openapi: 3.0.1
info:
  title: Kintsugi Tax Address Validation API
  description: REST API for the Kintsugi AI sales tax compliance and automation platform. Calculate US sales tax, VAT, and GST; sync transactions, products, and customers; validate addresses; manage physical nexus, exemptions, and registrations; and retrieve automated filings. Authentication uses an API key supplied in the x-api-key header together with the x-organization-id header identifying the organization. Endpoints, fields, and schemas in this document reflect Kintsugi's public API reference at docs.trykintsugi.com and are not exhaustive; consult the provider documentation for the authoritative contract.
  termsOfService: https://www.trykintsugi.com/terms-of-service
  contact:
    name: Kintsugi Support
    url: https://www.trykintsugi.com/support
  version: '1.0'
servers:
- url: https://api.trykintsugi.com/v1
  description: Kintsugi production API base URL
security:
- ApiKeyAuth: []
  OrganizationId: []
tags:
- name: Address Validation
  description: Address search and suggestions for jurisdiction assignment.
paths:
  /addresses/search:
    get:
      operationId: searchAddress
      tags:
      - Address Validation
      summary: Validate and search an address.
      parameters:
      - name: street_1
        in: query
        schema:
          type: string
      - name: city
        in: query
        schema:
          type: string
      - name: state
        in: query
        schema:
          type: string
      - name: postal_code
        in: query
        schema:
          type: string
      - name: country
        in: query
        schema:
          type: string
      responses:
        '200':
          description: The validated address.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Address'
  /addresses/suggestions:
    get:
      operationId: getAddressSuggestions
      tags:
      - Address Validation
      summary: Get address suggestions.
      parameters:
      - name: query
        in: query
        schema:
          type: string
      responses:
        '200':
          description: Suggested addresses.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Address'
components:
  schemas:
    Address:
      type: object
      properties:
        type:
          type: string
          enum:
          - SHIP_TO
          - BILL_TO
        street_1:
          type: string
        street_2:
          type: string
        city:
          type: string
        county:
          type: string
        state:
          type: string
        postal_code:
          type: string
        country:
          type: string
        full_address:
          type: string
      required:
      - postal_code
      - country
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key generated in the Kintsugi dashboard.
    OrganizationId:
      type: apiKey
      in: header
      name: x-organization-id
      description: Identifier of the organization the request acts on behalf of.