# QueryLines E&S Insurers Ranking by State

> QueryLines E&S Insurers Ranking by State 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 the top U.S. excess & surplus (E&S) lines insurers ranked by premium for a given state and time period, sourced from state stamping office publications.

## Facts

- Endpoint: GET https://api.querylines.com/v1/insurers
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/querylines-e-s-insurers-ranking-by-state-38159235
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sGR5kid3fWlYhQhek_5Pd

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability querylines-e-s-insurers-ranking-by-state-38159235
```

Example prompt: Who are the top excess and surplus lines insurers in Florida for 2023, ranked by premium? Pull the data from state stamping office records.

## When to prefer this

Use this endpoint when you need a ranked list of E&S insurers by premium for a specific U.S. state and time period. Ideal for insurance market analysis, competitive intelligence on non-admitted carriers, or researching surplus lines market concentration. Prefer this over sibling endpoints when you need a point-in-time ranking rather than a time series or year-over-year comparison.

## Known failure modes

- Missing required 'state' or 'period' query parameters returns a validation error
- Invalid state code (not a recognized two-letter U.S. state abbreviation) returns an error
- Period format not matching YYYY or YYYY-MM pattern returns a validation error
- Data unavailable for a requested state/period combination returns an empty or error response
- Payment not processed (x402 protocol failure) results in a 402 Payment Required response

## How this service works

Top insurers by U.S. excess & surplus (E&S / surplus lines) insurance premium for a state and period (month or year), ranked by premium. Aggregated from state stamping office publications with source attribution. $0.10 per query. Docs: https://api.querylines.com/openapi.json

## Output

A ranked list of top U.S. E&S insurers for the specified state and period, including insurer names, premium amounts, rankings, and source attribution from state stamping office publications.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "state",
      "period"
     ],
     "properties": {
      "state": {
       "type": "string",
       "description": "Two-letter state code, e.g. FL"
      },
      "period": {
       "type": "string",
       "pattern": "^\\d{4}(-\\d{2})?$",
       "description": "Month (YYYY-MM) or year (YYYY)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "state": "FL",
  "period": "2026-06",
  "source": "FSLSO FL Monthly Premium Report, June 2026",
  "insurers": [
   {
    "name": "UNDERWRITERS AT LLOYD'S, LONDON",
    "rank": 1,
    "premium": 364780000,
    "policy_count": 45221
   },
   {
    "name": "MS TRANSVERSE SPECIALTY INSURANCE COMPANY",
    "rank": 2,
    "premium": 76410000,
    "policy_count": 10323
   },
   {
    "name": "LEXINGTON INSURANCE COMPANY",
    "rank": 3,
    "premium": 66690000,
    "policy_count": 1480
   }
  ],
  "data_as_of": "2026-06",
  "report_date": "2026-06-30"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/querylines-e-s-insurers-ranking-by-state-38159235/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.querylines.com](https://www.zero.xyz/host/api.querylines.com/llms.txt)