---
title: "Post Node Message"
method: POST
path: "/api/agent-chat/nodes/{node_id}/messages"
tags: ["AgentChat"]
---

# Post Node Message

`POST /api/agent-chat/nodes/{node_id}/messages`

## Request

- Base URL: `https://api.qomplement.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.qomplement.com/api/agent-chat/nodes/{node_id}/messages`
- Auth: HTTP bearer

Send a chat message to the node's agent. Persisted on the runtime side.

## Path parameters

- `node_id` string, required

## Request body

- ChatMessageRequest
  - `message` string, required
  - `connectors` string[]
  - `inputs` object
  - `model` string, nullable
  - `workflow_id` string, nullable
  - `agent_name` string, nullable
  - `is_coordinator` boolean
  - `is_browser_agent` boolean
  - `is_erp_workspace_agent` boolean
  - `workspace_agent` object

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

## Changes

- **2026-09-09** `6fe617c112ef`: 1 info
  - endpoint added
- **2026-08-29** `7a7c8e2b5afc`: 1 breaking
  - api path removed without deprecation

[Operation history](https://skmtc.dev/qomplement/apis/qomplement-api/changes/api/agent-chat/nodes/:node_id/messages/post.md)

---

[API](https://skmtc.dev/qomplement/apis/qomplement-api.md) - [All operations](https://skmtc.dev/qomplement/apis/qomplement-api/llms.txt) - [OpenAPI document](https://skmtc.dev/qomplement/apis/qomplement-api/revisions/6fe617c112ef?raw)