Cloverly
Cloverly Estimates API

Create and retrieve carbon-offset estimates without committing a purchase. Supports shipping (distance + weight), vehicle (distance + fuel efficiency), flights (passenger-miles), electricity (kWh), direct carbon weight, and fixed currency amounts. Each estimate returns a slug, the equivalent carbon in grams, the matched offset source, and the transaction cost in USD cents, then can be converted to a purchase via the Purchases API.
Cloverly Estimates API is one of 4 APIs that Cloverly publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
This API exposes 1 machine-runnable capability that can be deployed as REST, MCP, or Agent Skill surfaces via Naftiko and 1 JSON Schema definition.
Tagged areas include Carbon, Climate, Estimates, Offsets, and Sustainability. The published artifact set on APIs.io includes API documentation, an OpenAPI specification, 1 Naftiko capability spec, and 1 JSON Schema.
Documentation GitHub OpenAPI
OpenAPI Specification

openapi: 3.1.0
info:
  title: Cloverly Estimates API
  description: >
    Create, retrieve, list, and cancel carbon-offset estimates without
    committing a purchase. An estimate quotes the equivalent carbon emissions
    (in grams) and the transaction cost (in USD cents) for a hypothetical
    activity — shipping, vehicle travel, flights, electricity consumption,
    direct carbon mass, or a fixed dollar amount — and returns a slug that can
    later be converted to a purchase against the matched offset source.
  version: '2019-03-beta'
  contact:
    name: Cloverly Support
    url: https://cloverly.com/contact
  license:
    name: Cloverly Terms of Service
    url: https://cloverly.com/terms-of-service
servers:
  - url: https://api.cloverly.com
    description: Production server
security:
  - BearerAuth: []
tags:
  - name: Estimates
    description: Carbon-offset cost and emissions estimates by activity type
paths:
  /2019-03-beta/estimates:
    get:
      summary: Cloverly List Estimates
      description: List estimates created against the authenticated account.
      operationId: listEstimates
      tags:
        - Estimates
      responses:
        '200':
          description: A list of estimate records.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Estimate'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /2019-03-beta/estimates/{slug}:
    get:
      summary: Cloverly Retrieve Estimate
      description: Retrieve a single estimate by its slug.
      operationId: retrieveEstimate
      tags:
        - Estimates
      parameters:
        - $ref: '#/components/parameters/EstimateSlug'
      responses:
        '200':
          description: The estimate record.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Estimate'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      summary: Cloverly Cancel Estimate
      description: Cancel (delete) an outstanding estimate by slug.
      operationId: cancelEstimate
      tags:
        - Estimates
      parameters:
        - $ref: '#/components/parameters/EstimateSlug'
      responses:
        '200':
          description: The cancelled estimate record.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Estimate'
  /2019-03-beta/estimates/shipping:
    post:
      summary: Cloverly Estimate Shipping Offset
      description: >
        Estimate the carbon-offset cost for a shipping activity defined by
        either an origin/destination pair or an explicit distance, plus the
        package weight.
      operationId: estimateShipping
      tags:
        - Estimates
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ShippingRequest'
      responses:
        '200':
          description: A shipping estimate.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Estimate'
  /2019-03-beta/estimates/vehicle:
    post:
      summary: Cloverly Estimate Vehicle Offset
      description: >
        Estimate the carbon-offset cost for vehicle travel defined by either
        an origin/destination pair or an explicit distance, plus the vehicle's
        fuel efficiency.
      operationId: estimateVehicle
      tags:
        - Estimates
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/VehicleRequest'
      responses:
        '200':
          description: A vehicle estimate.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Estimate'
  /2019-03-beta/estimates/flights:
    post:
      summary: Cloverly Estimate Flight Offset
      description: >
        Estimate the carbon-offset cost for one or more flight legs defined
        by airports (IATA codes) and a passenger count or class of service.
      operationId: estimateFlight
      tags:
        - Estimates
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FlightRequest'
      responses:
        '200':
          description: A flight estimate.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Estimate'
  /2019-03-beta/estimates/electricity:
    post:
      summary: Cloverly Estimate Electricity Offset
      description: >
        Estimate the carbon-offset cost for electricity consumption (kWh)
        in a given country / grid region.
      operationId: estimateElectricity
      tags:
        - Estimates
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ElectricityRequest'
      responses:
        '200':
          description: An electricity estimate.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Estimate'
  /2019-03-beta/estimates/carbon:
    post:
      summary: Cloverly Estimate Carbon Offset
      description: >
        Estimate the offset cost for a direct mass of CO2-equivalent
        emissions (kg, g, pounds, or tonnes).
      operationId: estimateCarbon
