GunTab REST API

openapi: 3.0.3
info:
  title: GunTab REST API
  description: >-
    The GunTab REST API allows online firearms marketplaces and retail websites
    to integrate safe and convenient firearms payment processing, manage
    invoices (payment requests), confirm and fulfill orders, validate FFLs, and
    receive webhook events for transaction lifecycle changes.
  version: "1.0.0"
  contact:
    name: GunTab
    url: https://www.guntab.com/documentation/rest-api
  license:
    name: Proprietary
servers:
  - url: https://api.guntab.com/v1
    description: Production
tags:
  - name: Invoices
    description: Payment request lifecycle management
  - name: Users
    description: Marketplace user lookup
  - name: FFLs
    description: Federal Firearms License verification
  - name: Webhooks
    description: Webhook subscription management (deprecated)
security:
  - TokenAuth: []
paths:
  /invoices:
    post:
      tags: [Invoices]
      summary: Create an invoice
      description: Creates a new GunTab invoice (payment request) for a firearms transaction.
      operationId: createInvoice
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/InvoiceCreateRequest'
      responses:
        '201':
          description: Invoice created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
        '400':
          $ref: '#/components/responses/Error'
        '401':
          $ref: '#/components/responses/Error'
  /invoices/{id}:
    get:
      tags: [Invoices]
      summary: Read an invoice
      operationId: readInvoice
      parameters:
        - $ref: '#/components/parameters/InvoiceId'
      responses:
        '200':
          description: Invoice retrieved
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
        '404':
          $ref: '#/components/responses/Error'
  /invoices/{id}/cancels:
    post:
      tags: [Invoices]
      summary: Cancel an invoice
      operationId: cancelInvoice
      parameters:
        - $ref: '#/components/parameters/InvoiceId'
      responses:
        '200':
          description: Invoice cancelled
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
  /invoices/{id}/platform_confirmations:
    post:
      tags: [Invoices]
      summary: Confirm an invoice as the platform
      operationId: platformConfirmInvoice
      parameters:
        - $ref: '#/components/parameters/InvoiceId'
      responses:
        '200':
          description: Platform confirmation recorded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
  /invoices/{id}/seller_confirmations:
    post:
      tags: [Invoices]
      summary: Confirm an invoice as the seller
      operationId: sellerConfirmInvoice
      parameters:
        - $ref: '#/components/parameters/InvoiceId'
      responses:
        '200':
          description: Seller confirmation recorded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
  /invoices/{id}/fulfillments:
    post:
      tags: [Invoices]
      summary: Fulfill an invoice
      description: Records fulfillment with a tracking code (or pickup designation).
      operationId: fulfillInvoice
      parameters:
        - $ref: '#/components/parameters/InvoiceId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                tracking_code:
                  type: string
                  description: Carrier tracking code (required unless pickup).
      responses:
        '200':
          description: Fulfillment recorded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
  /users/{email}:
    get:
      tags: [Users]
      summary: Read a user
      description: Marketplace-only endpoint to look up a user by URL-encoded email.
      operationId: readUser
      parameters:
        - in: path
          name: email
          required: true
          schema:
            type: string
            format: email
          description: URL-encoded email address.
      responses:
        '200':
          description: User found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/User'
        '404':
          $ref: '#/components/responses/Error'
  /ffls/{license_number}/claim_verification_code_calls:
    post:
      tags: [FFLs]
      summary: Trigger FFL verification call
      description: Calls the FFL to provide a claim verification code (marketplace, alpha).
      operationId: callFflVerification
      parameters:
        - in: path
          name: license_number
          required: true
          schema:
            type: string
          description: FFL license number.
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                claim_verification_code:
                  type: string
                  minLength: 1
                  maxLength: 10
      responses:
        '202':
          description: Verification call queued
  /webhooks:
    post:
      tags: [Webhooks]
      summary: Create webhook (deprecated)
      deprecated: true
      operationId: createWebhook
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required: [url]
              properties:
                url:
                  type: string
                  format: uri
      responses:
        '201':
          description: Webhook created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Webhook'
  /webhooks/{id}:
    get:
      tags: [Webhooks]
      summary: Read webhook (deprecated)
      deprecated: true
      operationId: readWebhook
      parameters:
        - in: path
          name: id
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Webhook retrieved
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Webhook'
    delete:
      tags: [Webhooks]
      summary: Delete webhook (deprecated)
      deprecated: true
      operationId: deleteWebhook
      parameters:
        - in: path
          name: id
          required: true
          schema:
            type: string
      responses:
        '204':
          description: Webhook deleted
components:
  securitySchemes:
    TokenAuth:
      type: apiKey
      in: header
      name: Authorization
      description: 'Format: `Token {token_uuid}` issued to verified email users.'
  parameters:
    InvoiceId:
      in: path
      name: id
      required: true
      schema:
        type: string
      description: Unique invoice identifier.
  responses:
    Error:
      description: Error response
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    InvoiceCreateRequest:
      type: object
      required: [merchandise_amount_cents, shipping_amount_cents, listings]
      properties:
        buyer_email:
          type: string
          format: email
        buyer_email_notifications_disabled:
          type: boolean
        manual_sales_tax_amount_cents:
          type: integer
        marketplace_buyer_fee_amount_cents:
          type: integer
        marketplace_seller_fee_amount_cents:
          type: integer
        merchandise_amount_cents:
          type: integer
        payment_method_convenience_fee_paid_by:
          type: string
          enum: [buyer, seller]
        platform_confirmation_required:
          type: boolean
        receiving_address:
          $ref: '#/components/schemas/Address'
        receiving_ffl_license_number:
          type: string
        redirect_url:
          type: string
          format: uri
        seller_confirmation_required:
          type: boolean
        seller_email:
          type: string
          format: email
          description: Required for marketplace integrations.
        seller_order_id:
          type: string
        service_fee_paid_by:
          type: string
          enum: [buyer, seller, split]
        shipping_amount_cents:
          type: integer
        listings:
          type: array
          items:
            $ref: '#/components/schemas/Listing'
    Invoice:
      type: object
      properties:
        id:
          type: string
        status:
          type: string
        merchandise_amount_cents:
          type: integer
        shipping_amount_cents:
          type: integer
        buyer_email:
          type: string
        seller_email:
          type: string
        listings:
          type: array
          items:
            $ref: '#/components/schemas/Listing'
        created_at:
          type: string
          format: date-time
        updated_at:
          type: string
          format: date-time
    Listing:
      type: object
      required: [amount_cents, description, listing_type_id, quantity, title]
      properties:
        amount_cents:
          type: integer
        description:
          type: string
        external_id:
          type: string
        listing_type_id:
          type: integer
        quantity:
          type: integer
        serial_number:
          type: string
        title:
          type: string
        url:
          type: string
          format: uri
    Address:
      type: object
      properties:
        line1:
          type: string
        line2:
          type: string
        city:
          type: string
        state_code:
          type: string
        zip:
          type: string
    User:
      type: object
      properties:
        email:
          type: string
          format: email
        verified:
          type: boolean
    Webhook:
      type: object
      properties:
        id:
          type: string
        url:
          type: string
          format: uri
    ErrorResponse:
      type: object
      properties:
        errors:
          type: array
          items:
            type: string