Gengo Service API

openapi: 3.2.0
info:
  title: Gengo Service API
  version: '2.0'
  description: The Gengo API (v2) lets you programmatically order human translation.
  contact:
    name: Gengo Support
    url: https://developers.gengo.com
    email: support@gengo.com
  termsOfService: https://gengo.com/terms-of-service/
  x-apis-json:
    generated: '2026-07-19'
    method: generated
    source: https://developers.gengo.com/v2/api_methods/
    note: Faithfully generated from the published Gengo API v2 reference (endpoints, HTTP methods, summaries, parameters and response envelope documented at developers.gengo.com). Gengo does not publish an OpenAPI/Swagger file.
servers:
- url: https://api.gengo.com/v2
  description: Production
- url: http://api.sandbox.gengo.com/v2
  description: Sandbox (test environment; free test credits, faux-translator triggers)
security:
- ApiKey: []
tags:
- name: Service
  description: Language pairs, supported languages, quotes and unit counts.
paths:
  /translate/service/language_pairs:
    get:
      tags:
      - Service
      operationId: getServiceLanguagePairs
      summary: Returns supported translation language pairs, tiers, and credit prices
      security: []
      parameters:
      - name: lc_src
        in: query
        required: false
        schema:
          type: string
        description: Source language code; filters to relevant language pairs.
      responses:
        '200':
          description: Language pairs envelope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
        default:
          $ref: '#/components/responses/Error'
  /translate/service/languages:
    get:
      tags:
      - Service
      operationId: getServiceLanguages
      summary: Returns a list of supported languages and their language codes
      security: []
      responses:
        '200':
          description: Languages envelope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
        default:
          $ref: '#/components/responses/Error'
  /translate/service/quote:
    post:
      tags:
      - Service
      operationId: postServiceQuote
      summary: Returns credit quote and unit count for text based on content, tier, and…
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              properties:
                data:
                  type: string
                  description: JSON-encoded jobs map to quote.
      responses:
        '200':
          description: Quote envelope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
        default:
          $ref: '#/components/responses/Error'
  /translate/service/quote/file:
    post:
      tags:
      - Service
      operationId: postServiceQuoteFile
      summary: Returns credit quote and unit count for uploaded file content
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                data:
                  type: string
                  description: JSON-encoded jobs map referencing uploaded files.
                file_key:
                  type: string
                  format: binary
                  description: Uploaded file(s) keyed to the jobs payload.
      responses:
        '200':
          description: File quote envelope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
        default:
          $ref: '#/components/responses/Error'
  /translate/service/unit_count:
    get:
      tags:
      - Service
      operationId: getServiceUnitCount
      summary: Returns unit type and unit count for text based on content and language code…
      security: []
      responses:
        '200':
          description: Unit count envelope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
        default:
          $ref: '#/components/responses/Error'
components:
  responses:
    Error:
      description: Error envelope (opstat=error) carrying a numeric Gengo error code.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Envelope:
      type: object
      properties:
        opstat:
          type: string
          enum:
          - ok
          - error
        response:
          type: object
      required:
      - opstat
    Error:
      type: object
      properties:
        opstat:
          type: string
          example: error
        err:
          type: object
          properties:
            code:
              type: integer
              example: 1100
            msg:
              type: string
              example: api_sig is a required field
      required:
      - opstat
      - err
  securitySchemes:
    ApiKey:
      type: apiKey
      in: query
      name: api_key
      description: Public API key identifying the account. Every authenticated call must also include `ts` (Unix epoch) and `api_sig` (HMAC-SHA1 of `ts` keyed by the account private key). Keys are created on the account API settings page.