new TUI prints raw <tool_use> XML when model returns inline tool calls; classic renders correctly

[thomasstovicek-bot]

Checks

• I have searched github.com/aws/amazon-q-developer-cli/issues and there are no duplicates of my issue
• I have run q doctor in the affected terminal session
• I have run q restart and replicated the issue again

Operating system

macOS 26.5.0 (25F71)

Expected behaviour

tool call successful:

 kiro-cli --classic
To learn more about MCP safety, see https://kiro.dev/docs/cli/mcp/security/

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⠀⠀⠀⠀⠀⠀⠀    ⢸⣿⠀⠀⠀⠀⠀⠀⠀⠀⠹⣷⡀⠀⠀⠀⠀⢸⣿⠀⠀⠀⠀⣿⡇⢸⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣼⠟⠀⢸⣿⠀⠀⠀⢸⣿⠀⠀⠀⠀⠀⣿⡇⠀⠀⠀⣿⡇
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Jump into building with Kiro:

1. Ask a question or describe a task
2. Use /context add <file> to provide Kiro with additional info
3. Connect to external tools with by using /mcp

Use /help for more information and happy coding!

Model: auto (/model to change) | Plan: KIRO POWER (/usage for more detail)


1% > what is my ip?

I will run the following command: curl -s ifconfig.me (using tool: shell)
Purpose: Get public IP address


Allow this action? Use 't' to trust (always allow) the 'shell' tool for the session. [y/n/t]:

1% > t
xxxx:xxxx:xxxx:xxxx::x:xxxx - Completed in 0.674s

> Your public IP address is xxxx:xxxx:xxxx:xxxx::x:xxxx

Actual behaviour

kiro-cli

Welcome to Kiro CLI, let's get you signed in!

Press enter to continue to the browser or esc to cancel


Device authorized

Logged in successfully

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                                                                                          ⢸⣿⠀⠀⠀⠀⣿⡿⠋⠀⠀  ⢀⣾⡿⠁  ⢸⣿⠀⠀⠀⠀⣿⡇ ⢸⣿⠀⠀⠀⢸⣿⠉⠉⠉⣿⡇   ⣿⡇  ⣼⡟⠀⠀ ⣰⡿⠟⠛⠻⢿⣆⠀⠀ ⢻⣧
                                                                                          ⢸⣿⠀⠀⠀⠀⠙⠁⠀⠀ ⢀⣼⡟⠁    ⢸⣿⠀⠀⠀⠀⣿⡇ ⢸⣿⠀⠀⠀⢸⣿⣶⣶⡶⠋⠀   ⣿⠇ ⢰⣿⠀⠀⠀⢰⣿⠀⠀⠀  ⣿⡆⠀⠀ ⣿⡆
                                                                                          ⢸⣿⠀⠀⠀⠀⠀⠀⠀⠀ ⠹⣷⡀     ⢸⣿⠀⠀⠀⠀⣿⡇⠀⢸⣿⠀⠀⠀⠀⠀⠀⠀⠀   ⣠⣼⠟  ⢸⣿⠀⠀ ⢸⣿⠀⠀⠀⠀ ⣿⡇⠀⠀ ⣿⡇
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                                                                                          ⢸⣿⠀⠀⠀⠀⣾⡟⣷⡀⠀⠀ ⠘⣿⣆   ⢸⣿⠀⠀⠀⠀⣿⡇ ⢸⣿⠀⠀⠀⠀⣿⡟⣷⡀⠀⠀ ⠘⣿⣆   ⢻⣧⠀⠀ ⠹⣷⣦⣤⣤⣾⠏⠀⠀⠀⣼⡟
                                                                                          ⢸⣿⠀⠀⠀⠀⣿⡇⠹⣷⡀  ⠀⠈⢻⡇  ⢸⣿⠀⠀⠀⠀⣿⡇ ⢸⣿⠀⠀⠀⠀⣿⡇⠹⣷⡀  ⠀⠈⢻⡇   ⢻⣧⠀⠀⠀ ⠉⠉⠉    ⣼⡟
                                                                                          ⠸⣿⣄⡀⢀⣠⣿⠇⠀⠙⣷⡀  ⢀⣼⠇  ⠸⣿⣄⡀⢀⣠⣿⠇ ⠸⣿⣄⡀⢀⣠⣿⠇⠀⠙⣷⡀  ⢀⣼⠇    ⠻⣷⣦⣄⡀   ⢀⣠⣴⣾⠟
                                                                                           ⠈⠻⠿⠿⠟⠁⠀⠀⠀⠈⠻⠿⠿⠟⠁    ⠈⠻⠿⠿⠟⠁   ⠈⠻⠿⠿⠟⠁⠀⠀⠀⠈⠻⠿⠿⠟⠁     ⠀⠀⠈⠙⠻⠿⠿⠿⠿⠟⠋⠁

                                                                                     Welcome to the new Kiro CLI UX! /tui to learn more, /feedback for thoughts.
                                                                                          Prefer the classic experience? Relaunch with kiro-cli --classic.
────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
  what is my ip?
   
  <tool_use>
  {"name": "execute_command", "arguments": {"command": "curl -s ifconfig.me"}}
  </tool_use>

▸ Credits: 0.01 • Time: 2s

Steps to reproduce

1. Launch the default UI: kiro-cli
2. Prompt: what is my ip?
3. Observe the response is rendered as raw text:

<tool_use>
{"name": "execute_command", "arguments": {"command": "curl -s ifconfig.me"}}
</tool_use>

No tool prompt, no execution. Credits are charged for the round-trip.
4. Quit and relaunch with the classic UI: kiro-cli --classic
5. Same prompt: classic UI translates the call correctly:

I will run the following command: curl -s ifconfig.me (using tool: shell)
Purpose: Get public IP address
Allow this action? Use 't' to trust ... [y/n/t]:

Approving runs the tool and returns the IP normally.

Environment

<This will be visible to anyone. Do not include personal or sensitive information>

[q-details]
version = "2.4.0"
hash = "da457ad7e4bc0693d1f094f7571fb87091a0e406"
date = "2026-05-20T19:18:35.988733Z (1d ago)"
variant = "full"

[system-info]
os = "macOS 26.5.0 (25F71)"
chip = "Apple M2 Pro"
total-cores = 12
memory = "16.00 GB"

[environment]
cwd = "/Users/USER/repos"
cli-path = "/Users/USER/repos"
os = "Mac"
shell-path = "/bin/zsh"
shell-version = "5.9"
install-method = "unknown"

[env-vars]
PATH = "/.local/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/usr/local/MacGPG2/bin:/Applications/VMware Fusion.app/Contents/Public:/usr/local/share/dotnet"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "2.3.0"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
ZDOTDIR = "/Users/USER"
__CFBundleIdentifier = "dev.kiro.desktop"