x402 price index · endpoint

POST https://code402.dev/v1/tools/fx-spot-price-oracle/call · tool fx-spot-price-oracle · source self · id 7be7856006da3a0c

current quote: 0.002 USDC declared observed 2026-09-12T06:07:37.000Z
percentile: P61 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: 0.002 USDC / 0.002 USDC / 0.002 USDC min / median / max · 14 obs · change 0.0%
30-day: 0.002 USDC / 0.002 USDC / 0.002 USDC min / median / max · 23 obs · change 0.0%
first / last seen: 2026-09-05T18:06:00.000Z / 2026-09-12T06:07:37.000Z

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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 price](https://index.code402.dev/badge/7be7856006da3a0c.svg)](https://index.code402.dev/e/7be7856006da3a0c)

<a href="https://index.code402.dev/e/7be7856006da3a0c"><img src="https://index.code402.dev/badge/7be7856006da3a0c.svg" alt="x402 quoted price for https://code402.dev/v1/tools/fx-spot-price-oracle/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://code402.dev publishes in /.well-known/x402.json. Nothing is sent anywhere else.

Price history (last 23 observations, 30 days)

observed	quoted	asset	chain	pay to	kind
2026-09-12T06:07:37.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-12T00:06:50.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-11T18:06:40.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-11T12:08:02.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-11T06:07:32.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-11T00:07:14.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-10T18:06:33.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-10T12:06:33.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-10T06:06:44.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-10T00:06:33.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-09T18:06:04.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-09T12:06:04.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-09T06:05:49.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-09T00:06:01.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-08T18:06:00.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-08T12:05:50.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-08T06:05:50.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-08T00:05:38.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-07T18:05:38.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-06T12:05:38.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-06T06:06:22.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-06T00:05:59.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared
2026-09-05T18:06:00.000Z	0.002 USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	8453	0xc59c85e661d34084a7769f955d17fd38254a6235	declared

Raw JSON: /v1/history · /v1/price