# Saylor Innovations Public-Domain Book Search

> Saylor Innovations Public-Domain Book Search is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Search 75,000+ public-domain books on Project Gutenberg by title or author, returning book ID, title, author, download count, and a link to the full text.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/gutenberg/search?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-public-domain-book-search-85551313
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fq_JixX8Rg1v2-9P31AU3

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 saylor-innovations-public-domain-book-search-85551313
```

Example prompt: Search Project Gutenberg for books by Jane Austen and show me the titles, download counts, and links to the full text.

## When to prefer this

Use this endpoint when you need to search the Project Gutenberg catalog of 75,000+ public-domain books by title or author, especially when you need book IDs to subsequently fetch full text. Prefer it over generic web search when you want structured bibliographic data (ID, author, title, download count) directly from the Gutenberg corpus.

## Known failure modes

- No books found for the given query — returns an empty books array
- Missing or empty 'q' parameter may return an error or empty results
- Query too broad may return a large or truncated list
- Project Gutenberg data may occasionally be incomplete for older or obscure titles

## How this service works

Public-Domain Book Search (Project Gutenberg, 75k+ books). Search 75,000+ public-domain books on Project Gutenberg by title or author: book id, title, author, download count and a link to the full-text endpoint.

## Output

Returns a JSON object containing a list of books matching the query, where each book includes its Gutenberg book ID, title, author, download count, and a link to the full-text endpoint for that book.

## 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",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "q": {
       "type": "string",
       "description": "title or author (query)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "books"
     ],
     "properties": {
      "books": {
       "type": "array",
       "items": {
        "type": "object"
       }
      },
      "query": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-public-domain-book-search-85551313/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)