API and webhooks

The REST API gives you access to customers, products, invoices, bills, payments and the ledger.

Get an API key

1. Go to Settings → Developers → API keys.
2. Choose New key, name it and choose its permissions.
3. Copy the key — it's shown once.

curl https://api.flick.tools/v1/invoices \
  -H "Authorization: Bearer $FLICK_API_KEY"

Webhooks

Go to Settings → Developers → Webhooks and add an endpoint URL. Choose events such as invoice.sent, invoice.paid, einvoice.rejected or bill.posted. Every webhook is signed so you can verify it came from Flick.