the402 endpoint detail

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netintel.dev currency-exchange history

https://netintel.dev/currency-exchange/history

answers 402

Daily historical exchange-rate series for any currency pair — fiat via ECB reference data, crypto via Coinbase daily closes — with min/max/average/change stats, no API key. Pass start/end dates or a days lookback (default 30). The history sibling of /currency-exchange/convert: trend and repricing context for the pairs agents already quote spot.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.02
Network
base
Pay to
0xdaDc335482AD545296Fd7b28518A251fFCbEb9Df
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
96 ms
Payment options
2 usable of 2
Last checked
2026-08-15T14:25:01.194Z (2d ago)
Category
data

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fnetintel.dev%2Fcurrency-exchange%2Fhistory"