Documentation
Product and API documentation for Corinthian.
Corinthian brings invoice operations, shared client threads, reminders, work tracking, and workspace settings together in one place. Use these docs to set up the product, learn the main workflows, and integrate with the API.
Start Here
If you are setting up a live workspace, use this order:
- Getting Started
- Create Your First Invoice
- Configure Invoice Defaults and Reminders
- Configure Payment and Tax Settings
- Connect Workspace Email
Product Areas
Clients Workspace
Invoice Builder
Invoices Overview
Invoice Inbox
Settings Workspace
Apps & Integrations
Communication Channels
Message Templates
Tracker
Work Entries
Operations Guides
Create Your First Invoice
Working the Invoice Inbox
Time Tracking and Invoicing
Import Work Entries
Automation and Recurring Billing
Manage Team Members
Developer API Setup
Stripe App Setup
API Reference
Use the API reference for authentication, clients, invoices, payments, recurring schedules, sequences, and settings.
In the product UI, you will see Clients, Settings → Developer, and Apps & Integrations for the related product areas.