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Strale ISBN Validator
x402
Strale ISBN Validator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-15).
Validates ISBN-10 or ISBN-13 numbers, checking format correctness and checksum integrity with a cryptographic audit record.
Price / call$0.0216
Success—
StatusUnknown
How this service works
The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.
Output
Returns a validation result indicating whether the submitted ISBN-10 or ISBN-13 is correctly formatted and passes its checksum, along with a cryptographic audit record that chains the call for traceability.
Example use cases
Book catalog data quality check
“I'm about to import a batch of books into our catalog — can you validate whether 978-0-306-40615-7 is a properly formatted and checksummed ISBN-13?”
E-commerce listing validation
“Before we publish this product listing, can you confirm that the ISBN 0-306-40615-2 is a valid ISBN-10 so we don't put bad data live?”
Library system ingestion pipeline
“We just received a book record with the identifier 978-1-86197-876-9 — can you verify it's a legitimate ISBN so the system can accept it?”
Technical details
Endpoint
GEThttps://api.strale.io/x402/v2/isbn-validateWhen to prefer
Choose this endpoint when you need a verifiable, auditable ISBN validation with a cryptographic chain record — particularly useful in publishing pipelines, compliance workflows, or multi-agent systems where tamper-evident audit trails are required. Prefer this over simple regex checks when you need a trusted, independently-tested validation result.
Side effects
- Missing 'isbn' query parameter returns a validation error
- Malformed ISBN string (wrong length, invalid characters) may return invalid result rather than an error
- Network or service downtime returns HTTP 5xx
- Invalid payment or insufficient USDC balance may block the request under x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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