Maxio

aid: maxio
name: Maxio
description: >-
  Maxio is a SaaS billing and financial operations platform formed from the
  merger of Chargify and SaaSOptics, providing subscription management,
  recurring billing, revenue recognition, and SaaS metrics for B2B software
  companies. Maxio Advanced Billing (formerly Chargify) exposes a REST API for
  managing customers, subscriptions, products, components, invoices, and
  events. Authentication uses HTTP Basic auth with a per-site API key as the
  username.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
  - Billing
  - Subscriptions
  - Recurring Billing
  - Revenue Recognition
  - SaaS Metrics
  - Payments
url: >-
  https://raw.githubusercontent.com/api-evangelist/maxio/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.19'
apis:
  - aid: maxio:advanced-billing-api
    name: Maxio Advanced Billing API
    description: >-
      REST API for managing the full subscription lifecycle in Maxio Advanced
      Billing (formerly Chargify): customers, products, components,
      subscriptions, invoices, transactions, coupons, and webhooks.
      Authentication uses HTTP Basic with an API key as the username and 'x'
      as the password, scoped to a Maxio site subdomain.
    humanURL: https://developers.maxio.com/
    baseURL: https://{subdomain}.chargify.com
    tags:
      - Billing
      - Subscriptions
      - Invoices
      - Customers
      - Products
    properties:
      - type: Documentation
        url: https://developers.maxio.com/
      - type: Authentication
        url: https://developers.maxio.com/http/getting-started/authentication
      - type: APIReference
        url: https://developers.maxio.com/docs/api-docs/7b6ea12f39549-chargify-api
      - type: API Keys
        url: https://docs.maxio.com/hc/en-us/articles/24294819360525-Advanced-Billing-API-Keys

common:
  - type: LinkedIn
    url: https://www.linkedin.com/company/wearemaxio
  - type: Website
    url: https://www.maxio.com
  - type: Documentation
    url: https://developers.maxio.com/
  - type: Help Center
    url: https://docs.maxio.com/
  - type: GitHubOrganization
    url: https://github.com/maxio-com
  - type: SignUp
    url: https://www.maxio.com/get-started
  - type: Pricing
    url: https://www.maxio.com/pricing

  - type: LLMsTxt
    url: https://maxio.com/llms.txt
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com