Integrations (Zapier / Make / scripts)

Inkvoice exposes its full REST API to external tools through API tokens and polling endpoints. This page covers the end-to-end workflow for connecting an automation platform such as Zapier or Make, or your own scripts.

1. Generate an API token

In the app, go to Settings → API → Generate token. Give it a name (e.g. Zapier) and either:

• leave Full access checked — the token can do anything your account can; or
• uncheck it and pick specific scopes (per resource: read and/or write).

The token is displayed once, in the form ink_…. Copy it immediately — it is stored only as a hash and cannot be retrieved again. If you lose it, revoke it and generate a new one.

2. Authenticate requests

Send the token in the Authorization header on every request:

curl https://your-inkvoice.example.com/api/v1/invoices \
  -H "Authorization: Bearer ink_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

That's the only difference from a normal session — every endpoint documented in this API reference works the same way with a token.

3. Scopes

Scoped tokens are restricted to an allow-list of resource:action pairs. The available resources are invoices, customers, quotes, products, and expenses; the actions are read and write (write implies read on the same resource).

Request	Required scope
GET /api/v1/invoices	invoices:read
POST /api/v1/invoices	invoices:write
GET /api/v1/customers	customers:read

A scoped token that hits a resource it wasn't granted — or a non-integration area such as settings or users — receives 403 Forbidden. A full-access token (created with no scopes) is not restricted.

4. Polling for changes (updated_since)

For "new or updated record" triggers, poll the list endpoints with an updated_since query parameter. It returns only rows whose updated_at is at or after the given ISO-8601 timestamp:

GET /api/v1/invoices?updated_since=2026-06-08T00:00:00Z
GET /api/v1/customers?updated_since=2026-06-08T00:00:00Z
GET /api/v1/quotes?updated_since=2026-06-08T00:00:00Z

Typical polling loop:

1. Store the timestamp of your last successful poll.
2. Request ?updated_since=<last_poll>.
3. Process the returned records (dedupe by id — a record may appear again if it changes within the same second).
4. Save the new poll time and repeat.

updated_since combines with the other list filters (status, customer_id, page, limit, …) documented on each resource page.

5. Revoking a token

In Settings → API, use the trash icon next to a token to revoke it. Any integration using that token stops working immediately. Revocation is permanent.

Webhooks (push instead of poll)

If you'd rather be notified than poll, Inkvoice can also push events (invoice.paid, invoice.sent, …) to an outgoing webhook URL. Configure these under Settings → Email → Outgoing webhooks.