---
title: "Download a client's Drake fill CSV (System-B; feeds DrakeFiller.exe)"
method: GET
path: "/internal/api/tax-export/{client_id}/drake/fill-csv"
tags: ["Tax Export"]
---

# Download a client's Drake fill CSV (System-B; feeds DrakeFiller.exe)

`GET /internal/api/tax-export/{client_id}/drake/fill-csv`

## Request

- Base URL: `https://api.signalshq.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.signalshq.io/internal/api/tax-export/{client_id}/drake/fill-csv`
- Auth: OAuth 2
  - Password
  - Token URL: `/auth/login`

Build the resolved fill CSV and stream it as a download. Fail-closed: 409 if any row does not
resolve to a calibrated Drake control. Hand the CSV to DrakeFiller.exe on the preparer's machine.

## Path parameters

- `client_id` string, uuid, required: Client id

## Query parameters

- `tax_year` integer, required

## Response `200`

The self-describing fill CSV as a file download (text/csv).

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/signalshq/apis/signals-api.md) - [All operations](https://skmtc.dev/signalshq/apis/signals-api/llms.txt) - [OpenAPI document](https://skmtc.dev/signalshq/apis/signals-api/revisions/2c22af3b5576?raw)