{"uid":"cap_0wcFmKhzCTBThGSIdiXJm","slug":"querylines-serff-admitted-market-rate-activity-index-a6e3bbb3","name":"QueryLines SERFF Admitted-Market Rate Activity Index","description":"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. $0.10 per query. Free sample: /v1/rates/sample. Docs: https://api.querylines.com/openapi.json","url":"https://api.querylines.com/v1/rates/activity","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"to":{"type":"string","description":"YYYY-MM"},"from":{"type":"string","description":"YYYY-MM"},"line":{"type":"string","description":"coverage category or TOI name substring"},"states":{"type":"string","description":"CSV of 2-letter codes; default all"},"granularity":{"enum":["month","quarter","year"],"type":"string","default":"quarter"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"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."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yS9_HuBN7YO06ExpQ-Ipx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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","exampleAgentPrompt":"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.","exampleUseCases":null,"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:42:53.138Z","isFirstParty":false}