Accounting API

Transactions

Create and manage e-commerce transactions including cost estimation, transaction creation with full customer/product/shipping details, finalisation with payment processing, subscription and instalment creation, coupon validation, and transaction restart. Supports both existing and new customers, multiple products with variants and packs, custom fields, shipping configuration (Tamio and nShift), and fulfillment automation options.

Authentication

All API requests require a valid API key passed via the Authorization header using the Bearer scheme:

Authorization: Bearer YOUR_API_KEY

You can generate and manage your API keys from the Tamio Dashboard under Settings > Developers > API Keys.

Endpoints

POST /transactions/create Create a transaction POST /transactions/estimate Estimate transaction costs POST /transactions/finalise/{uuid} Finalise a transaction POST /transactions/restart/{uuid} Restart a transaction POST /transactions/validate-coupons Validate coupon codes