the402 endpoint detail

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api.24klabs.ai v1 bond-price-yield

https://api.24klabs.ai/api/v1/bond-price-yield

payable

Clean price or yield-to-maturity plus current yield, Macaulay and modified duration and convexity from coupon, face, maturity and coupon frequency.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.004
Network
base
Pay to
0xe73D86f185bE79a33b0318d881B71f2a24371114
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
43 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:15:17.265Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.24klabs.ai%2Fapi%2Fv1%2Fbond-price-yield"