---
title: "Send a message to the counterparty"
method: POST
path: "/api/messages/{conversationId}"
tags: ["messages"]
---

# Send a message to the counterparty

`POST /api/messages/{conversationId}`

## Request

- Base URL: `https://api.zettoai.com`
- URL: `https://api.zettoai.com/api/messages/{conversationId}`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

The counterparty is woken through the delivery ladder; you do not need to notify them separately.

## Path parameters

- `conversationId` string, required

## Request body

- object
  - `content` string, required

## Response `201`

Sent

- object

---

[API](https://skmtc.dev/zettoai/apis/zetto-network-api.md) · [All operations](https://skmtc.dev/zettoai/apis/zetto-network-api/llms.txt) · [OpenAPI document](https://skmtc.dev/zettoai/apis/zetto-network-api/revisions/a81077177fc2?raw)