cURL
curl -X DELETE https://invoice.horizonpay.co/api/v1/invoice-items/ii_Gk2Rw7Lq4Zt9Xn1Vb6Mc3Hs8 \
-H "Authorization: Bearer $INVOICE_AI_API_KEY"import InvoiceAI from '@horizonpay/invoice-ai'
const invoiceai = new InvoiceAI() // reads INVOICE_AI_API_KEY
const invoice = await invoiceai.invoiceItems.del('ii_Gk2Rw7Lq4Zt9Xn1Vb6Mc3Hs8')
console.log(invoice.total)from invoice_ai import InvoiceAI
client = InvoiceAI() # reads INVOICE_AI_API_KEY
invoice = client.invoice_items.delete("ii_Gk2Rw7Lq4Zt9Xn1Vb6Mc3Hs8")
print(invoice.total){
"data": {
"id": "in_Pb2Xk7Mv4Qs9Lr1Wd6Tn3Fh8",
"object": "invoice",
"number": null,
"status": "draft",
"customer": "cus_Nf3kQ8pR2mX7vB1cT9wL4sZ6",
"currency": "USD",
"collection_method": "send_invoice",
"issue_date": "2026-09-22",
"due_date": "2026-10-22",
"description": "Consulting retainer.",
"footer": null,
"subtotal": 2550000,
"discount": 0,
"taxable": 2550000,
"tax": 0,
"total": 2550000,
"amount_due": 0,
"amount_in_words": "Twenty Five Thousand Five Hundred USD Only",
"public_url_token": "2b7e4c1a-9f3d-4e68-8a5b-0d1c7f3e9a46",
"finalized_at": null,
"paid_at": null,
"voided_at": null,
"void_reason": null,
"created": "2026-09-22T09:30:00.000Z",
"updated": "2026-09-22T09:45:00.000Z",
"lines": {
"data": [
{
"id": "ii_Da4Vq9Ns2Kx7Bm3Yt8Rc1Lp6",
"object": "invoiceitem",
"price": "price_Jc5Tn8Wq1Ze6Ra3Ym9Ub2Gs7",
"product": "prod_Hy7Rq2Lm9Xc4Vb8Nt3Kd6Pw1",
"description": "Consulting retainer",
"quantity": 1,
"unit": "NOS",
"unit_amount": 2500000,
"amount": 2500000,
"discount_percent": 0,
"tax_rate": 0,
"tax_amount": 0
},
{
"id": "ii_Ew8Hz3Jc6Tq1Ms5Nv9Kb2Xr4",
"object": "invoiceitem",
"price": null,
"product": null,
"description": "Onboarding workshop",
"quantity": 1,
"unit": "NOS",
"unit_amount": 50000,
"amount": 50000,
"discount_percent": 0,
"tax_rate": 0,
"tax_amount": 0
}
]
}
}
}
Invoice items
Remove an invoice item
Removes a line from a draft and returns the recomputed invoice. A draft keeps at least one line, and finalized invoices are frozen — both 409. Pass invoice to speed up the lookup. Emits invoice.updated.
Scope: invoices:write + business:read
DELETE
/
invoice-items
/
{id}
cURL
curl -X DELETE https://invoice.horizonpay.co/api/v1/invoice-items/ii_Gk2Rw7Lq4Zt9Xn1Vb6Mc3Hs8 \
-H "Authorization: Bearer $INVOICE_AI_API_KEY"import InvoiceAI from '@horizonpay/invoice-ai'
const invoiceai = new InvoiceAI() // reads INVOICE_AI_API_KEY
const invoice = await invoiceai.invoiceItems.del('ii_Gk2Rw7Lq4Zt9Xn1Vb6Mc3Hs8')
console.log(invoice.total)from invoice_ai import InvoiceAI
client = InvoiceAI() # reads INVOICE_AI_API_KEY
invoice = client.invoice_items.delete("ii_Gk2Rw7Lq4Zt9Xn1Vb6Mc3Hs8")
print(invoice.total){
"data": {
"id": "in_Pb2Xk7Mv4Qs9Lr1Wd6Tn3Fh8",
"object": "invoice",
"number": null,
"status": "draft",
"customer": "cus_Nf3kQ8pR2mX7vB1cT9wL4sZ6",
"currency": "USD",
"collection_method": "send_invoice",
"issue_date": "2026-09-22",
"due_date": "2026-10-22",
"description": "Consulting retainer.",
"footer": null,
"subtotal": 2550000,
"discount": 0,
"taxable": 2550000,
"tax": 0,
"total": 2550000,
"amount_due": 0,
"amount_in_words": "Twenty Five Thousand Five Hundred USD Only",
"public_url_token": "2b7e4c1a-9f3d-4e68-8a5b-0d1c7f3e9a46",
"finalized_at": null,
"paid_at": null,
"voided_at": null,
"void_reason": null,
"created": "2026-09-22T09:30:00.000Z",
"updated": "2026-09-22T09:45:00.000Z",
"lines": {
"data": [
{
"id": "ii_Da4Vq9Ns2Kx7Bm3Yt8Rc1Lp6",
"object": "invoiceitem",
"price": "price_Jc5Tn8Wq1Ze6Ra3Ym9Ub2Gs7",
"product": "prod_Hy7Rq2Lm9Xc4Vb8Nt3Kd6Pw1",
"description": "Consulting retainer",
"quantity": 1,
"unit": "NOS",
"unit_amount": 2500000,
"amount": 2500000,
"discount_percent": 0,
"tax_rate": 0,
"tax_amount": 0
},
{
"id": "ii_Ew8Hz3Jc6Tq1Ms5Nv9Kb2Xr4",
"object": "invoiceitem",
"price": null,
"product": null,
"description": "Onboarding workshop",
"quantity": 1,
"unit": "NOS",
"unit_amount": 50000,
"amount": 50000,
"discount_percent": 0,
"tax_rate": 0,
"tax_amount": 0
}
]
}
}
}
Authorizations
An Invoice-AI API key sent as Authorization: Bearer inv_live_….
Create keys in Settings → API keys; the secret is shown once. Each key carries scopes, and every operation lists the scope it needs (x-required-scope):
business:read— Read your business profile, tax ID and bank detailsclients:read— List and read your clientsclients:write— Create, update and archive clientsproducts:read— List and read products and pricesproducts:write— Create, update and archive products and pricesinvoices:read— List and read invoices, including PDFsinvoices:write— Create, edit and delete draftsinvoices:finalize— Finalize invoices and void theminvoices:send— Email invoices to your clientspayments:write— Mark invoices as paidwebhooks:manage— Manage webhook endpoints
Keys cannot be created or revoked through the API, so a leaked key cannot mint more keys.
Path Parameters
The line, ii_… or UUID.
Example:
"ii_Gk2Rw7Lq4Zt9Xn1Vb6Mc3Hs8"
Query Parameters
The invoice the line belongs to, in_… or UUID. Speeds up the lookup.
Example:
"in_Pb2Xk7Mv4Qs9Lr1Wd6Tn3Fh8"
Response
The updated draft, without the removed line.
The updated draft.
Show child attributes
Show child attributes