# Suverse Gutenberg Search

> Suverse Gutenberg Search is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.055/call, status unknown (last checked 2026-09-16).

Searches the Project Gutenberg free ebook catalog by author name or book title, returning matching books with metadata via Gutendex.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-gutenberg-search
- Price: $0.055/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-gutenberg-search-3203070b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_boWDexoDH7lMoaRxtHLhl

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 suverse-gutenberg-search-3203070b -d '<json body>'
```

Example prompt: Search the Project Gutenberg catalog for books by Jane Austen and show me the titles, languages, and download counts.

## When to prefer this

Choose this endpoint when you need to discover or look up public domain books from Project Gutenberg without an API key. It is ideal for reading-list generation, literature research, digital humanities datasets, or any workflow requiring free ebook metadata. Prefer it over scraping Gutenberg directly or integrating Gutendex yourself, as it provides a simple paid proxy with no authentication setup.

## Known failure modes

- No books found matching the search query — empty results list returned
- Invalid or missing body fields causing a 400 error
- Payment failure or insufficient USDC balance causing a 402 error
- Upstream Gutendex API unavailability causing a 503 or timeout
- Overly generic search terms returning many loosely related results

## How this service works

Search the Project Gutenberg free ebook catalog by author or title via Gutendex. Returns matching books with title, authors, languages and download_count. Keyless. Useful for public-domain book discovery and reading-list datasets.

## Output

Returns a list of matching books from the Project Gutenberg catalog, each with title, author names, available languages, and download count. The response mirrors the Gutendex API format.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "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/suverse-gutenberg-search-3203070b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)