# free-books-china

> free-books-china 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 ranked, paginated catalogue of free public-domain books tagged with the Library of Congress 'China' subject, with download links, drawn from Project Gutenberg and Internet Archive.

## Facts

- Endpoint: GET https://intel.rallylive.ca/library/subject/china
- 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-china-a785effd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NhLEcjBosMDcJLL21H9Cp

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-china-a785effd
```

Example prompt: Can you find me free public-domain books about China — specifically ones by Pearl Buck if possible — and give me their epub download links?

## When to prefer this

Choose this endpoint when you need a curated, ranked, and regularly verified catalogue of free public-domain books specifically about China, with ready-to-use epub/txt/html download links, rather than scraping Project Gutenberg or Internet Archive directly. It is ideal when you want relevance and popularity ranking, keyword filtering by title or author, and a stable paginated API rather than raw search results.

## Known failure modes

- No results returned if keyword filter is too narrow or misspelled
- Pagination out of range returns empty page
- Occasional broken download links for rare Internet Archive scans
- Service unavailable if upstream catalogue is temporarily unreachable
- Payment failure if USDC balance is insufficient for the $0.01 per call fee

## How this service works

Free public-domain books on "China": browse the catalogue's works tagged with that Library of Congress subject (334 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 paginated list of up to 20 public-domain books per page tagged with the Library of Congress 'China' subject, including title, author, relevance and popularity ranking, and direct download links in epub, txt, and html formats. Results are drawn from Project Gutenberg (334+ titles) and Internet Archive scans, 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-books-china-a785effd/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)