# Suverse OpenLibrary ISBN Lookup

> Suverse OpenLibrary ISBN Lookup is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-16).

Resolves an ISBN to book metadata (title, authors, publisher, publish date, page count) via Open Library, requiring no API key.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-openlibrary-isbn
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-openlibrary-isbn-lookup-dabad35c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rf8RAbIaMuxUg3_SdmKRU

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-openlibrary-isbn-lookup-dabad35c -d '<json body>'
```

Example prompt: Can you look up the book with ISBN 978-0-7432-7356-5 and tell me the title, author, publisher, and how many pages it has?

## When to prefer this

Choose this endpoint when you need to resolve an ISBN to basic bibliographic metadata quickly and without managing an API key. It is ideal for enriching datasets, validating book records, or powering agent workflows that encounter ISBNs in the wild. Prefer it over raw Open Library API calls when you want a simple, paid-per-use proxy with no authentication overhead.

## Known failure modes

- ISBN not found in Open Library — returns empty or error response
- Malformed ISBN input — may return no results or an error
- Open Library upstream outage — endpoint returns degraded or error response
- ISBN exists but Open Library record is incomplete — some fields (e.g. page count) may be null or missing

## How this service works

Look up a book by ISBN from Open Library, no key. Returns title, authors, publisher, publish date, and page count. For AI agents resolving ISBNs to book metadata.

## Output

Returns structured book metadata including title, list of authors, publisher name, publication date, and total page count sourced from the Open Library database.

## 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-openlibrary-isbn-lookup-dabad35c/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)