openapi: 3.0.3
info:
  title: TextGears Account API
  description: TextGears is a grammar checking and text analysis REST API providing spelling corrections, grammar error detection, readability scoring, language detection, text summarization, and custom dictionary management across 11 languages. The service processes over 10.8 million API requests daily with distributed infrastructure across Estonia, Singapore, and the United States.
  version: 1.0.0
  contact:
    url: https://textgears.com
  termsOfService: https://textgears.com/terms
  license:
    name: Commercial
    url: https://textgears.com
servers:
- url: https://api.textgears.com
  description: Auto-routing (recommended)
- url: https://eu.api.textgears.com
  description: Europe
- url: https://us.api.textgears.com
  description: United States
- url: https://sg.api.textgears.com
  description: Asia (Singapore)
security:
- apiKeyQuery: []
- apiKeyHeader: []
tags:
- name: Account
  description: Account usage and quota management
paths:
  /account/resourcequota:
    get:
      operationId: getAccountResourceQuota
      summary: Get account resource quota
      description: Returns the current API quota limits for the authenticated account.
      tags:
      - Account
      responses:
        '200':
          description: Account resource quota
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/QuotaResponse'
        '400':
          $ref: '#/components/responses/ErrorResponse'
  /account/usage:
    get:
      operationId: getAccountUsage
      summary: Get account usage statistics
      description: Returns API usage statistics for the authenticated account within a date range.
      tags:
      - Account
      parameters:
      - name: period_start
        in: query
        description: Start of the usage period (Unix timestamp or ISO date)
        schema:
          type: string
      - name: period_end
        in: query
        description: End of the usage period (Unix timestamp or ISO date)
        schema:
          type: string
      responses:
        '200':
          description: Account usage statistics
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UsageResponse'
        '400':
          $ref: '#/components/responses/ErrorResponse'
components:
  schemas:
    QuotaResponse:
      type: object
      properties:
        status:
          type: boolean
        response:
          type: object
          properties:
            limit:
              type: integer
              description: Total request limit
            used:
              type: integer
              description: Requests used
            remaining:
              type: integer
              description: Remaining requests
    UsageResponse:
      type: object
      properties:
        status:
          type: boolean
        response:
          type: array
          items:
            type: object
            properties:
              date:
                type: string
                format: date
              requests:
                type: integer
    ErrorResponse:
      type: object
      properties:
        status:
          type: boolean
          example: false
        error_code:
          type: integer
          description: Error code
          enum:
          - 500
          - 501
          - 600
          - 606
          - 607
        description:
          type: string
          description: Human-readable error description
  responses:
    ErrorResponse:
      description: API error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          examples:
            invalidKey:
              summary: Invalid API key
              value:
                status: false
                error_code: 600
                description: Invalid key
            rateLimitExceeded:
              summary: Rate limit exceeded
              value:
                status: false
                error_code: 607
                description: Request limit exceeded
  securitySchemes:
    apiKeyQuery:
      type: apiKey
      in: query
      name: key
      description: API key passed as a query parameter
    apiKeyHeader:
      type: http
      scheme: basic
      description: API key passed as HTTP Basic Authorization header value