openapi: 3.0.3
info:
  title: Sinay Maritime APIs CO2 Emission Usage API
  description: 'Consolidated OpenAPI description of five Sinay Developers Platform APIs - Ports and Vessels, Metocean, CO2 Emission, ETA (ETAC), and Port Congestion. Every Sinay API is served over HTTPS from the single host api.sinay.ai, with each product mounted under its own versioned base path (for example `/co2/api/v2` or `/ports-vessels/api/v1`). All endpoints require an API key passed in an `API_KEY` request header; get a free key from the Sinay Developers Platform (https://developers.sinay.ai/).

    This document consolidates the individual per-product Swagger files published live at https://api.sinay.ai/<product>/api/<version>/swagger.yaml (confirmed 2026-07-12). Paths, methods, the API_KEY security scheme, and the CO2 / ETA / congestion request and response shapes below are taken directly from those live specs. Where a request or response body is only summarized here rather than fully expanded, consult the upstream per-product Swagger.'
  version: '1.0'
  contact:
    name: Sinay
    url: https://sinay.ai
servers:
- url: https://api.sinay.ai
  description: Sinay Developers Platform (all products; product base path in each route)
security:
- ApiKey: []
tags:
- name: Usage
  description: Monthly API usage and credit-consumption reporting.
paths:
  /ports-vessels/api/v1/usages:
    get:
      operationId: getPortsVesselsUsages
      tags:
      - Usage
      summary: Retrieve your monthly usages for the Ports and Vessels API.
      parameters:
      - $ref: '#/components/parameters/UsageStartTime'
      - $ref: '#/components/parameters/UsageEndTime'
      responses:
        '200':
          description: Monthly usages.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UsagesResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /metocean/api/v1/usages:
    get:
      operationId: getMetoceanUsages
      tags:
      - Usage
      summary: Retrieve your monthly usages for the Metocean API.
      parameters:
      - $ref: '#/components/parameters/UsageStartTime'
      - $ref: '#/components/parameters/UsageEndTime'
      responses:
        '200':
          description: Monthly usages.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UsagesResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /co2/api/v2/usages:
    get:
      operationId: getCo2Usages
      tags:
      - Usage
      summary: Retrieve your monthly usages for the CO2 Emission API.
      parameters:
      - $ref: '#/components/parameters/UsageStartTime'
      - $ref: '#/components/parameters/UsageEndTime'
      responses:
        '200':
          description: Monthly usages.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UsagesResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /etac/api/v1/usages:
    get:
      operationId: getEtaUsages
      tags:
      - Usage
      summary: Retrieve your monthly usages for the ETA API.
      parameters:
      - $ref: '#/components/parameters/UsageStartTime'
      - $ref: '#/components/parameters/UsageEndTime'
      responses:
        '200':
          description: Monthly usages.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UsagesResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /congestion/api/v1/consumption/current-period:
    get:
      operationId: retrieveCurrentConsumptionPeriod
      tags:
      - Usage
      summary: Retrieve the current credit consumption period.
      responses:
        '200':
          description: The current credit consumption period.
          content:
            application/json:
              schema:
                type: object
        '401':
          $ref: '#/components/responses/Unauthorized'
  /congestion/api/v1/consumption/periods:
    get:
      operationId: retrieveConsumptionPeriods
      tags:
      - Usage
      summary: Retrieve all credit consumption periods.
      responses:
        '200':
          description: All credit consumption periods.
          content:
            application/json:
              schema:
                type: object
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    ErrorInfo:
      type: object
      required:
      - errorCode
      - message
      - details
      - time
      properties:
        errorCode:
          type: integer
          format: int32
        message:
          type: string
        details:
          type: array
          items:
            type: string
        time:
          type: string
          format: date-time
    UsagesResponse:
      type: object
      properties:
        allCalls:
          type: integer
          format: int64
        successCalls:
          type: integer
          format: int64
        clientErrorCalls:
          type: integer
          format: int64
        serverErrorCalls:
          type: integer
          format: int64
        consumedApiUnits:
          type: integer
          format: int64
  parameters:
    UsageStartTime:
      name: startTime
      in: query
      required: false
      description: Start time at which usages must be found.
      schema:
        type: string
        format: date-time
    UsageEndTime:
      name: endTime
      in: query
      required: false
      description: End time at which usages must be found.
      schema:
        type: string
        format: date-time
  responses:
    Unauthorized:
      description: The authentication failed (missing or invalid API_KEY).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorInfo'
  securitySchemes:
    ApiKey:
      type: apiKey
      in: header
      name: API_KEY
      description: API key issued by the Sinay Developers Platform, sent in the `API_KEY` request header on every call.