---
title: "Create Or Update Alias"
method: POST
path: "/model_aliases/"
tags: ["Model Aliases"]
---

# Create Or Update Alias

`POST /model_aliases/`

## Request

- Base URL: `https://api.chutes.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.chutes.ai/model_aliases/`
- Auth: API key in header `Authorization`

## Headers

- `X-Chutes-Hotkey` string, nullable
- `X-Chutes-Signature` string, nullable
- `X-Chutes-Nonce` string, nullable
- `Authorization` string, nullable

## Request body

- ModelAliasCreate
  - `alias` string, required
  - `chute_ids` string[], required

## Response `201`

Successful Response

- string

## Other responses

- `422`: Validation Error

## Changes

- **2026-10-16** `23e8895b217d`: 3 breaking, 2 warning, 2 info
  - the response's body type changed from `object` to `string` for status `201`
  - removed the required property `alias` from the response with the `201` status
  - removed the required property `chute_ids` from the response with the `201` status
  - removed the optional property `created_at` from the response with the `201` status
  - …3 more
- **2026-08-26** `8d909638091e`: 1 info
  - endpoint added
- **2026-08-22** `05d9af05d87e`: 1 breaking
  - api path removed without deprecation

[Operation history](https://skmtc.dev/chutes/apis/chutes-api/changes/model_aliases/post.md)

---

[API](https://skmtc.dev/chutes/apis/chutes-api.md) - [All operations](https://skmtc.dev/chutes/apis/chutes-api/llms.txt) - [OpenAPI document](https://skmtc.dev/chutes/apis/chutes-api/revisions/8add5b0e22da?raw)