      tags:
        - Estimates
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CarbonRequest'
      responses:
        '200':
          description: A carbon-weight estimate.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Estimate'
  /2019-03-beta/estimates/currency:
    post:
      summary: Cloverly Estimate Currency Offset
      description: >
        Estimate the amount of CO2 offset that can be retired for a fixed
        currency amount.
      operationId: estimateCurrency
      tags:
        - Estimates
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CurrencyRequest'
      responses:
        '200':
          description: A currency-based estimate.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Estimate'
components:
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: Cloverly public or private API key issued from the dashboard.
  parameters:
    EstimateSlug:
      name: slug
      in: path
      required: true
      description: The estimate slug returned at creation time.
      schema:
        type: string
  responses:
    Unauthorized:
      description: Invalid or missing API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: The requested resource does not exist.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Estimate:
      type: object
      properties:
        slug:
          type: string
          description: Unique identifier for the estimate.
        state:
          type: string
          enum: [estimated, purchased, cancelled]
        total_co2e_in_grams:
          type: number
          description: Equivalent CO2 emissions (in grams) calculated for the activity.
        total_cost_in_usd_cents:
          type: integer
          description: Total cost in USD cents to offset the calculated emissions.
        transaction_cost_in_usd_cents:
          type: integer
          description: Transaction-level cost (Cloverly fee + offset price) in USD cents.
        offset_cost_in_usd_cents:
          type: integer
        offset:
          $ref: '#/components/schemas/Offset'
        pretty_url:
          type: string
          format: uri
        created_at:
          type: string
          format: date-time
    Offset:
      type: object
      properties:
        slug:
          type: string
        name:
          type: string
        registry_name:
          type: string
          description: Registry that issued the credit (Verra, Gold Standard, ACR, CAR, Puro.earth, etc.).
        offset_type:
          type: string
          description: Project category (Reforestation, Biochar, DAC, Renewable Energy, Methane).
        country:
          type: string
        vintage_year:
          type: integer
        price_per_kg_in_usd_cents:
          type: number
    Place:
      type: object
      properties:
        zip:
          type: string
        postal_code:
          type: string
        country:
          type: string
        city:
          type: string
        state:
          type: string
    Weight:
      type: object
      required: [value, units]
      properties:
        value:
          type: number
        units:
          type: string
          enum: [g, kg, pounds, tonnes, mt]
    Distance:
      type: object
      required: [value, units]
      properties:
        value:
          type: number
        units:
          type: string
          enum: [meters, km, miles]
    FuelEfficiency:
      type: object
      required: [value, units, of]
      properties:
        value:
          type: number
        units:
          type: string
          enum: [mpg, km/l, l/100km]
        of:
          type: string
          enum: [gasoline, diesel]
    Currency:
      type: object
      required: [value, units]
      properties:
        value:
          type: number
        units:
          type: string
          enum: [usd, usd cents]
    ShippingRequest:
      type: object
      properties:
        to:
          $ref: '#/components/schemas/Place'
        from:
          $ref: '#/components/schemas/Place'
        distance:
          $ref: '#/components/schemas/Distance'
        weight:
          $ref: '#/components/schemas/Weight'
    VehicleRequest:
      type: object
      properties:
        to:
          $ref: '#/components/schemas/Place'
        from:
          $ref: '#/components/schemas/Place'
        distance:
          $ref: '#/components/schemas/Distance'
        fuel_efficiency:
          $ref: '#/components/schemas/FuelEfficiency'
    FlightRequest:
      type: object
      properties:
        airports:
          type: array
          items:
            type: object
            properties:
              iata:
                type: string
                example: ATL
        passengers:
          type: integer
        cabin_class:
          type: string
          enum: [economy, business, first]
    ElectricityRequest:
      type: object
      properties:
        energy:
          type: object
          required: [value, units]
          properties:
            value:
              type: number
            units:
              type: string
              enum: [kwh, mwh]
        country:
          type: string
        region:
          type: string
    CarbonRequest:
      type: object
      properties:
        weight:
          $ref: '#/components/schemas/Weight'
    CurrencyRequest:
      type: object
      properties:
        currency:
          $ref: '#/components/schemas/Currency'
    Error:
      type: object
      properties:
        error:
          type: string
Cloverly Estimates API

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OpenAPI Specification
