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

# Add Message

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

Append a message to a chat session and bump session updated_at.

## Path parameters

- `session_id` string, uuid, required

## Request body

- RoutersChatMessageCreate
  - `content` string, required
  - `role` string, required

## Response `201`

Successful Response

- MessageResponse
  - `content` string, required
  - `created_at` string, date-time, required
  - `id` string, uuid, required
  - `role` string, required
  - `session_id` string, uuid, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.dev/agents-squads/apis/squads-api.md) · [All operations](https://skmtc.dev/agents-squads/apis/squads-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/agents-squads/squads-api/revisions/3812730a1cb4/schema)