Kiro

Kiro 0.9 introduces custom subagents that let developers create specialized agents for different parts of their codebase (like separate frontend and backend agents), reducing context window bloat. Enterprise admins gain new governance controls including custom extension registries and web tools toggles. The release adds support for Agent Skills, modular instruction packages that load on-demand based on the agentskills.io standard. New refactoring tools expose IDE language server capabilities directly to agents, enabling more reliable symbol renaming and file moving with automatic cascading updates across the codebase.

Kiro 0.9: Custom subagents in the IDE, new enterprise controls, and granular code review

Custom subagents: build your own specialists

Enterprise teams get more controls and flexibility

Agent skills: modular instructions that load when you need them