---
title: "Set Model Head"
method: PUT
path: "/v2/models/{model_id}/head"
tags: ["models"]
---

# Set Model Head

`PUT /v2/models/{model_id}/head`

Point the model's active checkpoint (head) at one of its checkpoint nodes.

## Path parameters

- `model_id` string, uuid, required

## Request body

- SetHeadRequest — Point a trainable model's active checkpoint (head) at one of its nodes.
  - `checkpoint_id` string, uuid, required

## Response `200`

Successful Response

- ModelResponse
  - `id` string, uuid, required
  - `model_name` string, required
  - `name` string, nullable
  - `provider` ProviderResponse
    - `id` integer, required
    - `name` string, required
    - `api_base` string, nullable
    - `supported_routes` string[]
    - `icon_url` string, nullable
    - `metadata` object
  - `routes` string[]
  - `is_beta` boolean
  - `hidden` boolean
  - `is_trainable` boolean
  - `public` boolean
  - `checkpoint_count` integer, nullable
  - `inference_count` integer
  - `fork_of_model_id` string, uuid, nullable
  - `fork_of_model_name` string, nullable
  - `context_window` integer, nullable
  - `sdk_agent_type` string, required
  - `input_cost_per_token` number, nullable
  - `output_cost_per_token` number, nullable
  - `pricing_config` object
  - `request_defaults` object
  - `metadata` object
  - `created_at` string, date-time, required
  - `released_at` string, date-time, nullable — Vendor-published release time. Null until an admin sets it; not catalog insert time.
  - `can_edit` boolean

## Other responses

- `400` — Invalid or malformed request
- `401` — Missing or invalid credentials
- `403` — Caller may not access this resource
- `404` — Referenced entity does not exist
- `409` — Resource already exists
- `422` — Validation Error

---

[API](https://skmtc.dev/hud/apis/hud-platform.md) · [All operations](https://skmtc.dev/hud/apis/hud-platform/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/hud/hud-platform/revisions/58558fc733d9/schema)