the402 endpoint detail

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api.querylines.com rates activity

https://api.querylines.com/v1/rates/activity

payable

The rate-activity index: admitted-market SERFF rate filings aggregated by state, coverage line, and period (month/quarter/year) -- filing_count, avg_rate_change_pct, share_increasing/share_decreasing, max_increase. Compare Texas vs Mississippi with states=TX,MS. Large admitted-market rate activity is a leading indicator of surplus-lines (E&S) growth. $0.10 per query. Free sample: /v1/rates/sample.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.10
Network
base
Pay to
0x16be07aec4d16e8ec9039d16e7049ee47834acd7
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
239 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:11:21.184Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.querylines.com%2Fv1%2Frates%2Factivity"