x402 List

x402 Protocol Service Directory

●

QueryLines

Data PAYMENT-READY

payment-ready until 2026-08-20

Surplus lines market data, per query. U.S. excess & surplus (E&S) insurance premium and policy-count statistics from state stamping office publications: time series, YoY summaries, and cross-state comparison. $0.10 single-state query, $0.50 compare, USDC on Base via CDP facilitator. Free discovery endpoints (/v1/coverage, /v1/lines), no API keys. Also an MCP server at /mcp.

Pay from $0.10 to $0.50 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-07-09 · $9.29 all-time · settled via coinbase

BASE URL https://api.querylines.com │ WEBSITE https://querylines.com │ ENDPOINTS 3 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-12 │ MONITORED SINCE 2026-07-12

ASSESSMENT

updated 2h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%
uptime 24h
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
798ms
avg response
395ms
total checks
2,737

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.10 to $0.50 (p93 in Data)
price (min)
$0.10
price (max)
$0.50
category percentile (min)
p93 in Data
category percentile (max)
p91 in Data
endpoints / prices
3 / 2
model
tiered
stability
100%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
32d
registrar
Cloudflare, Inc.
hosting
custom
domain created
2026-07-09

Identity facts, not a risk score.

traction $6.09 30d · 8 buyers
volume 30d
$6.09
buyers 30d
8
settlements 30d
62
first settlement
2026-07-09
last settlement
2026-08-13
top buyer share
62% of 30d volume
trend 7d vs 30d
0.06x the 30d daily rate
networks
eip155:8453
volume all-time
$9.29
settlements all-time
78
median settlement 30d
$0.10
max settlement 30d
$0.50
settled via
coinbase ($6.09, 62 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

QueryLines provides U.S. excess & surplus insurance market statistics including premium, policy counts, and growth data by state, coverage line, and time period.

category
insurance-data
in
query params
insurancemarket-datastatisticspremiumpolicy-counts

