ExchangeRebel Book Metadata API
The Book Metadata API from ExchangeRebel — 7 operation(s) for book metadata.
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curl "https://apis.io/api/v1/apis/exchangerebel-com:exchangerebel-com-book-metadata-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: ExchangeRebel — pay-per-call APIs for AI agents (x402 on…
version: 1.0.0
contact:
name: 'ExchangeRebel (operator: Rebel Data)'
url: https://exchangerebel.com
email: sound.money.investing@gmail.com
x-guidance: 'All paid operations use x402 on Solana: call without payment to get a 402 challenge (SOL recipient + USDC token account + fresh memo), pay with the memo attached via the Solana Memo program, then retry with header X-Payment-Tx: <signature> and ?toll_memo=<memo>. Challenges are dual-version: the PAYMENT-REQUIRED header carries the x402 v2 PaymentRequired object and the response body carries the same challenge in x402 v1 form for compatibility. Free operations (security: []) include each service''s /health catalog with full response shapes. Prices in x-payment-info are USD per call unless the summary says otherwise (RPC is per 1,000-request block; Telegram provisioning is per bot-month; transcription is per minute of audio).'
description: '67 data and utility APIs behind x402 tolls, settled in SOL or USDC on Solana. Call a paid endpoint without payment to receive a 402 x402 challenge (recipient + fresh memo), pay with the memo attached via the Solana Memo program, then retry with the X-Payment-Tx header and toll_memo query parameter. Free catalog/health endpoints are marked without x-payment-info. Full catalogs: GET /toll/discovery and each service''s /health.'
servers:
- url: https://exchangerebel.com
tags:
- name: Book Metadata
paths:
/toll/books/isbn/{isbn}:
get:
tags:
- Book Metadata
summary: Book metadata by ISBN (Open Library, metadata only)
responses:
'200':
description: Success. Response shape is documented in the service catalog (GET /health on the service).
content:
application/json:
example:
isbn: '9780134685991'
edition:
key: /books/OL31838212M
title: Effective Java
edition_name: 3rd Edition
publishers:
- Addison-Wesley Professional
publish_date: December 27, 2017
number_of_pages: 416
physical_format: Paperback
isbn_10:
- 0134685997
isbn_13:
- '9780134685991'
languages:
- eng
authors:
- key: /authors/OL341293A
work_key: /works/OL6223299W
cover:
small: https://covers.openlibrary.org/b/id/12420356-S.jpg
medium: https://covers.openlibrary.org/b/id/12420356-M.jpg
large: https://covers.openlibrary.org/b/id/12420356-L.jpg
openlibrary_url: https://openlibrary.org/books/OL31838212M
source: Open Library
attribution: Open Library
cached: false
envelope:
v: 1
service: book-metadata
as_of: '2026-10-12T00:00:00Z'
source: Open Library
grade: primary
capture_cadence: 24h
changes:
supported: false
'402':
description: 'Payment Required (x402). The PAYMENT-REQUIRED response header carries the x402 v2 PaymentRequired object (base64 JSON: scheme, CAIP-2 network, amount, asset, payTo, plus the bazaar discovery extension); the response body carries the same challenge in x402 v1 form for compatibility, naming the SOL recipient and USDC token account on Solana plus a fresh memo. To pay on this service''s rail: pay with the memo attached (Solana Memo program), then retry with header ''X-Payment-Tx: <transaction signature>'' and query parameter ''toll_memo=<memo>''.'
parameters:
- name: isbn
in: path
required: true
schema:
type: string
description: ISBN-10 or ISBN-13 (hyphens allowed)
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
security:
- x402Payment: []
operationId: getTollBooksIsbnByIsbn
x-operation-id-source: derived
/toll/books/search:
get:
tags:
- Book Metadata
summary: Search books (Open Library, metadata only)
responses:
'200':
description: Success. Response shape is documented in the service catalog (GET /health on the service).
