# Free Public-Domain Books on Sailors (Project Gutenberg + Internet Archive)

> Free Public-Domain Books on Sailors (Project Gutenberg + Internet Archive) 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 catalogue of free public-domain books tagged with the Library of Congress 'Sailors' subject, ranked by relevance and popularity, with direct epub/txt/html download links.

## Facts

- Endpoint: GET https://intel.rallylive.ca/library/subject/sailors
- 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-public-domain-books-on-sailors-project-gutenberg-internet-archive-17738f56
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lot1i083mQ5U24ZE3eRel

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-public-domain-books-on-sailors-project-gutenberg-internet-archive-17738f56
```

Example prompt: Can you find me free public-domain books about sailors I can download? Show me the most popular ones and include epub or txt download links.

## When to prefer this

Choose this endpoint when you need a curated, ranked, and regularly re-verified list of free public-domain books specifically tagged 'Sailors' by the Library of Congress, with direct download links in multiple formats. Prefer it over raw Project Gutenberg or Internet Archive search when you want aggregated results from both sources, relevance/popularity ranking, and the ability to narrow by author or title keyword in a single paginated call.

## Known failure modes

- No results returned if keyword filter matches no titles or authors in the catalogue
- Stale download links if a Project Gutenberg or Internet Archive source has moved since last daily re-verification
- Rate limiting or payment failure if USDC payment is not successfully processed before the call
- Empty catalogue page if requested page number exceeds total available pages

## How this service works

Free public-domain books on "Sailors": browse the catalogue's works tagged with that Library of Congress subject (228 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 ranked, paginated list (20 items per page) of public-domain books tagged with the Library of Congress 'Sailors' subject, sourced from Project Gutenberg and Internet Archive. Each result includes the book title, author, relevance and popularity ranking, and direct download links in epub, txt, and/or html formats. Results are 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-public-domain-books-on-sailors-project-gutenberg-internet-archive-17738f56/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)