---
title: stack kb agent-builder post-chat-message cli command
description: Send a message and get the answer Behaviour flags: --dry-run — validate all inputs and exit without performing any action 
url: https://www.elastic.co/elastic/docs-builder/docs/4493/reference/elastic-cli/cli/stack/kb/agent-builder/post-chat-message
applies_to:
  - Elastic Cloud Serverless: Preview
  - Elastic Stack: Preview
---

# stack kb agent-builder post-chat-message cli command
<cli-modifiers>
</cli-modifiers>

```bash
elastic stack kb agent-builder post-chat-message --message <message> [options]
```

Send a message and get the answer
**Behaviour flags:**
`--dry-run` — validate all inputs and exit without performing any action

## Options

<definitions>
  <definition term="--message string required">
    The user message to send to the agent.
  </definition>
  <definition term="--agent-id string">
    The ID of the agent to send the message to. Defaults to the default Elastic AI agent.
  </definition>
  <definition term="--conversation-id string">
    The ID of an existing conversation to continue. Omit it to start a new conversation; the response carries the ID to reuse on the next call.
  </definition>
  <definition term="--input-file string">
    path to a JSON file to use as command input
  </definition>
  <definition term="--dry-run">
    validate all inputs and exit without performing any action (preview changes without applying them)
  </definition>
  <definition term="--no-validate">
    skip input validation and send the request as-is
  </definition>
</definitions>


## Global Options

<definitions>
  <definition term="--output-fields string">
    comma-separated list of fields to include in output (dot-notation supported)
  </definition>
  <definition term="--output-template string">
    Mustache-like template for custom text output (e.g. "{{id}}: {{name}}")
  </definition>
  <definition term="--json">
    output as JSON
  </definition>
</definitions>