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The URL that you're making the POST request to should be the same URL you generated in the previous step. Just make an HTTP POST request like this: POST

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Later in this doc we'll explain how to make your messages more expressive or interactive, but for right now something simple will do, so we're going to use that old standby - 'Hello, world'.Īfter all this build up, you might think posting a message will be really complicated, but it's very simple. Use your Incoming Webhook URL to post a message Slack actively searches out and revokes leaked secrets. Don't share it online, including via public version control repositories. Let's see how you can actually use that webhook to post a message. We've kind of run out of cookies, but nice work anyway! That URL is your shiny new Incoming Webhook, one that's specific to a single user, and a single channel. You'll be sent back to your app settings, and you should now see a new entry under the Webhook URLs for Your Workspace section, with a Webhook URL that'll look something like this: If you need to add the Incoming Webhook to a private channel you must first be in that channel.

Go ahead and pick a channel that the app will post to, and then click to Authorize your app. We'll show how you can generate webhooks programmatically later, but for now you'll see something like the following screen:

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What this button does is trigger a shortcut version of the installation flow for Slack apps, one that is completely self-contained so that you don't have to actually build any code to generate an Incoming Webhook URL. One of those options will be a really helpful button marked Add New Webhook to Workspace, and you should click it. Now that Incoming Webhooks are enabled, the settings page should refresh and some extra options will appear. If you already have this activated, well you deserve another cookie 🍪. Enable Incoming WebhooksĪfter creating, you'll be redirected to the settings page for your new app (if you are using an existing app, just load its settings via your app's management dashboard).įrom here select the Incoming Webhooks feature, and click the Activate Incoming Webhooks toggle to switch it on. If you've already created one, you can use it too, also have a cookie 🍪. Pick a name, choose a workspace to associate your app with (bearing in mind that you'll probably be posting lots of test messages, so you might want to create a channel for sandbox use), and then click Create App. You won't get very far without doing this step, but luckily it's very simple, we even have a nice green button for you to click: Create a Slack app (if you don't have one already) We're going to walk through a really quick 4-step process (if you've already done some of these things it'll be even easier) that will have you posting messages using Incoming Webhooks in a few minutes: 1.

Generating Incoming Webhook URLs programmatically.

Post your message as a reply in a thread.

Use your Incoming Webhook to post a message.

If you're looking for the Help Center article on using webhooks with Workflow Builder, head over here.

You can use all the usual formatting and layout blocks with Incoming Webhooks to make the messages stand out. Creating an Incoming Webhook gives you a unique URL to which you send a JSON payload with the message text and some options. Incoming Webhooks are a simple way to post messages from apps into Slack.

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