Kiro, the AWS coding assistant, replaced the three separate agent engines behind its editor, terminal and browser clients with a single shared one, now live across all four clients including a new iOS app. Custom agents, hooks and permissions use one configuration format everywhere, with permissions rewritten around the Cedar policy language. The web and iOS clients remain in preview, and the CLI version is early access.
What changed
Kiro's IDE, CLI and web clients each ran a separate agent with its own session format, tool set and permission syntax.
What it unlocks
Using the same custom agents, hooks and permission rules across Kiro's editor, terminal, browser and phone clients, with new agent features arriving in all of them at once.
- 4 clients on one harness
- 20+ agent-callable methods added
- Kiro IDE 1.0, CLI v3 early access
What you need to act on it
- Kiro IDE 1.0, or CLI v3 via kiro-cli --v3
- web and iOS clients in preview, iOS by early-access request
Sources