Developers
API documentation
Build on top of Marchant. The REST API is live today for contacts, invoices and expenses, with more resources on the way.
Full API docs are on their way
We're preparing comprehensive API documentation including authentication guides, endpoint references and code examples in JavaScript, Python and PHP. Register your interest to be notified when they're ready.
Be first to know when the API ships
Leave your email and we'll notify you when the docs and sandbox go live — plus monthly product updates.
What the API will cover
Contacts, invoices and expenses are available today. The rest is on the roadmap.
Invoices & Quotes
Create, update, send and retrieve invoices and quotes programmatically.
Expenses & Receipts
Submit expenses, attach receipts and query categorised spend.
Banking & Transactions
Read bank transactions, balances and reconciliation status.
Reports & Analytics
Pull P&L, VAT summaries and cash flow data into your own dashboards.
Tax Filings
Query MTD, TVA and ELSTER submission status for your clients.
Contacts & Clients
Manage your client and supplier directory via API.
API access is included in Premium, Business and Enterprise
Full REST API access is available on the Premium, Business and Enterprise plans. Start a free trial on one of those plans to explore the API sandbox — 30-day trial, no credit card required.