FEMA National Flood Insurance Program (NFIP) claims history for a US location — the flood losses actually paid out in an area. Requires state (2-letter); optionally narrow by county (5-digit FIPS), ZIP, and yearOfLoss range (yearFrom/yearTo). Returns the total matching claim count plus recent redacted claim records (date of loss, county / census tract / ZIP, flood zone rated at time of loss, cause of damage, water depth, net building + contents payment in USD, building coverage, approximate lat/lon), largest net payout first (the notable losses). FEMA redacts the city field, so filter by county FIPS or ZIP. Free, public-domain (OpenFEMA). Distinct from geo.flood-zone (current SFHA designation) and gov.risk-index (modeled future risk): this is the realized loss track record — for insurance underwriting and property due diligence.
/api/gov/nfip-claimsPAYMENT-SIGNATURE.The nfip claims API is a pay-per-call gov endpoint built for AI agents and autonomous software. FEMA National Flood Insurance Program (NFIP) claims history for a US location — the flood losses actually paid out in an area.
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in nfip claims data source for an agent tool-use loop, an MCP host, or a backend that needs gov data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
staterequired | string | 2-letter US state/territory code. min 2 chars · max 2 chars |
county | string | match ^\d{5}$ |
zip | string | match ^\d{5}$ |
yearFrom | integer | min 1970 · max 2100 |
yearTo | integer | min 1970 · max 2100 |
limit | integer | min 1 · max 50 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/gov/nfip-claims?state=xx&county=12345&zip=12345&yearFrom=1970&yearTo=1970&limit=1' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/gov/nfip-claims?state=xx&county=12345&zip=12345&yearFrom=1970&yearTo=1970&limit=1' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/gov/nfip-claims?state=xx&county=12345&zip=12345&yearFrom=1970&yearTo=1970&limit=1'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.gov.nfipClaims({
"state": "xx",
"county": "12345",
"zip": "12345",
"yearFrom": 1970,
"yearTo": 1970,
"limit": 1
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.gov.nfip_claims(state="xx", county="12345", zip="12345", yearFrom=1970, yearTo=1970, limit=1)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
// EVM_PRIVATE_KEY funds x402 payments per call.
// claude_desktop_config.json
{
"mcpServers": {
"2sio": {
"command": "npx",
"args": ["-y", "@2sio/mcp"],
"env": { "EVM_PRIVATE_KEY": "0x..." }
}
}
}
// 2. Once the server is running, agents call this tool via standard MCP:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "gov.nfip-claims",
"arguments": {
"state": "xx",
"county": "12345",
"zip": "12345",
"yearFrom": 1970,
"yearTo": 1970,
"limit": 1
}
}
}| Field | Type | Description |
|---|---|---|
query | object | |
totalClaims | number | |
returned | number | |
returnedSummary | object | |
claims | array | |
source | object | |
note | string |
{
"query": {
"state": "example",
"county": "example",
"zip": "example",
"yearFrom": 1,
"yearTo": 1,
"limit": 1
},
"totalClaims": 1,
"returned": 1,
"returnedSummary": {
"totalPaid": 1,
"averagePaid": 1
},
"claims": [
{
"dateOfLoss": "example",
"yearOfLoss": 1,
"countyCode": "example",
"censusTract": "example",
"zipCode": "example",
"state": "example",
"ratedFloodZone": "example",
"causeOfDamage": "example",
"waterDepth": 1,
"occupancyType": 1,
"netBuildingPaymentUSD": 1,
"netContentsPaymentUSD": 1,
"totalAmountPaid": 1,
"totalBuildingInsuranceCoverage": 1,
"latitude": 1,
"longitude": 1
}
],
"source": {
"provider": "example",
"url": "example",
"license": "example"
},
"note": "example"
}