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Draft messages, fill web forms and prototype sites by chat

The author messages an OpenClaw agent on WhatsApp to draft messages, fill forms in a browser, and research a topic then build and host an HTML prototype.

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Time saved
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Setup time
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Running cost
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Cost range
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Use case overview

The author messages an OpenClaw agent on WhatsApp to draft messages, fill forms in a browser, and research a topic then build and host an HTML prototype.

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Reported experience

  1. What they did

    Aman Khan runs OpenClaw on a separate machine and messages it on WhatsApp, including voice notes. He connected an Obsidian vault, browser control and web search through a Brave plugin. He asks it to draft messages from his notes, fill forms, and research a topic, then build an HTML site and host it on surge.

  2. How it went

    He built a mobile-app prototype for Arize this way, through some back and forth. The post gives no success rates or timings for drafting or form filling.

  3. Worth knowing

    He reports costs of roughly $10-15/day on Opus, with spikes above $30. Sonnet is much cheaper, and an agent with browser access needs prompt-injection rules.

Example prompts

Try with OpenClaw
I'll message you from [WhatsApp or chat app] with small tasks. First, draft a reply to [person] about [topic] in my usual tone and show it to me without sending. Second, fill out the form at [URL] with the details I give you and stop before submitting so I can review. Third, research [topic], build a one-page HTML prototype from it, and give me the hosted link.

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