---
title: "Create a prompt version checkpoint"
method: POST
path: "/v3/ai-agents/{agent_id}/prompt-versions"
tags: ["v3", "prompt-versions"]
---

# Create a prompt version checkpoint

`POST /v3/ai-agents/{agent_id}/prompt-versions`

## Request

- Base URL: `https://api.mentium.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.mentium.io/v3/ai-agents/{agent_id}/prompt-versions`
- Auth: HTTP bearer

## Path parameters

- `agent_id` string, uuid, required

## Headers

- `mentium-workspace-id` string, nullable

## Request body

- PromptVersionCreate
  - `prompt_type` 'system' | 'user', required
  - `prompt_content` string, required
  - `source_feedback_ids` string[]

## Response `201`

Successful Response

- PromptVersionResponse
  - `id` string, required
  - `agent_id` string, required
  - `prompt_type` string, required
  - `prompt_content` string, required
  - `source_feedback_ids` string[], required
  - `created_at` string, date-time, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/mentium/apis/mentium-api.md) - [All operations](https://skmtc.dev/mentium/apis/mentium-api/llms.txt) - [OpenAPI document](https://skmtc.dev/mentium/apis/mentium-api/revisions/b4ed8e59432e?raw)