USDA SNAP Retailer Locator Service API

openapi: 3.0.3
info:
  title: SNAP Retailer Location Data Retailers Service API
  description: Esri ArcGIS Feature Service published by the USDA Food and Nutrition Administration (FNA, formerly FNS) exposing location records for every currently authorized SNAP retailer nationwide. The service is anonymous and read-only (Query capability only - no create/update/delete). It is the same live data source (ArcGIS item 8b260f9a10b0459aa441ad8588c2251c) embedded in the public retailer locator at https://www.fna.usda.gov/snap/retailer-locator. All endpoints, query parameters, and the field list below were confirmed live against the production service on the review date; no API key is required.
  version: '1.0'
  contact:
    name: USDA Food and Nutrition Administration
    url: https://www.fna.usda.gov/snap/retailer-locator
  license:
    name: Public Domain (U.S. Government Work)
    url: https://www.usa.gov/government-works
servers:
- url: https://services1.arcgis.com/RLQu0rK7h4kbsBq5/arcgis/rest/services/snap_retailer_location_data/FeatureServer
  description: USDA FNA hosted ArcGIS Feature Service (production)
tags:
- name: Service
  description: Feature service and layer metadata.
paths:
  /:
    get:
      operationId: getServiceMetadata
      tags:
      - Service
      summary: Get feature service metadata
      description: Returns service-level metadata, including the list of layers (this service publishes a single layer, id 0, "snap_retailer_location_data").
      parameters:
      - $ref: '#/components/parameters/Format'
      responses:
        '200':
          description: Feature service metadata.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ServiceMetadata'
  /0:
    get:
      operationId: getLayerMetadata
      tags:
      - Service
      summary: Get layer metadata
      description: Returns layer-level metadata for the SNAP retailer location layer - field definitions, geometry type (esriGeometryPoint), capabilities (Query only), maxRecordCount (1,000), and supported query formats (JSON, GeoJSON, PBF).
      parameters:
      - $ref: '#/components/parameters/Format'
      responses:
        '200':
          description: Layer metadata.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LayerMetadata'
components:
  schemas:
    FieldDefinition:
      type: object
      properties:
        name:
          type: string
        type:
          type: string
        alias:
          type: string
    ServiceMetadata:
      type: object
      properties:
        currentVersion:
          type: number
        layers:
          type: array
          items:
            type: object
            properties:
              id:
                type: integer
              name:
                type: string
        capabilities:
          type: string
          example: Query
        maxRecordCount:
          type: integer
          example: 1000
        supportedQueryFormats:
          type: string
          example: JSON
    LayerMetadata:
      type: object
      properties:
        name:
          type: string
          example: snap_retailer_location_data
        geometryType:
          type: string
          example: esriGeometryPoint
        capabilities:
          type: string
          example: Query
        maxRecordCount:
          type: integer
          example: 1000
        supportedQueryFormats:
          type: string
          example: JSON, geoJSON, PBF
        fields:
          type: array
          items:
            $ref: '#/components/schemas/FieldDefinition'
  parameters:
    Format:
      name: f
      in: query
      required: false
      description: Response format.
      schema:
        type: string
        enum:
        - json
        - geojson
        - pbf
        default: json