# Free Audiobooks by Subject: Americans

> Free Audiobooks by Subject: Americans is a paid API for AI agents from library.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Returns a paginated list of free public-domain audiobooks tagged with the subject 'Americans', including runtime, language, and MP3 links, sorted by most downloaded.

## Facts

- Endpoint: GET https://library.intel.rallylive.ca/library/audiobooks/subject/americans?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-audiobooks-by-subject-americans-f578cb83
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UK3qPycTEZjeM-CYKmlJF

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-audiobooks-by-subject-americans-f578cb83
```

Example prompt: Can you find me free public-domain audiobooks tagged with the subject 'Americans'? I want the most downloaded ones with their runtimes and MP3 links — maybe narrow it down to biographies.

## When to prefer this

Choose this endpoint when you need to discover or list free, public-domain audiobooks specifically tagged with the 'Americans' subject from LibriVox and Internet Archive, especially when you want popularity-ranked results with direct MP3 links. Prefer this over general web search when you need structured metadata (runtime, language, download links) rather than raw search results.

## Known failure modes

- No results returned if keyword filter is too narrow or misspelled
- Payment failure if USDC balance is insufficient for the $0.01 per-page fee
- Empty result set if no audiobooks match the combined subject and keyword filters
- Pagination beyond available results returns empty or fewer records

## How this service works

Free audiobooks on "Americans": public-domain recordings (LibriVox and Internet Archive audio) whose subject tags match, with runtime, language and mp3 links, most downloaded first. Add words to narrow. $0.01 per page of 20.

## Output

A paginated list (20 per page) of public-domain audiobook records tagged 'Americans', each including title, runtime, language, MP3 download URL(s), and download count, sorted by most downloaded first.

## 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-audiobooks-by-subject-americans-f578cb83/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from library.intel.rallylive.ca](https://www.zero.xyz/host/library.intel.rallylive.ca/llms.txt)