# Free History Books Catalogue

> Free History Books Catalogue is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Returns a paginated list of free public-domain history books, memoirs, and primary sources from Gutenberg and Internet Archive Americana, sorted by popularity, with download links.

## Facts

- Endpoint: GET https://intel.rallylive.ca/list/history-books?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-history-books-catalogue-1af650cf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JXAe8bntgrJo2cm0p-o_U

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-history-books-catalogue-1af650cf
```

Example prompt: Show me the most popular free public-domain history books I can download — pull the first page of results from the catalogue.

## When to prefer this

Choose this endpoint when you need a curated, popularity-ranked list of free, legally downloadable public-domain history books with direct download links, especially when sourcing from Gutenberg or Internet Archive Americana. Prefer over a generic web search when you want structured catalogue data with reliable download URLs rather than scraped or unverified links.

## Known failure modes

- Payment not accepted or insufficient funds — endpoint requires $0.01 USDC per call via x402 protocol
- Invalid page parameter returns empty result set or error
- Upstream Gutenberg/Internet Archive data temporarily unavailable causing empty or stale results
- Rate limiting if too many requests are made in quick succession

## How this service works

Free history books: public-domain histories, memoirs and primary sources (Gutenberg, Internet Archive Americana) with download links, most popular first. $0.01 per page of 20.

## Output

A paginated list (20 items per page) of public-domain history books, memoirs, and primary sources, each with title, author, source (Gutenberg or Internet Archive Americana), download link, and popularity ranking, ordered from most to least popular.

## 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-history-books-catalogue-1af650cf/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)