content:
application/json:
example:
query:
q: the lord of the rings
title: null
author: null
count: 1106
results:
- work_key: /works/OL27448W
title: The Lord of the Rings
authors:
- key: /authors/OL26320A
name: J. R. R. Tolkien
first_publish_year: 1954
edition_count: 253
publishers:
- Houghton Mifflin
- HarperCollins
isbns:
- '9780618260584'
- 0618260595
isbn_count: 2
number_of_pages_median: 1178
languages:
- eng
- spa
subjects:
- Fantasy
- Middle Earth
cover:
small: https://covers.openlibrary.org/b/id/14625765-S.jpg
medium: https://covers.openlibrary.org/b/id/14625765-M.jpg
large: https://covers.openlibrary.org/b/id/14625765-L.jpg
- work_key: /works/OL1W
title: Minimal Doc
authors: []
first_publish_year: null
edition_count: 0
publishers: []
isbns: []
isbn_count: 0
number_of_pages_median: null
languages: []
subjects: []
cover: null
source: Open Library
attribution: Open Library
cached: false
envelope:
v: 1
service: book-metadata
as_of: '2026-10-12T00:00:00Z'
source: Open Library
grade: primary
capture_cadence: 24h
changes:
supported: false
'402':
description: 'Payment Required (x402). The PAYMENT-REQUIRED response header carries the x402 v2 PaymentRequired object (base64 JSON: scheme, CAIP-2 network, amount, asset, payTo, plus the bazaar discovery extension); the response body carries the same challenge in x402 v1 form for compatibility, naming the SOL recipient and USDC token account on Solana plus a fresh memo. To pay on this service''s rail: pay with the memo attached (Solana Memo program), then retry with header ''X-Payment-Tx: <transaction signature>'' and query parameter ''toll_memo=<memo>''.'
parameters:
- name: q
in: query
required: false
schema:
type: string
description: General query
- name: title
in: query
required: false
schema:
type: string
description: Title terms
- name: author
in: query
required: false
schema:
type: string
description: Author terms
- name: limit
in: query
required: false
schema:
type: string
description: 1-25, default 10
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
security:
- x402Payment: []
operationId: getTollBooksSearch
x-operation-id-source: derived
/toll/books/title/{title}:
get:
tags:
- Book Metadata
summary: Book metadata by title (Open Library)
responses:
'200':
description: Success. Response shape is documented in the service catalog (GET /health on the service).
content:
application/json:
example:
query:
title: Dune
count: 1106
results:
- work_key: /works/OL27448W
title: The Lord of the Rings
authors:
- key: /authors/OL26320A
name: J. R. R. Tolkien
first_publish_year: 1954
edition_count: 253
publishers:
- Houghton Mifflin
- HarperCollins
isbns:
- '9780618260584'
- 0618260595
isbn_count: 2
number_of_pages_median: 1178
languages:
- eng
- spa
subjects:
- Fantasy
- Middle Earth
cover:
small: https://covers.openlibrary.org/b/id/14625765-S.jpg
medium: https://covers.openlibrary.org/b/id/14625765-M.jpg
large: https://covers.openlibrary.org/b/id/14625765-L.jpg
- work_key: /works/OL1W
title: Minimal Doc
authors: []
first_publish_year: null
edition_count: 0
publishers: []
isbns: []
isbn_count: 0
number_of_pages_median: null
languages: []
subjects: []
cover: null
source: Open Library
attribution: Open Library
cached: false
envelope:
v: 1
service: book-metadata
as_of: '2026-10-12T00:00:00Z'
source: Open Library
grade: primary
capture_cadence: 24h
changes:
supported: false
'402':
description: 'Payment Required (x402). The PAYMENT-REQUIRED response header carries the x402 v2 PaymentRequired object (base64 JSON: scheme, CAIP-2 network, amount, asset, payTo, plus the bazaar discovery extension); the response body carries the same challenge in x402 v1 form for compatibility, naming the SOL recipient and USDC token account on Solana plus a fresh memo. To pay on this service''s rail: pay with the memo attached (Solana Memo program), then retry with header ''X-Payment-Tx: <transaction signature>'' and query parameter ''toll_memo=<memo>''.'
parameters:
- name: title
in: path
required: true
schema:
type: string
description: Book title
- name: limit
in: query
required: false
schema:
type: string
description: 1-25, default 5
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
security:
- x402Payment: []
operationId: getTollBooksTitleByTitle
x-operation-id-source: derived
/toll/books/works/{id}:
get:
tags:
- Book Metadata
summary: Work metadata by Open Library work id
responses:
'200':
description: Success. Response shape is documented in the service catalog (GET /health on the service).
