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Adding Share Functionality

Prompt users to share during key accomplishment moments using MiniKit’s compose hook.
ComposeCastButton.tsx
import { useComposeCast } from '@coinbase/onchainkit/minikit';

export default function ComposeCastButton() {
  const { composeCast } = useComposeCast();

  const handleCompose = () => {
    composeCast({ text: 'Just minted an awesome NFT using @coinbase OnchainKit!' });
  };

  const handleComposeWithEmbed = () => {
    composeCast({
      text: 'Check out this amazing Mini App!',
      embeds: ['https://your-mini-app-url.com'],
    });
  };

  return (
    <div>
      <button onClick={handleCompose}>Share Achievement</button>
      <button onClick={handleComposeWithEmbed}>Share Frame</button>
    </div>
  );
}
Strategic sharing moments include: post‑achievement, post‑mint, after beating a challenge, or reaching milestones.

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View Casts and Profiles

Link users into casts and profiles directly from your app via MiniKit hooks.

useViewCast

useViewProfile

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Best Practices

  • Encourage meaningful, contextual shares
  • Avoid spammy prompts; tie sharing to value
  • Make shared previews visually consistent with your UI
Further reading: