x402 price index · endpoint

POST https://hcrb.in/v1/tools/china-supplier-check/call · tool china-supplier-check · source self · id fa59a59029976369

current quote
0.02 USDC declared observed 2026-09-15T18:05:17.000Z
percentile
P96 of 197 indexed USDC quotes (share quoting at or below this one; P0 = cheapest)
inflation flag
no (latest quote ≤ 1.5× the 30-day median)
7-day
0.02 USDC / 0.02 USDC / 0.02 USDC min / median / max · 1 obs · change 0.0%
30-day
0.02 USDC / 0.02 USDC / 0.02 USDC min / median / max · 1 obs · change 0.0%
first / last seen
2026-09-15T18:05:16.000Z / 2026-09-15T18:05:16.000Z

Embed the badge

The badge is served from this index with a 1-hour cache and reads "unknown" whenever there is no data. It links back here so anyone can see the history behind the number.

x402 quoted price badge

[![x402 price](https://index.code402.dev/badge/fa59a59029976369.svg)](https://index.code402.dev/e/fa59a59029976369)
<a href="https://index.code402.dev/e/fa59a59029976369"><img src="https://index.code402.dev/badge/fa59a59029976369.svg" alt="x402 quoted price for https://hcrb.in/v1/tools/china-supplier-check/call"></a>

Verify a receipt

Paste the XDR-1 receipt JSON a paid call returned (the X-Receipt header, base64-decoded, or the receipt object inside it). The signer is recovered offline and compared with the signer https://hcrb.in publishes in /.well-known/x402.json. Nothing is sent anywhere else.

Price history (last 1 observations, 30 days)

observedquotedassetchainpay tokind
2026-09-15T18:05:17.000Z0.02 USDC0x833589fCD6eDb6E08f4c7C32D4f71b54bdA0291384530xc59c85e661d34084a7769f955d17fd38254a6235declared

Raw JSON: /v1/history · /v1/price