# free-books-1820s

> free-books-1820s is a paid API for AI agents from library.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Returns a paginated list of public-domain books first published in the 1820s (1820–1829), ordered by most downloaded, with download links from Internet Archive and Project Gutenberg.

## Facts

- Endpoint: GET https://library.intel.rallylive.ca/library/books/1820s?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-books-1820s-81064ff6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KCuhQRdXlynJj2OT-AEp9

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-1820s-81064ff6
```

Example prompt: Can you pull up a list of free public-domain books published in the 1820s, sorted by most downloaded, with links to read or download them?

## When to prefer this

Use this endpoint when you specifically need books published in the 1820s decade, want popularity-ranked results, and need direct download links. Prefer it over general book-search APIs when the decade constraint (1820–1829) is the primary filter and cost-per-page micropayment access is acceptable.

## Known failure modes

- No results on a given page if catalogue is exhausted
- Network timeout if upstream library catalogue is slow
- Payment failure if x402 micropayment of $0.01 USDC is not completed
- Malformed response if upstream Internet Archive or Gutenberg data is inconsistent

## How this service works

Free books first published in the 1820s: public-domain works dated 1820-1829 in the catalogue (Internet Archive scans and dated Gutenberg editions), most downloaded first, with download links. Period reading and historical research. $0.01 per page of 20.

## Output

A paginated list (20 items per page) of public-domain books first published between 1820 and 1829, sorted by download popularity, including title, author, publication date, and download links pointing to Internet Archive scans or dated Project Gutenberg editions.

## 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-1820s-81064ff6/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)