Tank Utility Authentication API

openapi: 3.0.3
info:
  title: Tank Utility Propane Monitor Authentication API
  version: '1.0'
  description: 'The Tank Utility API returns fuel-level and telemetry data from LTE-connected propane tank monitors. Access is read-only: a caller exchanges account credentials for a short-lived bearer token (valid ~24 hours), lists the device IDs on the account, then reads each device''s latest reading (tank fuel level %, temperature, battery, and last-report time). This description was reconstructed by API Evangelist from live probing of the production host and the published community client (PyPI tank-utility) — Tank Utility does not publish an OpenAPI document. Field coverage of the device object is representative, not exhaustive.'
  contact:
    name: Tank Utility Support
    email: support@tankutility.com
    url: https://support.tankutility.com/hc/en-us
  x-apievangelist-method: derived
  x-apievangelist-source: Live probe of https://data.tankutility.com/api (2026-07) + PyPI tank-utility 1.5.0 client source (github k20e).
servers:
- url: https://data.tankutility.com/api
  description: Production
tags:
- name: Authentication
  description: Exchange account credentials for a short-lived API token.
paths:
  /getToken:
    get:
      operationId: getToken
      summary: Get an API token
      description: Authenticate with HTTP Basic (account email as username, account password) and receive a short-lived API token. The token is valid for approximately 24 hours and is passed as the `token` query parameter to all other operations.
      tags:
      - Authentication
      security:
      - basicAuth: []
      responses:
        '200':
          description: Token issued.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TokenResponse'
              example:
                token: eyJhbGciOi...
        '400':
          description: Bad request — email not found or malformed credentials.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                statusCode: 400
                message: EMAIL_NOT_FOUND
        '401':
          description: Invalid credentials.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    TokenResponse:
      type: object
      properties:
        token:
          type: string
          description: Short-lived API token (~24h validity).
      required:
      - token
    Error:
      type: object
      description: Error envelope returned by the API.
      properties:
        statusCode:
          type: integer
        message:
          type: string
      required:
      - message
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic authentication using the Tank Utility account email (username) and password. Used only by getToken.
    tokenAuth:
      type: apiKey
      in: query
      name: token
      description: Short-lived API token obtained from getToken, passed as the `token` query parameter. Expires after ~24 hours.