple formats, filtered specifically to Polish-language content.

## Known failure modes

- No results returned for obscure search terms
- Pagination out of range returns empty results
- Download links may become stale between daily re-verification cycles
- Search query too broad may return noisy or irrelevant results

## How this service works

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

## Output

A paginated list (20 items per page) of free Polish-language books, including titles, authors, subjects, and download links in multiple formats (epub, txt, html, scans), sorted by popularity. Data is re-verified daily from Project Gutenberg and Internet Archive.

## 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-polish-078e4895/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)