You might have heard of OpenClaw — the open-source AI assistant running on everything from WhatsApp to a Raspberry Pi, mass adoption, mass controversy. What powers it is a tiny agent called Pi, built by Mario Zechner with a philosophy I haven’t seen elsewhere: “if I don’t need it, it won’t be built.” The result? Four tools. A system prompt under 1,000 tokens. No MCP. No plugin ecosystem. It’s YAGNI applied to agent architecture.
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