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OpenAPI Specification

openapi: 3.2.0
info:
  title: Cito QR Code API
  version: 1.0.0
  description: Utilities API — QR code generation and sports/esports data (Fortnite, CoD, LoL, Apex, Dota 2, CS2, UFC, Tennis, RAF Wrestling, BKFC).
  contact:
    name: Cito API Support
    url: https://citoapi.com
  x-logo:
    url: https://citoapi.com/logo.png
servers:
- url: https://api.citoapi.com/api/v1
  description: Production
security:
- ApiKeyAuth: []
tags:
- name: QR Code
  description: Generate QR codes with optional logo overlay.
paths:
  /qr/generate:
    get:
      summary: Generate QR code (simple)
      description: Generate a QR code via query parameters. Returns a raw PNG, SVG, or base64 JSON. Use the POST endpoint for logo overlay.
      operationId: generateQrGet
      tags:
      - QR Code
      parameters:
      - name: data
        in: query
        required: true
        description: Text or URL to encode.
        schema:
          type: string
          maxLength: 2048
          example: https://citoapi.com
      - name: size
        in: query
        description: Output size in pixels.
        schema:
          type: integer
          default: 300
          minimum: 100
          maximum: 2000
      - name: format
        in: query
        description: Output format.
        schema:
          type: string
          enum:
          - png
          - svg
          - base64
          default: png
      - name: fg
        in: query
        description: Foreground hex color.
        schema:
          type: string
          default: '#000000'
          example: '#000000'
      - name: bg
        in: query
        description: Background hex color.
        schema:
          type: string
          default: '#ffffff'
          example: '#ffffff'
      - name: margin
        in: query
        description: Quiet zone width (0–10).
        schema:
          type: integer
          default: 4
          minimum: 0
          maximum: 10
      - name: ec
        in: query
        description: Error correction level.
        schema:
          type: string
          enum:
          - L
          - M
          - Q
          - H
          default: M
      responses:
        '200':
          description: QR code image (PNG binary or SVG string) or JSON with base64 image.
          content:
            image/png:
              schema:
                type: string
                format: binary
            image/svg+xml:
              schema:
                type: string
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  data:
                    type: object
                    properties:
                      image:
                        type: string
                        example: data:image/png;base64,...
                      format:
                        type: string
                        example: png
                      size:
                        type: integer
                        example: 300
        '400':
          description: Validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Invalid or missing API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
    post:
      summary: Generate QR code (with logo)
      description: Generate a QR code with full options including an optional centered logo overlay. Logo is provided as a base64 data URL.
      operationId: generateQrPost
      tags:
      - QR Code
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/QrGenerateBody'
            example:
              data: https://citoapi.com
              size: 400
              format: png
              foreground: '#000000'
              background: '#ffffff'
              logo:
                image: data:image/png;base64,iVBORw0KGgo...
                sizeRatio: 0.25
                padding: 8
      responses:
        '200':
          description: QR code image or base64 JSON.
          content:
            image/png:
              schema:
                type: string
                format: binary
            image/svg+xml:
              schema:
                type: string
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  data:
                    type: object
                    properties:
                      image:
                        type: string
                        example: data:image/png;base64,...
                      format:
                        type: string
                        example: png
                      size:
                        type: integer
                        example: 400
        '400':
          description: Validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Invalid or missing API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      properties:
        success:
          type: boolean
          example: false
        error:
          type: string
          example: Validation error message
    QrGenerateBody:
      type: object
      required:
      - data
      properties:
        data:
          type: string
          description: Text or URL to encode into the QR code.
          example: https://citoapi.com
          maxLength: 2048
        size:
          type: integer
          description: Output image size in pixels (width = height).
          default: 300
          minimum: 100
          maximum: 2000
          example: 400
        format:
          type: string
          description: Output format.
          enum:
          - png
          - svg
          - base64
          default: png
        foreground:
          type: string
          description: Foreground (dark module) hex color.
          default: '#000000'
          example: '#000000'
        background:
          type: string
          description: Background hex color.
          default: '#ffffff'
          example: '#ffffff'
        margin:
          type: integer
          description: Quiet zone width in modules.
          default: 4
          minimum: 0
          maximum: 10
        errorCorrection:
          type: string
          description: Error correction level. Automatically forced to H when a logo is provided.
          enum:
          - L
          - M
          - Q
          - H
          default: M
        logo:
          type: object
          description: Optional logo to overlay in the center of the QR code. Requires error correction H (set automatically).
          required:
          - image
          properties:
            image:
              type: string
              description: Base64-encoded image with data URL prefix (e.g. data:image/png;base64,...).
              example: data:image/png;base64,iVBORw0KGgo...
            sizeRatio:
              type: number
              description: Logo size as a fraction of the QR code size. Capped at 0.35 to preserve scannability.
              default: 0.25
              minimum: 0.1
              maximum: 0.35
            padding:
              type: integer
              description: White padding around the logo in pixels.
              default: 8
              minimum: 0
              maximum: 50
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: Your Cito API key. Get one at https://citoapi.com