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Sindri Checksummed Identifier Generator
x402
Sindri Checksummed Identifier Generator is a paid API for AI agents from x402.outpimp.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Generates structurally valid checksummed identifiers (ISBN, UPC, VIN, IMEI) with real check-digit algorithms
Price / call$0.01
Success—
StatusUnknown
How this service works
Checksummed-identifier-format generator API. Generates a structurally valid isbn, upc, vin, or imei, each computed with its real check-digit algorithm. vin and imei take no arguments. Accepts optional locale (default en_US).
Output
Returns a structurally valid checksummed identifier string (e.g. an ISBN-13, 12-digit UPC, 17-character VIN, or 15-digit IMEI) computed using the real check-digit algorithm for that format. The output passes standard validation checks for the chosen identifier type.
Example use cases
Test data for e-commerce catalog
“Generate a valid UPC code I can use as test data for my product catalog — needs to be structurally correct with a real check digit.”
Fake VIN for automotive app testing
“Can you generate a valid VIN number for me? I need a realistic vehicle identification number to test my automotive app.”
Mock IMEI for mobile device testing
“I need a valid IMEI number to use in my mobile device registration test suite — generate one with the correct check digit.”
Technical details
Endpoint
POSThttps://x402.outpimp.com/generateChecksumFormatWhen to prefer
Choose this endpoint when you need a single, structurally valid checksummed identifier (ISBN, UPC, VIN, or IMEI) with a correctly computed check digit — ideal for test data generation, mocking, QA pipelines, or any scenario requiring a realistic-looking but synthetic identifier. Prefer this over hand-rolling check digit logic or using random strings that fail validation.
Side effects
- Invalid field enum value returns an error
- Unsupported locale may fall back to en_US or error
- Passing args to vin or imei (which accept no arguments) may be ignored or cause an error
- Payment failure (402) if USDC balance is insufficient
- Network timeout on rare occasions
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| args | object | Method-specific options, e.g. {"variant":13} for isbn. Not accepted for vin/imei. |
| field | string | Which checksummed identifier format to generate. |
| locale | string | Locale code, e.g. "en_US", "de". |
Tags
x402
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