I recently wrote a slack bot that responds to action commands (like /ech yolo ) but I ran into some trouble finding exactly how to do this, so I’m documenting it here for other peeps to find. The exact error I hit was . /echo failed with the error "dispatch_failed" Is a great place to start, but what wasn’t clear to me was that the example describes events, not actions, which is what I’ll describe here. https://slack.dev/bolt-js/tutorial/getting-started You need to tell bolt that you want to listen for commands, not just events. Make sure your code explicitly says this because the example, at the time of writing this, doesn’t mention this: { App, LogLevel, ExpressReceiver } = ( ); app = App({ : process.env.SLACK_BOT_TOKEN, : LogLevel.DEBUG, : process.env.SLACK_SIGNING_SECRET, : { : , : }, }); app.command( , ({ command, ack, say }) => { ack(); say( ); }); app.error( { .error(error); }); { app.start(process.env.PORT || ); .log( ); })(); const require '@slack/bolt' const new token logLevel signingSecret endpoints events '/slack/events' commands '/slack/commands' // explicitly enable commands /* Add functionality here */ '/echo' async // Acknowledge command request await await ` ` ${command.text} ( ) => error // Check the details of the error to handle cases where you should retry sending a message or stop the app console ( ) => ( async // Start the app await 3000 console '⚡️ Bolt app is running!' You need to set your webhook server’s url, including the /slack/commands path, in your slack apps command request URL like so: If you would like a quick way to develop a slack app like this one locally check out my service it lets you put your local development environment on an internet accessible domain name with a single command, and it uses SSH so no signup or client download necessary. https://localhost.run, Try it with this app now by running ssh -R80:127.0.0.1:3000 localhost.run
