Agents That Write Their Own Tools at Runtime — Sandhya Subramani, AWS
Strand Agents, an open-source framework from AWS, demonstrates agents that write, fix, and extend their own tools and sub-agents at runtime — without redeploying code. The critical enabler is a small set of three primitive tools (editor, shell, load) plus a system prompt defining a tool template, which together let an agent dynamically generate and load new capabilities. This pattern takes meta-tooling from a party trick to a practical mechanism for self-healing production systems, but introduces serious safety requirements around sandboxing, permissions, and eval.