Holded API vs Trullion Revenue Assurance

Holded API lets businesses manage invoices, contacts, products, and other business data programmatically. The REST/JSON API uses Bearer authentication and cursor pagination, and its documentation lists 356 endpoints across accounting, treasury, sales, inventory, contacts, CRM, projects, team and HR, calendar, inbox, and webhooks. API keys can have scoped permissions and must be sent over HTTPS. Webhooks deliver signed HTTP POST notices for events such as invoice creation and payment receipt, with retries after unsuccessful delivery. Monthly API quotas range from 500 calls on Plus to 100,000 or more on Premium; Premium overage is billed automatically. Holded lists integrations with Shopify, WooCommerce, PrestaShop, Stripe, PayPal, Google Drive, Zapier, and Make. The wider cloud business platform combines invoicing, accounting, CRM, projects, HR, inventory, and banking. Plus costs €15 a month, excluding VAT, and a 14-day trial is available. Holded is based in Barcelona, Spain, and was founded in 2016.

Trullion Revenue Assurance has no write-up on Specifiction yet; its figures are above.