API & integrations

Connect your ERP. Read your spend.

Groundley plugs into the systems you already use and reads your spend, line by line. Connect out of the box, or build on our REST API. Read-only, EU-hosted, secured with your own identity provider.

Out-of-the-box integrations

Connect the ERP you already run.

A lightweight, read-only connection. No IT project, no custom development. Your spend starts flowing in within a day.

Microsoft Dynamics 365 Finance & Operations
Microsoft Dynamics 365 Business Central
IFS Cloud
e-conomic
Visma
Fortnox
Your database
REST API
The REST API

Your spend data, on tap.

Everything Groundley reads and categorises is available over a clean REST API: invoices and invoice lines, the spend category tree, suppliers, and the emissions that come with them. Authenticate with a bearer token, page through the data, and subscribe to webhooks for anything new.

Browse the full API reference Talk to us about API access
api.groundley.com / v1
# read your invoice lines
GET /v1/invoice-lines?year=2025
Authorization: Bearer <token>

# response
{
  "total": 746848,
  "lines": [{
    "supplier": "Socar",
    "amount": 2856.57,
    "category": "Fuel / Bunker",
    "scope3_kgco2e": 812.4
  }]
}
What you can build

Pull your spend

Invoices, invoice lines, the Level 1-3 category tree, suppliers and buyers, all queryable.

Pull your emissions

The spend-based carbon footprint that comes with each line, ready for your own reporting.

Subscribe to webhooks

Get notified as new spend is read and categorised, so your systems stay in sync.

Secured the way your data deserves.

Read-only access, EU hosting, encryption in transit and at rest, and your own identity provider. See exactly how on our security page.

Talk to us about the API →