---
title: "Add Chat Message"
method: POST
path: "/chat/sessions/{session_id}/messages"
tags: ["chat"]
---

# Add Chat Message

`POST /chat/sessions/{session_id}/messages`

## Path parameters

- `session_id` string, uuid, required

## Request body

- MessageCreate
  - `role` string
  - `content` string, required

## Response `200`

Successful Response

- Message
  - `role` string, required
  - `content` string, required
  - `id` string, uuid, required
  - `chat_id` string, uuid, required
  - `timestamp` string, date-time, required
  - `edited` boolean
  - `edited_at` string, date-time, nullable
  - `prev_id` string, uuid, nullable
  - `option` boolean, nullable

## Other responses

- `404` — Not found
- `422` — Validation Error

---

[API](https://skmtc.net/meganova/apis/fastapi.md) · [All operations](https://skmtc.net/meganova/apis/fastapi/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/meganova/fastapi/revisions/2b2bab8b9017/schema)