Meme generator with human-in-the-loop approval

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Overview

This demo is a full stack example that uses the following:

• A Next.js app, with an endpoint for approving the generated memes
• Trigger.dev tasks to generate the images and orchestrate the waitpoint workflow
• OpenAI DALL-E 3 for generating the images
• A Slack app for the human-in-the-loop step, with the approval buttons linked to the endpoint

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GitHub repo

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Post to Slack

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Relevant code

• Meme generator task:

  • The memegenerator.ts task:
    • Generates two meme variants using DALL-E 3
    • Uses batchTriggerAndWait to generate multiple meme variants simultaneously (this is because you can only generate 1 image at a time with DALL-E 3)
    • Creates a waitpoint token
    • Sends the generated images with approval buttons to Slack for review
    • Handles the approval workflow

• Approval Endpoint:

  • The waitpoint approval handling is in page.tsx, which processes:
    • User selections from Slack buttons
    • Waitpoint completion with the chosen meme variant
    • Success/failure feedback to the approver

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Learn more

To learn more, take a look at the following resources:

• Waitpoint tokens - learn about waitpoint tokens in Trigger.dev and human-in-the-loop flows
• OpenAI DALL-E API - learn about the DALL-E image generation API
• Next.js Documentation - learn about Next.js features and API
• Slack Incoming Webhooks - learn about integrating with Slack