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /v1/compare $0.50 Base USDC header
GET /v1/premium $0.10 Base USDC header
GET /v1/premium/summary $0.10 Base USDC header
3 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /v1/compare returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://api.querylines.com/v1/compare'
// 402 response (captured by monitor) · 3 payloads · click to expand 
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x16be07aec4d16e8ec9039d16e7049ee47834acd7",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.querylines.com/v1/premium",
      "tags": [
        "insurance",
        "surplus-lines",
        "excess-and-surplus",
        "market-data",
        "premium",
        "statistics"
      ],
      "mimeType": "application/json",
      "description": "U.S. excess & surplus (E&S / surplus lines) insurance premium and policy-count time series by state, coverage line, and month, quarter, or year. Aggregated from state stamping office publications; every response cites its source report. Florida, Texas, California, Illinois, Washington, and New York live -- TX history to 2009, CA monthly to 2017, NY annual only. $0.10 per query. Free discovery endpoints: /v1/coverage and /v1/lines. Docs: https://api.querylines.com/openapi.json",
      "serviceName": "QueryLines"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "to": "2026-06",
              "from": "2026-01",
              "line": "all",
              "state": "FL",
              "granularity": "month"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "data": [
                {
                  "period": "2026-06",
                  "premium": 1877013891,
                  "policy_count": 204624,
                  "renewal_premium": null,
                  "renewal_policy_pct": 59,
                  "new_business_premium": null,
                  "new_business_policy_pct": 41
                }
              ],
              "line": "all",
              "state": "FL",
              "county": null,
              "source": "FSLSO FL Monthly Premium Report, June 2026",
              "data_as_of": "2026-06",
              "granularity": "month",
              "report_date": "2026-06-30"
            }
          }
        },
        "schema": {
          "type": "object",
          "$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"
                  ],
                  "properties": {
                    "to": {
                      "type": "string",
                      "pattern": "^\\d{4}-\\d{2}$",
                      "description": "Month as YYYY-MM"
                    },
                    "from": {
                      "type": "string",
                      "pattern": "^\\d{4}-\\d{2}$",
                      "description": "Month as YYYY-MM"
                    },
                    "line": {
                      "type": "string",
                      "default": "all",
                      "description": "Coverage line name or source code; 'all' for statewide totals"
                    },
                    "state": {
                      "type": "string",
                      "description": "Two-letter state code, e.g. FL"
                    },
                    "county": {
                      "type": "string",
                      "description": "County name (annual county-level data only); omit for statewide totals"
                    },
                    "granularity": {
                      "enum": [
                        "month",
                        "quarter",
                        "half",
                        "year"
                      ],
                      "type": "string",
                      "default": "month"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x16be07aec4d16e8ec9039d16e7049ee47834acd7",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.querylines.com/v1/premium/summary",
      "tags": [
        "insurance",
        "surplus-lines",
        "excess-and-surplus",
        "market-data",
        "premium",
        "statistics"
      ],
      "mimeType": "application/json",
      "description": "Year-over-year summary of U.S. excess & surplus (E&S / surplus lines) insurance premium and policy counts for a state and year: totals, prior-year comparison, and YoY percent change. Aggregated from state stamping office publications with source attribution. $0.10 per query. Docs: https://api.querylines.com/openapi.json",
      "serviceName": "QueryLines"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "year": 2026,
              "state": "FL"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "year": 2025,
              "basis": "annual_report",
              "state": "FL",
              "source": "FSLSO FL Annual Report, 2025",
              "premium": 17331032536,
              "data_as_of": "2025",
              "prior_year": {
                "year": 2024,
                "premium": null,
                "policy_count": null,
                "months_available": 0
              },
              "report_date": "2026-04-09",
              "policy_count": 1706935,
              "renewal_premium": null,
              "yoy_premium_pct": null,
              "months_available": 3,
              "renewal_policy_pct": 58,
              "new_business_premium": null,
              "yoy_policy_count_pct": null,
              "new_business_policy_pct": 42
            }
          }
        },
        "schema": {
          "type": "object",
          "$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",
                    "year"
                  ],
                  "properties": {
                    "year": {
                      "type": "integer",
                      "description": "Calendar year, e.g. 2026"
                    },
                    "state": {
                      "type": "string",
                      "description": "Two-letter state code, e.g. FL"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x16be07aec4d16e8ec9039d16e7049ee47834acd7",
        "amount": "500000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.querylines.com/v1/compare",
      "tags": [
        "insurance",
        "surplus-lines",
        "excess-and-surplus",
        "market-data",
        "premium",
        "statistics"
      ],
      "mimeType": "application/json",
      "description": "Compare U.S. excess & surplus (E&S / surplus lines) insurance premium and policy-count series across multiple states side by side, on normalized cross-state coverage categories. Aggregated from state stamping office publications with source attribution. $0.50 per query. Docs: https://api.querylines.com/openapi.json",
      "serviceName": "QueryLines"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "from": "2026-01",
              "line": "all",
              "states": "FL,TX",
              "granularity": "month"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "line": "all",
              "series": {
                "FL": [
                  {
                    "period": "2026-06",
                    "premium": 1877013891,
                    "policy_count": 204624,
                    "renewal_premium": null,
                    "renewal_policy_pct": 59,
                    "new_business_premium": null,
                    "new_business_policy_pct": 41
                  }
                ],
                "TX": [
                  {
                    "period": "2026-06",
                    "premium": 1906883138,
                    "policy_count": 110412,
                    "renewal_premium": null,
                    "renewal_policy_pct": null,
                    "new_business_premium": null,
                    "new_business_policy_pct": null
                  }
                ]
              },
              "source": {
                "FL": "FSLSO FL Monthly Premium Report, June 2026",
                "TX": "SLTX Policy and Premium Report, June 2026"
              },
              "data_as_of": "2026-06",
              "granularity": "month",
              "report_date": "2026-06-30"
            }
          }
        },
        "schema": {
          "type": "object",
          "$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": [
                    "states"
                  ],
                  "properties": {
                    "to": {
                      "type": "string",
                      "pattern": "^\\d{4}-\\d{2}$",
                      "description": "Month as YYYY-MM"
                    },
                    "from": {
                      "type": "string",
                      "pattern": "^\\d{4}-\\d{2}$",
                      "description": "Month as YYYY-MM"
                    },
                    "line": {
                      "type": "string",
                      "default": "all",
                      "description": "Coverage line or normalized category; 'all' for totals"
                    },
                    "states": {
                      "type": "string",
                      "description": "Comma-separated two-letter state codes, e.g. FL,TX or FL,CA"
                    },
                    "granularity": {
                      "enum": [
                        "month",
                        "quarter",
                        "half",
                        "year"
                      ],
                      "type": "string",
                      "default": "month"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/querylines/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
07-15 · uptime 100.0% · 452ms avg07-16 · uptime 100.0% · 457ms avg07-17 · uptime 100.0% · 394ms avg07-18 · uptime 100.0% · 368ms avg07-19 · uptime 100.0% · 352ms avg07-20 · uptime 100.0% · 340ms avg07-21 · uptime 100.0% · 309ms avg07-22 · uptime 100.0% · 274ms avg07-23 · uptime 100.0% · 382ms avg07-24 · uptime 100.0% · 552ms avg07-25 · uptime 100.0% · 396ms avg07-26 · uptime 100.0% · 307ms avg07-27 · uptime 100.0% · 240ms avg07-28 · uptime 100.0% · 248ms avg07-29 · uptime 100.0% · 364ms avg07-30 · uptime 100.0% · 418ms avg07-31 · uptime 100.0% · 331ms avg08-01 · uptime 100.0% · 453ms avg08-02 · uptime 100.0% · 474ms avg08-03 · uptime 100.0% · 585ms avg08-04 · uptime 100.0% · 507ms avg08-05 · uptime 100.0% · 547ms avg08-06 · uptime 100.0% · 367ms avg08-07 · uptime 100.0% · 387ms avg08-08 · uptime 100.0% · 384ms avg08-09 · uptime 100.0% · 327ms avg08-10 · uptime 100.0% · 407ms avg08-11 · uptime 100.0% · 428ms avg08-12 · uptime 100.0% · 357ms avg08-13 · uptime 100.0% · 480ms avg07-1508-13
30d UPTIME 100%
RESPONSE TIME
07-15 · 452ms avg07-15 · 452ms avg07-16 · 457ms avg07-16 · 457ms avg07-17 · 394ms avg07-17 · 394ms avg07-18 · 368ms avg07-18 · 368ms avg07-19 · 352ms avg07-19 · 352ms avg07-20 · 340ms avg07-20 · 340ms avg07-21 · 309ms avg07-21 · 309ms avg07-22 · 274ms avg07-22 · 274ms avg07-23 · 382ms avg07-23 · 382ms avg07-24 · 552ms avg07-24 · 552ms avg07-25 · 396ms avg07-25 · 396ms avg07-26 · 307ms avg07-26 · 307ms avg07-27 · 240ms avg07-27 · 240ms avg07-28 · 248ms avg07-28 · 248ms avg07-29 · 364ms avg07-29 · 364ms avg07-30 · 418ms avg07-30 · 418ms avg07-31 · 331ms avg07-31 · 331ms avg08-01 · 453ms avg08-01 · 453ms avg08-02 · 474ms avg08-02 · 474ms avg08-03 · 585ms avg08-03 · 585ms avg08-04 · 507ms avg08-04 · 507ms avg08-05 · 547ms avg08-05 · 547ms avg08-06 · 367ms avg08-06 · 367ms avg08-07 · 387ms avg08-07 · 387ms avg08-08 · 384ms avg08-08 · 384ms avg08-09 · 327ms avg08-09 · 327ms avg08-10 · 407ms avg08-10 · 407ms avg08-11 · 428ms avg08-11 · 428ms avg08-12 · 357ms avg08-12 · 357ms avg08-13 · 480ms avg08-13 · 480ms avg07-1508-13
AVG RESP 396ms
PRICE (captured 402, USD)
07-14 · $0.1008-13 · $0.10$0.1007-1408-13

