---
title: "Send Message"
method: POST
path: "/v1/chat/sessions/{session_id}/messages"
tags: ["assistant"]
---

# Send Message

`POST /v1/chat/sessions/{session_id}/messages`

## Request

- Base URL: `https://api.actuato.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.actuato.com/v1/chat/sessions/{session_id}/messages`
- Auth: none declared

Send a message (and optional photos). Streams server-sent events until `done`.

## Path parameters

- `session_id` string, uuid, required

## Query parameters

- `cheap` boolean

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/actuato/apis/actuator-api.md) · [All operations](https://skmtc.dev/actuato/apis/actuator-api/llms.txt) · [OpenAPI document](https://skmtc.dev/actuato/apis/actuator-api/revisions/67a742c2308b?raw)