Index onlineMerchant portal
Api Endpoint

Flood Zone Lookup

Determine the FEMA flood zone for a coordinate. Pass lat and lon. Returns the FEMA flood zone code (e.g. AE, VE, X), its subtype, whether the point is in a Special Flood Hazard Area (isSFHA — the 1% annual-chance floodplain where flood insurance is mandatory for federally backed mortgages), a plain-language risk level (high / moderate / minimal / undetermined / unmapped) and description, the static base flood elevation and depth when published, and the source FIRM panel id. Data: FEMA National Flood Hazard Layer (NFHL), free and public-domain. When no flood polygon intersects the point, returns mapped=false (usually Zone X / minimal risk or unmapped — not a guarantee of zero risk). Use for property risk screening, insurance/mortgage context, and siting decisions; geocode an address with /api/geocode/address first to get the coordinate.

Open interactive test console

Offering

Provider
2s.io
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Weather And Environment
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://2s.io/api/geo/flood-zone
MIME type
application/json
First seen
2026-10-16T02:00:03.055Z
Last seen
Tags
public-records, identifiers, AI-agents, us-gov-data, X402, upto-billing, ai-gateway, agent-infrastructure

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.0036 USDC
Atomic price: 3600 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.0036 USDC
Atomic price: 3600 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "3600",
    "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "3600",
    "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn"
  }
]

Observed health

Status
Healthy
Latest latency
98 ms
Average latency
486 ms
HTTP status
402
Last checked
Reachability
100% over 10 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "const": "http"
    },
    "method": {
      "const": "GET"
    },
    "queryParams": {
      "properties": {
        "lat": {
          "type": "number",
          "minimum": -90,
          "maximum": 90,
          "description": "Latitude (WGS84)."
        },
        "lon": {
          "type": "number",
          "minimum": -180,
          "maximum": 180,
          "description": "Longitude (WGS84)."
        }
      },
      "required": [
        "lat",
        "lon"
      ]
    }
  },
  "required": [
    "type",
    "method",
    "queryParams"
  ]
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "input": {
      "type": "object",
      "properties": {
        "type": {
          "const": "http"
        },
        "method": {
          "const": "GET"
        },
        "queryParams": {
          "properties": {
            "lat": {
              "type": "number",
              "minimum": -90,
              "maximum": 90,
              "description": "Latitude (WGS84)."
            },
            "lon": {
              "type": "number",
              "minimum": -180,
              "maximum": 180,
              "description": "Longitude (WGS84)."
            }
          },
          "required": [
            "lat",
            "lon"
          ]
        }
      },
      "required": [
        "type",
        "method",
        "queryParams"
      ]
    }
  },
  "required": [
    "input"
  ]
}