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