Median across 3 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
07-15 uptime: 100.0% compliance: 92% checks07-16 uptime: 100.0% compliance: 92% checks07-17 uptime: 100.0% compliance: 100% checks07-18 uptime: 100.0% compliance: 100% checks07-19 uptime: 100.0% compliance: 100% checks07-20 uptime: 100.0% compliance: 100% checks07-21 uptime: 100.0% compliance: 100% checks07-22 uptime: 100.0% compliance: 100% checks07-23 uptime: 100.0% compliance: 100% checks07-24 uptime: 100.0% compliance: 100% checks07-25 uptime: 100.0% compliance: 100% checks07-26 uptime: 100.0% compliance: 100% checks07-27 uptime: 100.0% compliance: 100% checks07-28 uptime: 100.0% compliance: 100% checks07-29 uptime: 100.0% compliance: 100% checks07-30 uptime: 100.0% compliance: 100% checks07-31 uptime: 100.0% compliance: 100% checks08-01 uptime: 100.0% compliance: 100% checks08-02 uptime: 100.0% compliance: 100% checks08-03 uptime: 100.0% compliance: 100% checks08-04 uptime: 100.0% compliance: 100% checks08-05 uptime: 100.0% compliance: 100% checks08-06 uptime: 100.0% compliance: 100% checks08-07 uptime: 100.0% compliance: 100% checks08-08 uptime: 100.0% compliance: 100% checks08-09 uptime: 100.0% compliance: 100% checks08-10 uptime: 100.0% compliance: 100% checks08-11 uptime: 100.0% compliance: 100% checks08-12 uptime: 100.0% compliance: 100% checks08-13 uptime: 100.0% compliance: 100% checksuptimecompliance07-1508-13

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)
price percentile in Data
site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
07-15 · $407-16 · $0.5007-18 · $0.4007-20 · $0.2807-23 · $0.3007-24 · $0.5007-27 · $0.1208-03 · $0.0108-10 · $0.0708-13 · $0.01peak $407-1508-13
DISTINCT BUYERS
07-15 · 2 buyers07-16 · 1 buyer07-18 · 1 buyer07-20 · 3 buyers07-23 · 1 buyer07-24 · 1 buyer07-27 · 3 buyers08-03 · 1 buyer08-10 · 2 buyers08-13 · 1 buyerpeak 3 buyers07-1508-13

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-07-13 · last up 2026-08-13

  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 516ms
● SLOW 717ms
● OK 353ms
● OK 405ms
● SLOW 692ms
● OK 312ms
● OK 310ms
● OK 374ms
● OK 528ms
● OK 423ms
● OK 254ms
● OK 486ms
● OK 342ms
● OK 299ms
● OK 326ms
● OK 294ms
● OK 332ms
● OK 250ms
18 of 2,746 checks · live count

EMBED THIS BADGE

Show that QueryLines is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

QueryLines listed on x402-list
status
QueryLines uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/querylines?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/querylines.svg" alt="QueryLines listed on x402-list" height="28">
</a>
// Markdown
[![QueryLines on x402-list](https://x402-list.com/badge/querylines.svg)](https://x402-list.com/services/querylines?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/querylines?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/querylines.svg?data=uptime" alt="QueryLines uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

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[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/querylines/update.