Built-in functions BETA

Slack provides built-in functions you can use alongside your custom functions in a workflow. Built-in functions are essentially Slack-native actions, like creating a channel or sending a message, that work hand-in-hand with your functions.

Please note that some built-in functions may be restricted due to Workspace permission settings. Reach out to a Workspace owner if these aren’t available to you.

Using with workflows

Built-in functions need to be imported from the standard library built into the SDK — all built-in functions are children of the Schema.slack.functions object. Just like custom functions, built-ins are then added to steps in a workflow using the addStep method. That’s it!

Built-in functions define their own inputs and outputs, as detailed for each built-in below.

Here’s an example of a workflow that sends a message using the SendMessage built-in function:

    const { DefineWorkflow, Schema } = require('@slack/bolt');

...

SampleWorkflow.addStep(Schema.slack.functions.SendMessage, {
  channel_id: inputForm.outputs.fields.channel,
  message: greetingFunctionStep.outputs.greeting,
});

module.exports = { SampleWorkflow };

Read the full documentation for workflows to learn how to build out workflows.

Built-in functions list

You can view a full list of built-in functions here.

Next steps

Now that you’ve taken a dive into built-in functions, you can explore custom functions and what they have to offer. ✨