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QueryLines SERFF Admitted-Market Rate Activity Index
x402
QueryLines SERFF Admitted-Market Rate Activity Index is a paid API for AI agents from api.querylines.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Returns aggregated admitted-market insurance rate filing activity (filing count, avg rate change %, share increasing/decreasing, max increase) by state, coverage line, and time period from SERFF data
Price / call$0.1
Success—
StatusUnknown
How this service works
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. Docs: https://api.querylines.com/openapi.json
Output
A time-series of rate activity records bucketed by the chosen granularity (month/quarter/year), each containing: state, coverage line, filing_count, avg_rate_change_pct, share_increasing, share_decreasing, and max_increase — enabling cross-state and cross-period comparisons of admitted-market pricing pressure.
Example use cases
Example prompt
“Pull me quarterly admitted-market SERFF rate activity for homeowners insurance in Texas and Mississippi from 2022-01 to 2023-12 — I want to see filing counts, average rate change, and the share of filings that are increases vs decreases.”
Technical details
Endpoint
GEThttps://api.querylines.com/v1/rates/activityWhen to prefer
Use this endpoint when you need aggregated admitted-market rate filing trends across multiple states or time periods, especially to benchmark pricing pressure, identify hardening markets, or use admitted-market activity as a leading indicator for E&S/surplus-lines growth. Prefer this over raw filing lookups when you want summary statistics (averages, share increasing/decreasing) rather than individual filings.
Side effects
- Unknown state code returns empty results or validation error
- Date range outside available data returns empty array
- Invalid granularity enum value returns 400 error
- Payment not provided or insufficient — 402 Payment Required
- Line substring matches no known coverage category — returns empty results
- Malformed from/to date format (not YYYY-MM) returns 400
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"line": "property",
"count": 2,
"source": "Texas Department of Insurance - P&C Rate Filings (open data)",
"states": [
"TX"
],
"activity": [
{
"line": "property",
"state": "TX",
"period": "2026-Q1",
"source": "Texas Department of Insurance - P&C Rate Filings (open data)",
"filing_count": 6,
"max_increase": 22.5,
"filings_with_pct": 5,
"share_decreasing": 0.2,
"share_increasing": 0.8,
"avg_rate_change_pct": 9.4
},
{
"line": "property",
"state": "TX",
"period": "2026-Q2",
"source": "Texas Department of Insurance - P&C Rate Filings (open data)",
"filing_count": 8,
"max_increase": 24.8,
"filings_with_pct": 7,
"share_decreasing": 0.143,
"share_increasing": 0.857,
"avg_rate_change_pct": 14.1
}
],
"data_as_of": "2026-Q2",
"granularity": "quarter",
"report_date": "2026-07-01",
"coverage_note": "Admitted-market rate filings, not E&S filings -- a leading indicator (surplus-lines carriers are rate-exempt). Texas rows carry a received_date; Mississippi's bulletin prints no received_date, so /v1/rates/activity buckets MS filings by the bulletin's publication month instead. rate_change_pct is null for filings with no printed percentage."
}
}Tags
x402
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