content:
application/json:
example:
work:
key: /works/OL27448W
title: The Lord of the Rings
authors:
- key: /authors/OL26320A
subjects:
- Fantasy
- Quest
- Good and evil
first_publish_date: '1954'
cover:
small: https://covers.openlibrary.org/b/id/14625765-S.jpg
medium: https://covers.openlibrary.org/b/id/14625765-M.jpg
large: https://covers.openlibrary.org/b/id/14625765-L.jpg
openlibrary_url: https://openlibrary.org/works/OL27448W
source: Open Library
attribution: Open Library
cached: false
envelope:
v: 1
service: book-metadata
as_of: '2026-10-12T00:00:00Z'
source: Open Library
grade: primary
capture_cadence: 24h
changes:
supported: false
'402':
description: 'Payment Required (x402). The PAYMENT-REQUIRED response header carries the x402 v2 PaymentRequired object (base64 JSON: scheme, CAIP-2 network, amount, asset, payTo, plus the bazaar discovery extension); the response body carries the same challenge in x402 v1 form for compatibility, naming the SOL recipient and USDC token account on Solana plus a fresh memo. To pay on this service''s rail: pay with the memo attached (Solana Memo program), then retry with header ''X-Payment-Tx: <transaction signature>'' and query parameter ''toll_memo=<memo>''.'
parameters:
- name: id
in: path
required: true
schema:
type: string
description: Work id (OL...W)
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
security:
- x402Payment: []
operationId: getTollBooksWorksById
x-operation-id-source: derived
/toll/books/author/{id}:
get:
tags:
- Book Metadata
summary: Author metadata by Open Library author id
responses:
'200':
description: Success. Response shape is documented in the service catalog (GET /health on the service).
content:
application/json:
example:
author:
key: /authors/OL26320A
name: J. R. R. Tolkien
personal_name: J. R. R. Tolkien
birth_date: 3 January 1892
death_date: 2 September 1973
alternate_names:
- John Ronald Reuel Tolkien
- Tolkien
work_count: 522
openlibrary_url: https://openlibrary.org/authors/OL26320A
source: Open Library
attribution: Open Library
cached: false
envelope:
v: 1
service: book-metadata
as_of: '2026-10-12T00:00:00Z'
source: Open Library
grade: primary
capture_cadence: 24h
changes:
supported: false
'402':
description: 'Payment Required (x402). The PAYMENT-REQUIRED response header carries the x402 v2 PaymentRequired object (base64 JSON: scheme, CAIP-2 network, amount, asset, payTo, plus the bazaar discovery extension); the response body carries the same challenge in x402 v1 form for compatibility, naming the SOL recipient and USDC token account on Solana plus a fresh memo. To pay on this service''s rail: pay with the memo attached (Solana Memo program), then retry with header ''X-Payment-Tx: <transaction signature>'' and query parameter ''toll_memo=<memo>''.'
parameters:
- name: id
in: path
required: true
schema:
type: string
description: Author id (OL...A)
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
security:
- x402Payment: []
operationId: getTollBooksAuthorById
x-operation-id-source: derived
/toll/books/authors:
get:
tags:
- Book Metadata
summary: Search authors (Open Library)
responses:
'200':
description: Success. Response shape is documented in the service catalog (GET /health on the service).
content:
application/json:
example:
query:
q: tolkien
count: 12
results:
- key: /authors/OL26320A
name: J. R. R. Tolkien
birth_date: 3 January 1892
death_date: 2 September 1973
top_work: The Lord of the Rings
work_count: 522
alternate_names:
- John Ronald Reuel Tolkien
source: Open Library
attribution: Open Library
cached: false
envelope:
v: 1
service: book-metadata
as_of: '2026-10-12T00:00:00Z'
source: Open Library
grade: primary
capture_cadence: 24h
changes:
supported: false
'402':
description: 'Payment Required (x402). The PAYMENT-REQUIRED response header carries the x402 v2 PaymentRequired object (base64 JSON: scheme, CAIP-2 network, amount, asset, payTo, plus the bazaar discovery extension); the response body carries the same challenge in x402 v1 form for compatibility, naming the SOL recipient and USDC token account on Solana plus a fresh memo. To pay on this service''s rail: pay with the memo attached (Solana Memo program), then retry with header ''X-Payment-Tx: <transaction signature>'' and query parameter ''toll_memo=<memo>''.'
parameters:
- name: q
in: query
required: true
schema:
type: string
description: Author name query
- name: limit
in: query
required: false
schema:
type: string
description: 1-25, default 10
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
security:
- x402Payment: []
operationId: getTollBooksAuthors
x-operation-id-source: derived
/toll/books/health:
get:
tags:
- Book Metadata
summary: Check the book metadata service status
responses:
'200':
description: Success. Response shape is documented in the service catalog (GET /health on the service).
security: []
operationId: getTollBooksHealth
x-operation-id-source: derived
components:
securitySchemes:
x402Payment:
type: apiKey
in: header
name: X-Payment-Tx
description: 'x402 toll payment proof: the Solana transaction signature of a payment carrying the memo from the 402 challenge; send together with ?toll_memo=<memo>. Payment itself is made on-chain in SOL or USDC to the recipient named in the challenge.'