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Day 3 OpenClaw Build: Silas WhatsApp Agent ($0.78)
Marshall built 'Silas', a WhatsApp-connected OpenClaw agent with OpenAI API, auto-content publishing, memory and skills — all for just $0.78 total spend after 3 days of building.
Setup Time
3 days
Monthly Cost
$1-5
Category
Development
Difficulty
beginner
The Build Journey
@mdnlabs documented his Day 3 of building with OpenClaw, creating an agent named 'Silas' that:
✅ Added $5 to OpenAI API
✅ Set up gpt-image-1-mini
✅ Talks via WhatsApp
✅ Has Carl's memory and custom skills
✅ Discovered auto-content publishing API
Total spend: $0.78
Key Challenges
The biggest problems were:
- Figuring out how to connect all the pieces together
- Getting WhatsApp integration working reliably
- Building persistent memory across sessions
Why It's Notable
This shows how accessible OpenClaw has become. A beginner can build a functional AI assistant with WhatsApp integration, persistent memory, and content publishing capabilities for less than $1.
Setup
- OpenClaw instance
- OpenAI API ($5 minimum)
- WhatsApp integration
- Always-on machine
Source
[Original post on X](https://x.com/mdnlabs)
Requirements
- OpenClaw or Clawdbot
- Always-on machine (Mac Mini, VPS, etc.)
- Claude API Key
Source
whatsappbeginnerlow-costbuild-in-publicsilas