PicoClaw is a compact and highly efficient AI assistant engineered in Go to deliver powerful agent capabilities on extremely modest hardware. Designed to function on devices costing as little as $10, it consumes under 10MB of memory and achieves startup times of less than one second. Unlike many resource-heavy AI systems, PicoClaw prioritizes performance optimization and portability, running smoothly across RISC-V, ARM, and x86 architectures using a single binary. The project showcases an AI-bootstrapped development approach, where much of the core system was generated and refined through agent-driven processes. Users can deploy it through direct binary installation, source compilation, or Docker Compose for containerized environments. It connects seamlessly to popular messaging platforms including Telegram, Discord, QQ, DingTalk, and LINE, allowing users to interact with their assistant anywhere. PicoClaw includes structured workspace management for sessions, memory, scheduled jobs, and customizable skills. Security is enforced through sandboxed execution and restrictions that prevent dangerous commands or system-level damage. The assistant also supports periodic heartbeat tasks, asynchronous subagents, and cron-based scheduling for automation. Overall, PicoClaw delivers a scalable, low-cost AI agent framework suitable for personal assistants, smart devices, and lightweight server environments.