openapi: 3.1.0
info:
  title: Climatiq Autopilot Travel API
  version: '3'
  description: Climatiq is a carbon emissions calculation API that gives developers programmatic access to a curated database of emission factors and to purpose-built calculation endpoints. The API exposes search over the factor catalog and a family of estimation endpoints for activity-based and spend-based calculations across travel, freight, energy, cloud computing, procurement, and CBAM workflows. Authentication uses an API key sent as a Bearer token in the Authorization header. Responses are JSON with deterministic emission outputs in CO2e (kg) plus the underlying factor metadata.
  contact:
    name: Climatiq Support
    url: https://www.climatiq.io/support
  license:
    name: Climatiq Terms of Service
    url: https://www.climatiq.io/legal/terms
servers:
- url: https://api.climatiq.io
  description: Climatiq Production API
security:
- bearerAuth: []
tags:
- name: Travel
  description: Emissions from passenger travel and accommodation.
paths:
  /travel/v1/car:
    post:
      operationId: estimateTravelCar
      summary: Estimate car travel emissions
      description: Calculates emissions for passenger car travel based on distance and vehicle parameters.
      tags:
      - Travel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Car travel emissions.
  /travel/v1/flight:
    post:
      operationId: estimateTravelFlight
      summary: Estimate flight emissions
      description: Calculates passenger flight emissions for one or more legs using IATA airport codes and class of travel.
      tags:
      - Travel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Flight emissions estimate.
  /travel/v1/hotel:
    post:
      operationId: estimateTravelHotel
      summary: Estimate hotel stay emissions
      description: Calculates emissions associated with hotel accommodation by country, number of nights, and number of rooms.
      tags:
      - Travel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Hotel stay emissions.
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key