Endpoint · computePOSTcheckdigit.openverbs.com /v1/isbn
Validate an ISBN-10 (mod-11, trailing X allowed) or ISBN-13 (GTIN mod-10) book number.
Read more
Validate an ISBN-10 (mod-11, trailing X allowed) or ISBN-13 (GTIN mod-10) book number. Length after removing spaces/hyphens selects the scheme.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.002 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://checkdigit.openverbs.com/v1/isbn
Seen
first 28 days ago · last 18 hr ago
52 free handshakes
Payment
Pays through
x402 · MPP evm, tempo
Offered on?
Base USDC, Tempo 0x8335…2913
Listed on?
Base
Buy it through Teppi
- ?Pay on delivery
- 0.004000 USDC (0.002000 to the seller, 0.002000 fee)
- Where
- https://api.teppi.xyz/v1/via/cap_01M1TKXTH085G53M9VP9Y4CBT8
- ?Ask the price
curl -si -X POST https://api.teppi.xyz/v1/via/cap_01M1TKXTH085G53M9VP9Y4CBT8 -H 'content-type: application/json' -d '{}'
About
- ?Description
- Validate an ISBN-10 (mod-11, trailing X allowed) or ISBN-13 (GTIN mod-10) book number. Length after removing spaces/hyphens selects the scheme.
- URL
- https://checkdigit.openverbs.com/v1/isbn
- Method
- POST
- Class
- compute
- ?Checkable to
- L1
- Endpoint id
- cap_01M1TKXTH085G53M9VP9Y4CBT8
- ?Badge
Reads live. UNRATED until paid calls earn a letter.
- Markdown
- [](https://teppi.xyz/endpoint/cap_01M1TKXTH085G53M9VP9Y4CBT8)
- HTML
- <a href="https://teppi.xyz/endpoint/cap_01M1TKXTH085G53M9VP9Y4CBT8"><img src="https://api.teppi.xyz/badge/cap_01M1TKXTH085G53M9VP9Y4CBT8.svg" alt="Teppi delivery record"></a>
- Image
- https://api.teppi.xyz/badge/cap_01M1TKXTH085G53M9VP9Y4CBT8.svg
Verify it yourself
npx teppi-check https://checkdigit.openverbs.com/v1/isbncurl -s https://api.teppi.xyz/v1/trust/cap_01M1TKXTH085G53M9VP9Y4CBT8