---
title: "Download simulation time series parquet"
method: GET
path: "/simulations/{simulation_id}/time_series/download"
tags: ["Simulations"]
---

# Download simulation time series parquet

`GET /simulations/{simulation_id}/time_series/download`

Redirect to a short-lived signed URL for ``time_series.parquet``.

Most HTTP clients follow redirects automatically, so the caller receives
the parquet bytes transparently. Replaces the JSON ``/result`` endpoint
for time-series downloads. Pass ``redirect=false`` to get ``{"url": ...}``
instead — browsers must fetch the signed URL themselves (see
``_simulation_parquet_download``).

## Path parameters

- `simulation_id` string, uuid, required

## Query parameters

- `redirect` boolean

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

## Changes

- **2026-09-30** `ea3d377fec1a` — 1 breaking
  - for the `path` request parameter `simulation_id`, the format changed from no format to `uuid`
- **2026-09-25** `2a3fc9725f80` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/ionworks/apis/fastapi/changes/simulations/:simulation_id/time_series/download/get.md)

---

[API](https://skmtc.dev/ionworks/apis/fastapi.md) · [All operations](https://skmtc.dev/ionworks/apis/fastapi/llms.txt) · [OpenAPI document](https://skmtc.dev/ionworks/apis/fastapi/revisions/ea3d377fec1a?raw)