---
title: "Add an ad-hoc line item to a draft invoice"
method: POST
path: "/v1/invoices/{id}/line-items"
tags: ["Invoices"]
---

# Add an ad-hoc line item to a draft invoice

`POST /v1/invoices/{id}/line-items`

Append a one-off line item (setup fee, services rendered, manual adjustment) to a DRAFT invoice. Only allowed on DRAFT invoices — once issued, line items are immutable; use credit notes for corrections.

## Path parameters

- `id` string, required

## Response `200`

Default Response

---

[API](https://skmtc.net/usedrip/apis/drip-api.md) · [All operations](https://skmtc.net/usedrip/apis/drip-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/usedrip/drip-api/revisions/2cb1567969ca/schema)