🧠 How to build an AI agent without coding

The easiest and fastest way to build an AI agent

AI agents are everywhere—but most people still don’t know what they actually do or how to build one.

So I built a simple, no-code AI agent that reads my Slack threads and sends me a daily summary email. It took under 30 minutes to set up and now saves me hours every week.

If you’ve been curious about AI agents but haven’t found a clear starting point, this is it. Here’s how it works. šŸ‘‡

āœ… The Complete AI Agent Setup Workflow

To set up your AI agent, we’ll use Zapier, a no-code automation platform that lets you connect your favorite apps and create powerful AI workflows.

šŸ¤– Step 1: Access the AI Agent Feature

  • On the Zapier dashboard, look at the left-hand menu.

  • Click on ā€œAgentsā€ (note: this feature is currently in beta).

  • Select ā€œCreate Custom Agentā€.

  • Give your agent a meaningful name—ideally something you can use long-term.

    Click Agents to get started

šŸ–„ļø Step 2: Explore the Agent Interface

  • Once the agent is created, you'll see its interface.

  • This displays all the behaviors (including those from previous agents, if any).

  • You can always return to check the agent’s activity and progress.

Zapier: create your own custom agent

ā–¶ļø Step 3: Create a New Behavior

  • Click on ā€œRun Behaviorā€ and then ā€œCreate Behaviorā€.

  • This is where you define what the agent should do and which tools it will use to make the magic happen.

šŸŽ®ļø Step 4: Add a Trigger

  • Click ā€œAdd Triggerā€ and choose an app to start the workflow.

  • For this example, select Slack.

  • Set the trigger to ā€œReaction Addedā€ā€”this means when you react to a Slack message, the agent will begin its job.

šŸ› ļø Step 5: Define the Behavior

  • Next, provide clear instructions to the agent.

  • For example:
    ā€œWhen I react to the Slack thread, please summarize all the important info I need to know and any action items from the thread.ā€

    Giving Instructions to the custom agent

šŸ”„ Step 6: Insert Tools to Enable Action

Now we tell the agent how to complete the task:

  1. Click ā€œInsert Toolā€ and search for Slack.

  2. Choose ā€œRetrieve Thread Messagesā€ – this lets the agent pull the full thread details.

  3. Click ā€œInsert Toolā€ again and select Gmail.

  4. Choose ā€œSend Emailā€ as the action.

  • For the thread timestamp, you can either manually set it or let the agent generate the value automatically.

  • Enter the desired recipient email address.

Insert the required tools and information

🧪 Step 7: Save and Test

  • Click ā€œSaveā€ to lock in your workflow.

  • Then hit ā€œTest Behaviorā€ to see it in action.

  • If everything is set up correctly, reacting to a Slack thread will trigger your AI agent to send a summary email with key points and action items.

šŸŽ‰ That’s it!

You’ve just built a fully functional AI agent without writing a single line of code. It’s a simple example, but the principles remain the same:

  •  ā†’ Connect your apps

  • → Define behavior

  • → Let the agent do the work.

šŸ†Grab the Challenge & Get Rewarded!

Ready to put your creativity to work? šŸ’Ŗ 

Create your own unique AI agent using the same steps, whether it’s for automating reports, managing your calendar, organizing your notes, or anything else that makes your life easier.

šŸŽ Bonus: Get 1 Month Free on Prompt Genie!

Write to us with:

  • What kind of AI agent you built

  • How it changed your workflow or life

The best submissions will receive one month of Prompt Genie Pro – absolutely free. šŸŽ‰ 

Let your AI agent do the work, and let your story inspire others! 🌟 

šŸ‘€ ICYMI

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