Boo

v0.4.0 Breaking

This release includes 2 breaking changes for platform teams planning a safe upgrade.

Published 8d CLI & Terminal

✓ No known CVEs patched

✓ No known CVEs patched in this version

Topics

ai coding ghostty multiplexer screen cli

Affected surfaces

auth

ReleasePort's take

Light signal

editorial:auto 7d

Session names are now mandatory and the wait, send, and kill flags have been reworked in v0.4.0.

Why it matters: Affects CLI usage; any scripts using kitty must update to provide session names and adjust flag handling per the new API contract.

AI summary

Session names are now required and the wait, send, and kill flags have been changed.

Type	Severity	Summary	CVE
Breaking	High	Require session names and rework wait, send, and kill flags Require session names and rework wait, send, and kill flags Source: llm_adapter@2026-06-12 Confidence: low	—
Bugfix	Medium	Fix race condition in kitty detach integration test Fix race condition in kitty detach integration test Source: llm_adapter@2026-06-12 Confidence: high	—

Full changelog

Install: curl -fsSL https://raw.githubusercontent.com/coder/boo/main/install.sh | sh

fix(test): close echo race in the kitty detach integration test by @kylecarbs in https://github.com/coder/boo/pull/10
feat!: require session names and rework wait, send, and kill flags by @kylecarbs in https://github.com/coder/boo/pull/11

Full Changelog: https://github.com/coder/boo/compare/v0.3.0...v0.4.0

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About Boo

v0.2.0 Drops multi-window support and renames sessions after the current working directory.
v0.1.0 Renames project to boo and replaces flag CLI with subcommands