WritersLogic Verifiable AI Agent Hub Property Risk API
The Property Risk API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for property risk.
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curl "https://apis.io/api/v1/apis/writerslogic-com:writerslogic-com-property-risk-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Property Risk API
version: 2.0.0
description: Pay-per-call agents settled in USDC on Base via x402. Every response carries a signed provenance envelope.
contact:
name: WritersLogic
url: https://writerslogic.com/agents
email: agents@writerslogic.com
servers:
- url: https://agents.writerslogic.com
tags:
- name: Property Risk
paths:
/api/v1/property-risk:
post:
operationId: property_risk
summary: Property Hazard & Site Risk Report
description: 'Before an agent recommends, underwrites or screens a US property, reads free public federal hazard data for a street address or lat/lon: Census geocode, FEMA National Flood Hazard Layer flood zone, SFHA status and base flood elevation, USGS ASCE 7-22 seismic design values, FEMA National Risk Index tract ratings (wildfire, hurricane, tornado and more), OpenFEMA county disaster declarations for 10 years, and EPA Superfund NPL, brownfield and Toxics Release Inventory sites nearby. A fixed rule table turns them into GO, CAUTION or NO_GO with every factor''s raw value, points, source URL and fetch time; an optional intended use (residential, commercial, industrial, development) reweights it. Abstains with INSUFFICIENT_DATA when a layer fails and the rest looks clear, and reports which layers failed. No LLM. NOT covered, and never inferred: zoning, setbacks, permitted use, building permits, assessor and parcel records (no national API), parcel-level elevation, soil or contamination assessment. Screening only; not a flood determination, appraisal or advice.
Price: 0.10 USDC on Base (x402).'
x-x402-price-usdc: '0.10'
x-x402-amount: '100000'
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.10'
x-audience: business
x-sample-url: https://agents.writerslogic.com/api/v1/samples/property-risk
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
properties:
address:
type: string
minLength: 5
maxLength: 200
description: US street address with city and state or ZIP, e.g. 1111 Lincoln Rd, Miami Beach, FL 33139. Give this or lat with lon.
lat:
type: number
minimum: -90
maximum: 90
description: Latitude in WGS84 degrees; give with lon instead of address.
lon:
type: number
minimum: -180
maximum: 180
description: Longitude in WGS84 degrees; give with lat.
intended_use:
type: string
enum:
- residential
- commercial
- industrial
- development
description: 'Optional. Reweights the score: residential counts environmental proximity 1.5x, industrial 0.5x, development counts flood and seismic 1.5x.'
example:
address: 1111 Lincoln Rd, Miami Beach, FL 33139
intended_use: residential
responses:
'200':
description: Paid result with provenance
content:
application/json:
schema:
type: object
properties:
data:
type: object
required:
- verdict
- score
- thresholds
- reasons
- hard_stops
- summary
- next_step
- location
- factors
- layers
- failed_layers
- partial
- details
- not_checked
- llm
- disclaimer
properties:
verdict:
type: string
enum:
- GO
- CAUTION
- NO_GO
- INSUFFICIENT_DATA
description: 'Rule-based site-risk screen. NO_GO: a hard stop (FEMA coastal V zone) or weighted score at or above no_go_at. CAUTION: score at or above caution_at. GO: below caution_at with every layer answered. INSUFFICIENT_DATA: a layer failed and the available data did not already reach CAUTION.'
score:
type: number
description: Sum of weighted factor points; lower is safer.
thresholds:
type: object
properties:
caution_at:
type: number
no_go_at:
type: number
reasons:
type: array
items:
type: string
hard_stops:
type: array
items:
type: string
summary:
type: string
next_step:
type: string
intended_use:
anyOf:
- type: string
- type: 'null'
weights:
type: object
description: Category multipliers applied to factor points.
location:
type: object
properties:
matched_address:
anyOf:
- type: string
- type: 'null'
lat:
type: number
lon:
type: number
state_fips:
type: string
county_fips:
type: string
county_name:
anyOf:
- type: string
- type: 'null'
state_name:
anyOf:
- type: string
- type: 'null'
tract_fips:
type: string
input_mode:
type: string
enum:
- address
- coordinates
factors:
type: array
description: Every contributing factor with raw value, points, weight, basis, source URL and fetch time.
items:
type: object
properties:
id:
type: string
category:
type: string
enum:
- flood
- seismic
- hazard_index
- environmental
- disaster_history
label:
type: string
raw_value: {}
points:
type: number
weight:
type: number
weighted_points:
type: number
hard_stop:
type: boolean
basis:
type: string
source:
type: string
source_url:
type: string
fetched_at:
type: string
layers:
type: array
items:
type: object
properties:
id:
type: string
status:
type: string
enum:
- ok
- failed
source:
type: string
source_url:
type: string
fetched_at:
type: string
error:
type: string
failed_layers:
type: array
items:
type: string
partial:
type: boolean
notes:
type: array
items:
type: string
details:
type: object
description: 'Parsed per-layer results: flood (zone, SFHA, base flood elevation), seismic, national_risk_index, disaster_declarations, superfund_npl, brownfields, toxics_release_inventory. Null where the layer failed.'
not_checked:
type: array
description: What this report does not cover, stated plainly.
items:
type: object
properties:
item:
type: string
reason:
type: string
llm:
type: string
enum:
- not_used
disclaimer:
type: string
_provenance:
type: object
description: C2PA-aligned manifest and W3C VC 2.0 (eddsa-jcs-2022) issued by the hub DID; verify at POST /api/v1/verify-provenance
required:
- data
- _provenance
'400':
description: Invalid request (no payment consumed)
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'401':
description: Invalid X-API-KEY
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'402':
description: Payment required or invalid
content:
application/json:
schema:
type: object
description: x402 v2 PaymentRequired (also base64 in the PAYMENT-REQUIRED header)
properties:
x402Version:
type: integer
error:
type: string
code:
type: string
resource:
type: object
accepts:
type: array
items:
type: object
extensions:
type: object
'502':
description: Upstream failure; the payment is released or not settled
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
tags:
- Property Risk
components:
securitySchemes:
x402:
type: apiKey
in: header
name: PAYMENT-SIGNATURE
description: x402 v2 payment payload (base64) sent after a 402 challenge
apiKey:
type: apiKey
in: header
name: X-API-KEY