POST /chat.postMessage

Sends a message to a channel.

Servers

https://slack.com/api

Request headers

Name	Type	Required	Description
`Content-Type`	String	Yes	The media type of the request body. Default value: "application/x-www-form-urlencoded"
`token`	String	Yes	Authentication token. Requires scope: `chat:write`

Request body fields

Name	Type	Required	Description
`username`	String	No	Set your bot's user name. Must be used in conjunction with `as_user` set to false, otherwise ignored. See authorship below.
`as_user`	String	No	Pass true to post the message as the authed user, instead of as a bot. Defaults to false. See authorship below.
`thread_ts`	String	No	Provide another message's `ts` value to make this message a reply. Avoid using a reply's `ts` value; use its parent instead.
`unfurl_media`	Boolean	No	Pass false to disable unfurling of media content.
`icon_emoji`	String	No	Emoji to use as the icon for this message. Overrides `icon_url`. Must be used in conjunction with `as_user` set to `false`, otherwise ignored. See authorship below.
`parse`	String	No	Change how messages are treated. Defaults to `none`. See below.
`mrkdwn`	Boolean	No	Disable Slack markup parsing by setting to `false`. Enabled by default.
`channel`	String	Yes	Channel, private group, or IM channel to send message to. Can be an encoded ID, or a name. See below for more details.
`reply_broadcast`	Boolean	No	Used in conjunction with `thread_ts` and indicates whether reply should be made visible to everyone in the channel or conversation. Defaults to `false`.
`text`	String	No	How this field works and whether it is required depends on other fields you use in your API call. See below for more detail.
`unfurl_links`	Boolean	No	Pass true to enable unfurling of primarily text-based content.
`attachments`	String	No	A JSON-based array of structured attachments, presented as a URL-encoded string.
`icon_url`	String	No	URL to an image to use as the icon for this message. Must be used in conjunction with `as_user` set to false, otherwise ignored. See authorship below.
`link_names`	Boolean	No	Find and link channel names and usernames.
`blocks`	String	No	A JSON-based array of structured blocks, presented as a URL-encoded string.

How to start integrating

Add HTTP Task to your workflow definition.
Search for the API you want to integrate with and click on the name.
- This loads the API reference documentation and prepares the Http request settings.
Click Test request to test run your request to the API and see the API's response.