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Coinslot Identifier Validator
x402
Coinslot Identifier Validator is a paid API for AI agents from coinslot.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-13).
Validates identifiers using real checksum algorithms: credit cards (Luhn + brand detection), IBANs (mod-97), EAN-13/UPC-A barcodes, ISBN-10/13, and UUIDs (with version detection)
Price / call$0.003
Success—
StatusUnknown
How this service works
Validate identifiers with real checksum math: credit card (Luhn + brand), IBAN (mod-97), EAN-13/UPC-A, ISBN-10/13, UUID (with version). POST { type, value } or { items: [{type, value}] } (max 50).
Output
Returns a validation result per identifier including whether it is valid, the checksum result, and where applicable: detected card brand (Visa, Mastercard, Amex, etc.), UUID version number, or ISBN type. For batch requests, returns one result object per input item in the same order.
Example use cases
Credit card pre-validation before payment
“Before I send this card number 4111111111111111 to my payment processor, can you verify it passes the Luhn checksum and tell me what card brand it is?”
Book ISBN integrity check
“I have a batch of ISBNs from a book catalog import — can you validate these for me: 978-3-16-148410-0, 0-306-40615-2, and 9780140449136? I need to know which ones have valid checksums.”
IBAN validation for bank transfer
“I'm about to send a wire transfer to DE89370400440532013000 — can you confirm that IBAN passes the mod-97 checksum before I submit it?”
Technical details
Endpoint
POSThttps://coinslot.dev/api/validate-ids?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need mathematically rigorous checksum validation for standard identifier formats (credit cards, IBANs, barcodes, ISBNs, UUIDs) rather than simple regex or format checks. It is ideal for pre-validating user input before downstream processing, catching typos in financial identifiers, or verifying data integrity in bulk catalog imports. Prefer this over generic regex validators when you need brand detection for cards or version detection for UUIDs.
Side effects
- Invalid type enum value — returns error if type is not one of card/iban/ean/isbn/uuid
- Batch exceeds 50 items — returns 400-level error
- Malformed request body — missing required type or value fields
- Value contains unexpected characters for the given type
- Payment failure via x402 — request blocked if USDC payment not provided
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| type | string | |
| items | array | |
| value | string |
Tags
x402
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